JP2014219243A - Circuit substrate inspection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To correctly position and attach a pin board to a movable plate.SOLUTION: In making a first guide hole 12 on a movable plate 10 side matched to a second guide hole 22 on a pin board 20 side and positioning the pin board 20 to the movable plate 10 by inserting a positioning pin 30, a lift-up part 41 is provided that holds the positioning pin 30 in a state where the positioning pin 30 has a tip side lifted on a tip side above the movable plate 10 and gets out of the second hole 22, and a slide arm 40 is disposed that is pressed by the pin board 20 to be inserted to a holding part 11 of the movable plate 10 and is retreated. Accompanied by inserting the pin board 20 to the holding part 11 of the movable plate 10 and moving the pin board 20, the slide arm 40 is retreated and then, the lift-up part 41 is gotten out of the positioning pin 30, the positioning pin 30 is configured so as to be inserted between the guide holes 12 and 22 by a compression coil spring 33.

Description

  The present invention relates to a circuit board inspection apparatus having a pin board in which a test probe that comes into contact with a circuit board to be inspected is implanted. More specifically, the pin board can be easily positioned with respect to the circuit board to be inspected. The present invention relates to a circuit board inspection apparatus which can be used.

  As a circuit board inspection device such as an in-circuit tester or a bare board tester, a large number of test probes are implanted on the pin board, and the test probes are simultaneously brought into contact with the inspection points of the circuit board to be inspected. There is a pin board type circuit board inspection device that performs impedance measurement and the like.

  In addition to this, there is a flying type circuit board inspection apparatus that moves a predetermined number of test probes in the X, Y, and Z directions to contact the inspection point of the circuit board to be inspected. According to the above, since the pin board to which a large number of test probes are attached can be brought into contact with the circuit board to be inspected via the predetermined lifting means, it is possible to perform a multipoint inspection at a time.

  However, on the other hand, in order to increase the reliability of the inspection, it is necessary to accurately position the pin board with respect to a pin board holding portion called a press board or the like driven by the lifting means.

  5 and 6 show an example of a conventional circuit board inspection apparatus. This conventional circuit board inspection apparatus is arranged so as to contact a base 1 on which a circuit board D to be inspected is placed and a terminal portion of an electronic component E mounted on the circuit board D to be inspected, for example. And a pin board 3 to which the test probe 2 is attached.

  In this conventional circuit board inspection apparatus, the circuit board D to be inspected is a single-sided mounting board, but the illustration is omitted when the circuit board D to be inspected is a double-sided mounting board. The pin board 3 is also provided on the lower surface side of the base 1.

  The pin board 3 is attached to a movable plate 4 that is driven by driving means such as an air cylinder (not shown) so that the pin board 3 can be moved up and down with respect to the base 1.

  On the lower surface side (base 1 side) of the movable plate 4, a pair of guide rails 5 having a substantially L-shaped cross section that holds two opposing side edge portions of the pin board 3 slidably as pinboard holding portions. , 5 is provided, and the pin board 3 is held movably along the movable plate 4 via the guide rails 5, 5. The pin board 3 and the movable plate 4 are connected to the pin board 3. Positioning means for positioning the movable plate 4 at a predetermined position is provided.

  In this conventional apparatus, the positioning means includes two guide holes 6 and 6 provided on one end side of the pin board 3 (front side in FIG. 5) and one end side of the movable plate 4 (front side in FIG. 5). And two positioning pins 8 and 8 inserted into the guide holes 6 and 7, respectively.

  Further, on the other end side of the movable plate 4, the movement of the pin board 3 is restricted at a position where the two guide holes 6, 6 of the pin board 3 and the two guide holes 7, 7 of the movable plate 4 overlap. The stopper wall 9 is provided.

  With reference to FIG. 6, the operation example which positions and attaches the pin board 3 to the movable plate 4 is demonstrated. First, the side edge of the pin board 3 is inserted between the pair of guide rails 5, 5 of the movable plate 4, and the pin board 3 is moved to a position where it contacts the stopper wall 9 (FIG. 6; arrow A direction).

  When the other end side of the pin board 3 abuts against the stopper wall 9 and the guide hole 6 of the pin board 3 and the guide hole 7 of the movable plate 4 are overlapped and matched, the positioning pin 8 is moved to the upper surface side of the movable plate 4. Into the guide holes 7 and 6 (FIG. 6; arrow B direction).

  Thus, after the pin board 3 is attached to the movable plate 4 and the pin board 3 is positioned at an appropriate position with respect to the circuit board D to be inspected on the base 1, the movable plate is moved by an elevating means such as an air cylinder (not shown). 4 is lowered (FIG. 6; arrow C direction), and the test probe 2 is brought into contact with a predetermined inspection point on the circuit board D to be inspected.

  Further, in order to remove the pin board 3 from the movable plate 4 after the inspection is completed, the positioning pin 8 is extracted from the guide hole 7 of the movable plate 4 and the guide hole 6 of the pin board 3 and is moved along the guide rails 5 and 5. What is necessary is just to move the board 3 to the opposite arrow A direction.

  According to the conventional circuit board inspection apparatus, the pin board 3 is moved to the position regulated by the stopper wall 9 via the guide rails 5 and 5 of the movable plate 4, and the positioning pin 8 is moved to the guide hole 7 of the movable plate 4. The pin board 3 can be positioned at an appropriate position with respect to the base 1 and held on the movable plate 4 by a simple operation of inserting the pin board 3 into the guide hole 6 of the pin board 3.

  However, according to the above-described conventional circuit board inspection apparatus, the positioning of the pin board 3 and the movable plate 4 is performed manually by inserting the positioning pin 8 from the guide hole 7 of the movable plate 4 into the guide hole 6 of the pin board 3. For this reason, there is a problem that it is possible to forget to insert the positioning pin 8, and the positioning pin 8 may be lost.

  In this regard, in Patent Document 1, for example, a bag hole (a hole having a bottleneck-shaped narrow neck) is formed on the pin board side, and a spring-biased positioning pin is retractably stored in the bag hole. In the process of inserting the pin board into the holding part of the movable plate, when the positioning pin matches with the guide hole drilled on the movable plate side, the positioning pin enters the guide hole by the spring bias. A positioning means is described.

  According to this, the pinboard is automatically positioned in the process of inserting the pinboard into the holding portion of the movable plate, but it takes time to form the bag hole. In particular, when it is provided on the pin board side, it is necessary to form a bag hole for each pin board manufactured corresponding to the circuit board to be inspected. Further, in order to release the engagement between the positioning pin and the guide hole, it is necessary to return the positioning pin with a release pin or the like, which is not preferable in terms of workability.

JP 2012-26889 A

  SUMMARY OF THE INVENTION An object of the present invention is to provide a circuit board inspection apparatus with good workability in which a pin board can be positioned and securely attached to a movable plate.

In order to solve the above-mentioned problems, the invention according to claim 1 includes a base on which a circuit board to be inspected is mounted, a movable plate that moves up and down relative to the base, and a test probe that contacts the circuit board to be inspected. The movable plate has a holding portion that slidably holds the pin board along the lower surface of the movable plate, and a first guide hole for positioning the pin board. The pin board is provided with a second guide hole that has the same diameter as the first guide hole and can be coaxially aligned. By inserting the positioning pin with the guide holes aligned, In the circuit board inspection apparatus for positioning and mounting the pin board with respect to the movable plate,
The positioning pin has a pin shaft portion inserted through the first guide hole and the second guide hole, and a pin head having a diameter larger than that of the pin shaft portion. First biasing means for biasing the shaft portion toward the guide hole is provided;
The upper surface of the movable plate is slidable in the same direction as the sliding direction of the pinboard, and is along the insertion direction of the pinboard into the holding portion with the first guide hole side as a tip position. A slide arm extending in the backward direction is arranged,
The slide arm is in a state in which the positioning pin is lifted against the first urging means so as to enter under the pin head at the tip side and to pull out the pin shaft portion from at least the second guide hole. While having a lift-up portion to hold, a contact portion that contacts the pin board inserted into the holding portion and moves the slide arm to the retract side is formed on the retract side thereof,
The movable plate is provided with second urging means for moving the slide arm forward toward the positioning pin.
By bringing the pin board into contact with the contact portion and retracting the slide arm against the second urging means, the lift-up portion is removed from the pin head, and the pin board slides. When the second guide hole coincides with the first guide hole in accordance with movement, the pin shaft portion is inserted between the guide holes by the first urging means, and the pin is inserted into the movable plate. The board is positioned.

  According to a second aspect of the present invention, in the first aspect of the invention, in the state where the pin shaft portion is inserted between the guide holes and the pin board is positioned with respect to the movable plate, the positioning pin is When the pin shaft portion is lifted against the first urging means and pulled out from the second guide hole, the slide arm is advanced by the second urging means, and the pin board is moved to the contact portion. The lift-up part is pushed back to the position where it enters under the head of the pin.

  According to a third aspect of the present invention, in the first or second aspect, the lift-up portion is formed with an inclined surface which is a forward direction along the forward direction of the slide arm with respect to the positioning pin, The inclined surface includes a fitting groove into which the pin shaft portion is fitted.

  According to a fourth aspect of the invention, in the third aspect of the invention, the urging force of the second urging means is set to be larger than the horizontal component force of the inclined surface of the first urging means. It is said.

  According to a fifth aspect of the present invention, the movable plate according to any one of the first to fourth aspects, wherein the movable plate retains a compression coil spring as the first urging means on the pin head. It is characterized by having a member.

  A sixth aspect of the present invention is the method according to any one of the first to fifth aspects, wherein the first guide hole and the second guide hole have the same number and the same diameter and are provided in at least two or more locations. The slide arm is provided in the number corresponding to the number of the guide holes.

  A seventh aspect of the present invention is the method according to any one of the first to fifth aspects, wherein the first guide hole and the second guide hole have the same number and the same diameter and are provided in at least two or more locations. The slide arm includes an arm base having the contact portion, and the slide arm is branched from the arm base by the number of the guide holes.

  According to the present invention, when the pin board is positioned on the movable plate, the pin board is brought into contact with the contact portion and the slide arm is second-biased in the process of inserting the pin board into the holding portion of the movable plate. When the lift-up part moves away from the pin head of the positioning pin and the guide holes of the movable plate and the pin board match each other, the first biasing means guides the pin shaft part of the positioning pin. Since it is automatically inserted between the holes, the user only has to insert the pin board into the holding part of the movable plate, and the pin board can be easily positioned on the movable plate by a simple operation.

  Further, when removing the pin board from the movable plate in a state where the movable plate and the pin board are positioned, the pin shaft portion of the positioning pin can be pulled out from the second guide hole of the pin board, and the positioning state can be thereby improved. The pin board is pushed out from the holding part of the movable plate by the second urging means, and the slide arm advances toward the positioning pin and the lift-up part enters under the pin head of the positioning pin. Even if the hand is released from the positioning pin, the positioning pin is held in a standby state (initial state) in which the positioning pin is lifted upward.

The perspective view which isolate | separates and shows the circuit board inspection apparatus which concerns on embodiment of this invention in a pin board and a movable board. In the circuit board inspection apparatus, (a) a cross-sectional view showing a state before the pin board is attached to the movable plate, (b) a cross-sectional view showing a state where the pin board is attached to the movable plate, and (c) the pin board being the movable plate. Sectional drawing which shows the state removed from. The perspective view which expands and shows typically the positioning pin and spring holding part which concern on the said circuit board inspection apparatus. The top view which shows typically the other example of the slide arm of the circuit board inspection apparatus which concerns on embodiment of this invention. The perspective view which isolate | separates and shows the conventional board | substrate fixing device with a pin board and a movable plate. Sectional drawing which shows typically the attachment process of the pin board and movable plate in the said conventional board | substrate fixing apparatus.

  Next, an embodiment of the present invention will be described with reference to FIGS. 1 to 4, but the present invention is not limited to this.

  Referring to FIG. 1, a circuit board inspection apparatus according to this embodiment includes a base 1 on which a circuit board D to be inspected is placed and a movable base that is moved up and down with respect to the base 1 by lifting means such as an air cylinder. A board (also referred to as a press board) 10 and a pin board 20 on which a test probe (not shown) that contacts the circuit board D to be inspected are provided. For the test probe, see the test probe 6 in FIG. 6 described above.

  The movable plate 10 is preferably made of a hard substrate such as metal or acrylic resin. In this embodiment, on the lower surface (surface facing the base 1) 10b side of the movable plate 10, as a holding portion of the pin board 20, A pair of guide rails 11, 11 having a substantially L-shaped cross section for slidably holding the opposing side edge portions 21 of the pin board 20 are provided.

  The pin board 20 is preferably made of an electrically insulating hard substrate such as acrylic resin, and is positioned with respect to the movable plate 10 so that the test probe can come into contact with the circuit board D to be inspected at an accurate position. Attached.

  Specifically, as shown in FIGS. 1 and 2, the movable plate 10 has a predetermined interval 2 along its one end 10 c side (the front side in FIG. 1 and the left side in FIG. 2). The first guide holes 12 and 12 are provided, and the pin board 20 has a predetermined interval along the end 20a side (the front side in FIG. 1 and the left side in FIG. 2). Two second guide holes 22 are provided. The first guide hole 12 and the second guide hole 22 have the same diameter.

  In this embodiment, as shown in FIGS. 2 and 3, the positioning pin 30 includes a cylindrical pin shaft portion 31 having substantially the same diameter as the guide holes 12 and 22 of the movable plate 10 and the pin board 20, and A cylindrical pin head 32 having a diameter larger than that of the pin shaft portion 31 is provided.

  As shown in FIG. 3, the positioning pin 30 is provided with first biasing means for biasing the pin shaft portion 31 toward the guide holes 12 and 22. In this embodiment, a compression coil spring 33 disposed on the pin head 32 is used as the first biasing means.

  In this embodiment, the compression coil spring 33 is held on the pin head 32 by a spring holding member 60.

  The spring holding member 60 has an inverted L-shape including a side plate 62 erected from the side surface of the movable plate 10 and a top plate 61 that is bent in a bowl shape at a substantially right angle from the upper end of the side plate 62 toward the positioning pin 30 side. The top plate 61 is provided with a spring receiving plate 34 having, for example, a disk shape for holding the compression coil spring 33 between the pin head 32 and the top plate 61.

  In this embodiment, two slide arms 40 are arranged corresponding to the two positioning pins 30 on the upper surface 10a side (the non-base surface side) of the movable plate 10, and these slide arms 40 are pinboards. It is possible to slide in the same direction as 20 sliding directions.

  In addition, since the structure of the two slide arms 40 is the same, in the following description, the structure of the one slide arm 40 is demonstrated. In the following description, the direction of movement of the slide arm 40 toward the one end 10c of the movable plate 10 (the direction of movement toward the positioning pin 30) is defined as the forward direction, and the movement toward the opposite side is defined as the backward direction. explain.

  The slide arm 40 is disposed so as to extend in the retreat direction (rear end side direction) along the insertion direction of the pin pad 20 with the first guide hole 12 side of the movable plate 10 as the front end position. 1 and 2, a lift-up portion 41 that holds the pin head 32 of the positioning pin 30 in a lifted state against the urging force of the compression coil spring 33 (first urging means) is provided. Is provided.

  The lift-up portion 41 is formed with an inclined surface 42 that is forward along the forward direction of the slide arm 40 with respect to the positioning pin 30, and the pin shaft portion 31 of the positioning pin 30 is fitted on the inclined surface 42. A mating groove 43 to be mated is provided. The outer diameter of the pin head 32 is larger than the groove width of the fitting groove 43, and the pin head 32 cannot enter the fitting groove 43.

  The slide arm 40 is integrally provided with a contact portion 50 that contacts the other end 20b of the pin board 20 inserted into the guide rails 11 and 11 and moves the slide arm 40 to the backward side. In this embodiment, the contact portion 50 is bent at a substantially right angle so as to face the pinboard insertion space formed between the guide rails 11, 11 from the rear end side of the slide arm 40.

  In this embodiment, a partition plate 13 is provided on the rear end side of the guide rails 11 and 11 so as to face the back surface of the contact portion 50 with a predetermined interval. Between them, a compression coil spring 14 is provided as a second urging means for advancing the slide arm 40 toward the positioning pin 30 side.

  The partition plate 13 is disposed at a position where the pin board 20 can be pushed along the guide rails 11 and 11 to a position where at least the first guide hole 12 and the second guide hole 22 match. .

  Further, as the pin board 20 is pushed in, the slide arm 40 is also retracted via the abutment portion 50, whereby the lift-up portion 41 is detached from the pin head 32, but the first guide hole 12 and the second guide hole 22. The position of the contact portion 50 is determined so that the lift-up portion 41 is disengaged from the pin head portion 32 at the time point when or coincides with.

  In this embodiment, each slide arm 40 is provided with a substantially U-shaped presser plate 70 so as to press the outer peripheral surface including the upper surface 40a and the side surfaces thereof. It moves straight without having to do it.

  Next, an example of an operation for positioning the pin board 20 on the movable plate 10 will be described with reference to FIG.

  For example, the lift-up portion 41 is removed from the pin head 32 of the positioning pin 30, the pin head 32 is pressed against the upper surface 10 a of the movable plate 10 by the compression coil spring 33, and the end of the inclined surface 42 of the lift-up portion 41. However, when the user grips the pin head 32 and lifts the positioning pin 30 against the compression coil spring 33 with the pin head 32 being abutted, the slide arm 40 is advanced by the compression coil spring 14. The lift-up part 41 sinks under the pin head 32.

  Accordingly, even if the user releases the hand from the pin head 32, the positioning pin 30 is lifted so that the pin shaft portion 31 stays in the first guide hole 12 of the movable plate 10 and does not protrude from the lower surface 10b of the movable plate 10. It is held in a state where it is lifted by the up portion 41, that is, in a state where the pin board 20 can be inserted between the guide rails 11, 11 (initial state).

  Preferably, the spring force of the compression coil spring 14 is set larger than the horizontal component force by the inclined surface 42 of the compression coil spring 33, and the pin head 32 is forced by the spring force of the compression coil spring 14. It is preferable that the positioning pin 30 is automatically lifted by the lift-up portion 41 so as to climb up on the inclined surface 42.

  In any case, as shown in FIG. 2A, the pin board 20 is moved to the pair of guide rails 11 of the movable plate 10 while the positioning pin 30 is held by the lift-up portion 41 of the slide arm 40. 11 (in the direction of arrow a in FIG. 2A).

  Then, the pin board 20 is pushed in the backward direction to be brought into contact with the contact portion 50 and is further moved toward the partition plate 13 against the urging force of the compression coil spring 14 (direction of arrow b in FIG. 2 (b)). .

  As a result, the slide arm 40 also moves in the backward direction on the upper surface 10a of the movable plate 10 (in the direction of arrow c in FIG. 2 (b)), the lift-up portion 41 comes off from the pin head 32, and the urging force of the compression coil spring 33 Thus, the pin shaft portion 31 can be inserted into the second guide hole 22 of the pin board 20.

  When the pin board 20 is further retracted and reaches the position where the second guide hole 22 matches the first guide hole 12, the pin shaft portion 31 is moved to the guide holes 12, 22 by the urging force of the compression coil spring 33. The pin board 20 is inserted with respect to the movable plate 10, thereby positioning the pin board 20 with respect to the movable plate 10.

  To remove the pin board 20 from the movable plate 10 after the inspection of the circuit board is completed, the positioning pin 30 is lifted so as to be pulled out from the second guide hole 22 of the pin board 20 against the urging force of the compression coil spring 33. Good (direction of arrow e in FIG. 2C).

  Then, as shown in FIG. 2 (c), the slide arm 40 is advanced by the urging force of the compression coil spring 14, and the pin head 32 is preferably lifted gradually along the inclined surface 42 of the lift-up portion 41. (FIG. 2 (c) arrow f direction) Since the positioning pin 30 is held by the lift-up portion 41 and the pin board 20 is pushed out between the guide rails 11 and 11, the pin board 20 is moved to the arrow of FIG. 2 (c). It can be pulled out in the g direction.

  As described above, according to the present invention, the pin board 20 is easily positioned with respect to the movable plate 10 by a simple operation of pushing the pin board 20 between the guide rails 11, 11 that are the holding portions of the movable plate 10. be able to.

  On the other hand, the removal of the pin board 20 from the movable plate 10 can be performed by an extremely simple operation of lifting the positioning pin 30 so as to be pulled out from the second guide hole 22 of the pin board 20. Further, since the positioning pin 30 is held on the movable plate 10 by the compression coil spring 33, it is not lost.

  In the above embodiment, the two positioning pins 30 are held by the two slide arms 40 in accordance with the number of the two guide holes 12 and 22, but another embodiment is shown in FIG. As described above, the slide arms 40 corresponding to the number of the guide holes 12 and 22 may be branched from the arm base portion 40A having the contact portion 50A.

  According to this, since the slide of the plurality of slide arms 40 can be performed by the movement of the single contact portion 50A, the movement of each slide arm 40 is eliminated, and the positioning pin 30 is inserted into the guide holes 12, 22. At the same time, it can be reliably inserted.

  Moreover, in the said embodiment, although the set of the 1st guide hole 12 and the 2nd guide hole 22 is provided as 2 sets, if the pin boat 20 is guided straight without the side railing by the guide rails 11 and 11, There may be one set of the first guide hole 12 and the second guide hole 22.

  Moreover, in the said embodiment, although the inclined surface 42 is provided in the lift-up part 41, there is no inclined surface 42, the edge part of the lift-up part 41 is cut off substantially perpendicularly, and only the fitting groove | channel 43 is formed in the end surface. Such a mode may also be included in the present invention.

DESCRIPTION OF SYMBOLS 10 Movable plate 11 Guide rail 12 1st guide hole 13 Screen plate 14 Compression coil spring (2nd biasing means)
20 Pin board 21 Side edge portion 22 Second guide hole 30 Positioning pin 31 Pin shaft portion 32 Pin head 33 Compression coil spring (first biasing means)
34 Holder 40 Slide arm 41 Lift-up portion 42 Inclined surface 43 Fitting groove 50 Abutting portion 60 Spring holding portion 61 Top plate 62 Side plate 70 Holding plate

Claims (7)

A base on which the circuit board to be inspected is placed; a movable plate that moves up and down with respect to the base; and a pin board to which a test probe that contacts the circuit board to be inspected is attached. A holding portion that holds the pin board slidably along the lower surface of the movable plate, and a first guide hole for positioning the pin board, the pin board having the same diameter as the first guide hole. The circuit board is provided with a second guide hole that can be coaxially aligned, and by positioning the pin board with respect to the movable plate by inserting the positioning pins with the guide holes aligned with each other. In inspection equipment,
The positioning pin has a pin shaft portion inserted through the first guide hole and the second guide hole, and a pin head having a larger diameter than the pin shaft portion,
The positioning pin is provided with first biasing means for biasing the pin shaft portion toward the guide hole,
The upper surface of the movable plate is slidable in the same direction as the sliding direction of the pinboard, and is along the insertion direction of the pinboard into the holding portion with the first guide hole side as a tip position. A slide arm extending in the backward direction is arranged,
The slide arm is in a state in which the positioning pin is lifted against the first urging means so as to enter under the pin head at the tip side and to pull out the pin shaft portion from at least the second guide hole. While having a lift-up portion to hold, a contact portion that contacts the pin board inserted into the holding portion and moves the slide arm to the retract side is formed on the retract side thereof,
The movable plate is provided with second urging means for moving the slide arm forward toward the positioning pin.
By bringing the pin board into contact with the contact portion and retracting the slide arm against the second urging means, the lift-up portion is removed from the pin head, and the pin board slides. When the second guide hole coincides with the first guide hole in accordance with movement, the pin shaft portion is inserted between the guide holes by the first urging means, and the pin is inserted into the movable plate. A circuit board inspection apparatus characterized in that a board is positioned.   In a state where the pin shaft portion is inserted between the guide holes and the pin board is positioned with respect to the movable plate, the positioning pin is lifted against the first urging means and the pin shaft When the portion is pulled out from the second guide hole, the slide arm is advanced by the second urging means, the pin board is pushed out from the holding portion through the contact portion, and the lift-up portion The circuit board inspection apparatus according to claim 1, wherein the circuit board is returned to a position where it enters under the pin head.   The lift-up portion is formed with an inclined surface that is forward along the forward direction of the slide arm with respect to the positioning pin, and the inclined surface is a fitting groove into which the pin shaft portion is fitted. The circuit board inspection apparatus according to claim 1, further comprising:   4. The circuit board inspection apparatus according to claim 3, wherein the urging force of the second urging means is set to be larger than a horizontal component force by the inclined surface of the first urging means.   The said movable plate is provided with the spring holding member which hold | maintains the compression coil spring which is said 1st biasing means on the said pin head. Circuit board inspection equipment.   The first guide hole and the second guide hole have the same number and the same diameter, and are provided in at least two or more places, and the slide arm is provided by the number of the guide holes. The circuit board inspection apparatus according to any one of claims 1 to 5.   The first guide hole and the second guide hole have the same number and the same diameter, and are provided in at least two or more locations, and the slide arm includes an arm base portion having the abutting portion, and the arm 6. The circuit board inspection apparatus according to claim 1, wherein the slide arm is branched from the base by the number of the guide holes.

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