JP2002296327A - Inspection jig and method of inspecting circuit board, and manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently inspect a circuit board on which a component is mounted. SOLUTION: The inspection method is constituted of a first inspection jig 6, which is mounted of the fixation side 1 of an inspection apparatus and which supports a board-side connector 32, by making its insertion and pull direction to coincide with its operating direction and a second inspection jig 4, which is constituted of a jig-side connector 46 capable of being inserted and pulled with reference to the board-side connector 32, probes 41 which is brought into contact with test pads 31 and a body used to support the jig-side connector 46 and the probes 41. The inspection jig 4 sets its insertion and pull direction to a direction which coincides with the operating direction of the inspection apparatus, it movably supports the jig-side connector 46 inside a plane at right angles to the operating direction, and it supports the probes 41 in positions overlapped with the test pads 31 inside the plane which are at right angles with respect to the operating direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig, an inspection method, and a manufacturing method suitable for inspecting a circuit board, in particular, a computer motherboard.

[0002]

2. Description of the Related Art In a circuit board manufacturing process, after a predetermined process, each circuit on the board is connected to an inspection device.
Inspection is performed by transmitting and receiving signals to and from the circuit board.

On a circuit board such as a motherboard, devices such as a keyboard and a disk drive are sometimes connected. In such a case, inspection is performed while simulating the connection of these devices on an inspection program. In addition to performing the inspection, it is desirable that the connector of these devices is actually connected to the connector provided on the circuit board to perform the inspection.

[0004]

However, there is a demand for labor saving in the above inspection process from the viewpoint of production efficiency, and the problem is how to reduce the labor of inserting and removing the connector on the device side with respect to the connector on the circuit board side. Had become.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to save labor in inspecting a circuit board.

[0006]

In order to achieve the above object, an inspection jig according to the present invention comprises a circuit board 3 having a board-side connector 32 connected to a circuit provided on a surface thereof, and a circuit board having the same. Then, in a test jig interposed between the test apparatus and a test apparatus which is operated in a predetermined direction and is electrically connected to the circuit board, the test jig is mounted on the fixed side 1 of the test apparatus, and the board-side connector 32 A first inspection jig 6 supporting the insertion / removal direction of the jig in accordance with the operation direction, a jig-side connector 46 that can be inserted into / removed from the board-side connector 32, and a main body that supports the jig-side connector 46. The second consisting of
The second inspection jig 4 has the jig-side connector 46 with its insertion / removal direction oriented in a direction coinciding with the operation direction of the inspection device, and ,
It is characterized in that it is movably supported in a plane perpendicular to the operation direction. The circuit board 3 further includes:
A test pad 31 made of a conductor connected to a predetermined portion of the circuit is provided to extract a signal required for an inspection, and a probe 41 that contacts the test pad 31 is provided on the second inspection jig 4. Supported by the main body, the second inspection jig 4 supports the probe 41 movably in the direction of the operation at a position overlapping the test pad 31 in a plane intersecting the direction of the operation. It is characterized by. Further, the first inspection jig 6 is characterized in that a probe 41 that is in contact with the test pad 31 is provided so as to be movable in the operating direction. One of the first and second inspection jigs has a support member for supporting a contact pressure with the probe at a position overlapping a probe of the other inspection jig in a plane perpendicular to the operation direction. 61 is provided. In addition, the first
The jig 6 is provided with a support member 61 for supporting the pressure at the time of inserting the jig-side connector at a position overlapping the board-side connector 32 in a plane orthogonal to the operation direction. I do. Further, a second jig-side connector 51 that can be inserted into and removed from another board-side connector provided on the circuit board 3, and a state in which the second jig-side connector is connected to the other board-side connector, It is characterized by having an auxiliary circuit board 5 having a test pad 52 arranged at a position overlapping a probe 61 of the second inspection jig 4 in a plane orthogonal to the operation direction. Further, instead of the support member 61, an auxiliary support member 62 is provided in a position not overlapping with the board-side connector 32 in a plane orthogonal to the operating direction and near the board-side connector 32. And The jig-side connector 46 is provided with a surface 46a that is inclined with respect to the operation direction at the tip end. Further, a circuit board 3 having a board-side connector 33 connected to a circuit provided on a surface thereof, and an inspection which operates in a predetermined direction when the circuit board 3 is set and is electrically connected to the circuit board 3. In the inspection jig interposed between the jig-side connector 51 and the jig-side connector 51, the jig-side connector 51 can be inserted into and removed from the board-side connector 33.
A first inspection jig supporting the circuit board 3 and an auxiliary circuit board 5 having a test pad 52 disposed in a plane intersecting the operation direction with the board connected to the board-side connector 33 6, a probe 41 which comes into contact with a test pad 52 of the auxiliary circuit board 5, and a probe 41
And a second inspection jig 4 composed of a main body supporting the probe 41. The second inspection jig 4 moves the probe 41 in a plane intersecting the direction of the operation. It is characterized in that it is supported movably in the direction of the operation at a position overlapping the test pad 52. The circuit board 3
Is further provided with a test pad 31 made of a conductor connected to a predetermined portion of the circuit in order to extract a signal required for inspection. The second inspection jig 4 includes a test pad 31 of the circuit board 3. A probe 41 that contacts the circuit board 31 is supported by the main body, and the second inspection jig moves the probe to the circuit board 3 in a plane that intersects the operation direction.
And is movably supported in the direction of the operation at a position overlapping the test pad 31. Further, a part of the probe 41 that contacts the test pad 31 of the circuit board 3 also serves as the probe 41 that contacts the test pad 52 of the auxiliary circuit board 5. Further, the first inspection jig is characterized in that a probe 61 which is in contact with the test pad 31 of the circuit board 3 is provided so as to be movable along the operation direction. One of the first and second inspection jigs 4 and 6 supports a contact pressure with the probe at a position overlapping with the probe of the other inspection jig in a plane intersecting the operation direction. A support member 61 is provided.

Further, according to the inspection method of the present invention, a test pad 31 composed of a conductor connected to a predetermined portion in a circuit and a board-side connector 32 connected to the circuit are provided on a surface to extract a signal required for the inspection. First and second inspection jigs between the circuit board 3 provided and an inspection apparatus which operates in a predetermined direction when the circuit board is set and is electrically connected to the circuit board 3 A step of supporting the board-side connector 32 so that the insertion / removal direction of the board-side connector 32 coincides with the operating direction by the first inspection jig 4; The connector 46 is supported so that its insertion / removal direction is directed to a direction coinciding with the operation direction of the inspection device, and movably in a plane perpendicular to the operation direction, and the probe 41 is perpendicular to the operation direction. Do The second jig for inspection is brought close to the circuit board while being movably supported in the direction of the operation at a position overlapping the test pad 31 in the plane, and the jig-side connector 46 is inserted into the board-side connector. And contacting the probe 41 with the test pad;
Inspecting the circuit board by a signal input / output via the jig-side connector 46 and the probe 41. Further, the manufacturing method of the present invention is characterized in that, after the step of attaching the electronic component to the circuit board, the step of inspecting the circuit board by the above method is performed.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a fixed part of the inspection device, and reference numeral 2
Are moving parts, which are provided so as to be relatively movable in a direction approaching and moving away from each other. In the illustrated example, the moving unit 2 moves relative to the fixed unit 1, that is, the inspection apparatus performs the inspection by operating in one direction of freedom (up and down direction in FIG. 1). .

Reference numeral 3 denotes a circuit board to be inspected, reference numeral 4 denotes a jig supported by the moving unit 2, reference numeral 5 denotes an auxiliary circuit board attached to the circuit board, and reference numeral 6 denotes a jig supported by the fixed unit 1. Tool.

The circuit board 3 is manufactured by mounting an electronic component on a substrate on which a circuit pattern is formed, and electrically connecting the electronic component to the circuit pattern by a solder reflow process. On its surface, a test pad 31 for extracting a signal required for inspection is provided as a part of a circuit pattern, and connectors 32 and 3 used for connection to devices such as a keyboard and a disk drive are provided.
3 are provided. In the case shown, the circuit board 3 is placed on the jig 6 so that the insertion / removal direction of the connectors 32 and 33 and the operation direction of the inspection device match. Specifically, the electrodes incorporated in the connectors 32 and 33 are supported in the inspection apparatus such that the directions of the electrodes match the operation directions of the inspection apparatus. The test pad 31
Means that not only the original circuit pattern is provided separately for the transmission and reception of the test signal, but also all the conductor parts that receive and transmit the test signal, such as the circuit pattern itself and the leads of the mounted components. Shall be included.

The jig 4 is made of an insulating material such as plastic, has a plate shape as a whole, and is attached to the moving section 2 of the inspection apparatus. The jig 4 is provided with a probe 41 that comes into contact with the test pad 31 so as to be movable along the moving direction of the moving unit 2.
The probe 41 is made of metal.
Are arranged in the support holes 42. In the probe 41,
The flange portion 43 is fixed.
A compression spring 44 is provided between the holding plate 45 and the holding plate 45 for closing the support hole 42. As a result, the probe 4
1 rises from the state shown in FIG. 2 to the state shown in FIG. 1 while compressing the compression spring 44 by coming into contact with the test pad 31. As a result, the probe 41 and the test pad 31
And a predetermined contact pressure is generated between them.

A connector 46 which is inserted into and removed from the connector 32 is attached to the jig 4 via a support plate 47. The support plate 47 is fixed by screwing the bolt 48 into the jig 4 through a bolt hole 49 having a larger diameter than the bolt 48. As a result, the support plate 47 is fixed.
Are supported movably in the plane direction of the jig 4 (in a plane orthogonal to the moving direction of the moving unit 2). An inclined surface 46a is provided at an end of the connector 46, and the inclined surface 46a comes into contact with the tip of the connector 32, so that the connector 46 can move in the surface direction at the time of insertion and removal. Note that the jig 6 is also provided with a probe 41 similar to the jig 4 so as to be in contact with the test pad 31 on the lower surface of the circuit board 3.

On the other hand, a connector 51 to be inserted into and removed from the connector 33 is attached to the auxiliary circuit board 5,
For example, when a larger insertion / extraction force than the connector 32 is required, higher positioning accuracy is required for insertion / extraction, or when the insertion / extraction direction is different from that of the connector 32 (for example, although not shown, the insertion / extraction The electrode is connected to a test pad 52 on the upper surface of the auxiliary substrate 5. In addition,
Of the probes 41 provided on the jig 41, the tip that comes into contact with the test pad 52 is located at a position higher than the one that comes into contact with the test pad 31 on the circuit board 3. The use of such an auxiliary circuit board 5 allows the inspection apparatus to be mounted on the circuit board when there is a possibility that noise may be mixed in by running long wiring between the equipment to be connected via the connector 51 and the like. 3 can be connected to the circuit 3 via the shortest path via the auxiliary circuit board 5 or the probe 42.

The jigs 4 and 6 are provided with a support member 61 for receiving a force due to contact with the probe 41 and the connector 46. That is, among the support members 61, those provided on the jig 6 are arranged at positions overlapping the test pads 31 and the connectors 32 and 33 on the circuit board 3 in plan view, and the probe 41 of the jig 4 is used for the test. When contacting the pads 31, 51 or when the connector 46 is inserted into the connector 32, the bending of the circuit board 3 due to the downward force in FIG. 1 is prevented, and the contact due to the test pad 31 and the like escaping downward is thereby prevented. The occurrence of defects is prevented. The support member 61 provided on the jig 4 is provided at a position overlapping the probe 41 on the jig 6 side in plan view, and supports the contact pressure.

The inspection process of the circuit board 3 using the jigs 4, 5 and 6 having the above configuration is as follows. As shown in FIG. 2, the moving unit 2 is raised, the jig 6 is set on the fixed unit 1, and the jig 4 is set on the moving unit 2. The circuit board 3 is placed at a predetermined position on the jig 6. The predetermined position referred to here means that the probe 41 is connected to the test pad 3
1 and a position where the support member 61 is positioned at a position corresponding to the test pad 31 on the upper surface.
The probe 41 retracts while compressing the compression spring 44 by contacting the test pad 31 with the circuit board 3 mounted thereon. In addition, in order to position the jig 6 and the circuit board 3, a mark may be provided or a fitting structure for positioning may be provided. The connector 51 of the auxiliary circuit board 5 is inserted into the connector 33 on the circuit board 3. When the moving section 2 of the inspection device is lowered, the tip of the connector 32 comes into contact with the inclined surface 46a of the connector 46, so that the connector 46 moves in the plane direction within the range of the dimensional difference between the bolt hole 49 and the bolt 48, The connector is inserted into the connector 32 while being aligned by this movement. The force of this insertion is supported by contacting the support member 61 arranged at a position corresponding to the connector 32 on the circuit board 3.

Each probe 41 comes into contact with the test pads 31 and 52 and rises while compressing the compression spring 44. The probe 4 is connected to the test pad 52.
1 is supported by the support member 61 provided at a position corresponding to the connector 33 on the jig 6. The circuit board 3 is inspected by transmitting and receiving signals to and from an inspection device (inspection circuit) to which each probe 41 is connected and to an external device to which the connector 46 is connected. The inspection ends when the moving unit 2 is raised.

In the above-described embodiment, the support member 61 is provided on the jig 6 at a position corresponding to the connector 32. However, a support member 62 may be arranged as shown in FIG. That is, the connector 32 on the circuit board 32
When a test pad is provided on the surface on the opposite side (the lower surface in FIG. 1) and it is necessary to bring the probe into contact therewith, as shown in FIG. Support member 6 at a position not overlapping with 32
2 may be arranged.

Further, even when the positions of the test pads on the front and back of the circuit board 3 overlap or are extremely close,
Similarly, the support member may be arranged at a position that does not overlap with the probe contact point on the opposite surface and in the vicinity thereof.

In the above embodiment, the fixed side and the movable side of the inspection apparatus relatively move with a degree of freedom in a one-dimensional direction, but move relatively with a degree of freedom in a rotational direction about an axis. The present invention can be applied to such cases. In this case, the attachment of the support plate 47 to the second jig 4 not only has a degree of freedom in each direction in a plane orthogonal to the moving direction as in the illustrated example, but also intersects at various angles with the moving direction. It is necessary to provide a degree of freedom in each plane. Specifically, by interposing an elastic member such as a spring between the support plate 47 and the second jig 4, the support plate 47
Can be supported on the second jig 4 with a plurality of degrees of freedom.

The circuit board to which the present invention is applied is:
It is needless to say that the present invention is not limited to the motherboard of the above-described embodiment, but can be applied to various circuit boards that require a circuit on the board and an inspection device to be connected via a connector.

[0021]

As apparent from the above description, the present invention has the following effects. A first inspection jig for supporting the insertion / removal direction of the board-side connector on the fixed side of the inspection apparatus in accordance with the operation direction, a jig-side connector insertable / removable to / from the board-side connector, and the test pad And a second inspection jig composed of a jig-side connector and a main body that supports the probe, and the second inspection jig is provided with the jig-side connector. The insertion / extraction direction is directed to a direction coinciding with the operation direction of the inspection device, and is movably supported in a plane perpendicular to the operation direction, and the probe is connected to the test pad in a plane perpendicular to the operation direction. Since the probe is movably supported in the direction of the operation at the overlapping position, the probe can be brought into contact with the test pad to transmit and receive a predetermined signal to and from the inspection device together with the operation of the inspection device. At the same time, the jig-side connector is inserted into the board-side connector can be inspected in a state of connecting the circuit board to an external device or the like. Also, in the first inspection jig, since the probe in contact with the test pad is provided so as to be movable along the operation direction, even if the test pad is present on the back surface of the circuit board, By mounting this, the probe can be brought into contact with the test pad. Further, in any of the inspection jigs, at a position overlapping with the other probe in a plane orthogonal to the operation direction,
Since the support member for supporting the contact pressure with the probe is provided, the support member receives the force due to the contact of the probe, maintains the contact pressure between them at a predetermined level or more, and ensures electrical connection. be able to. Further, since the first jig is provided with a support member for supporting the pressure at the time of inserting the jig-side connector at a position overlapping the board-side connector in a plane orthogonal to the operation direction. When the connector is inserted, the circuit board is supported, so that the circuit board can be surely inserted into the connector on the board side while preventing bending. Further, a second jig-side connector that can be inserted into and removed from another board-side connector provided on the circuit board, and the operation direction in a state where the second jig-side connector is connected to the other board-side connector. By providing an auxiliary circuit board having a test pad arranged at a position overlapping with the probe of the second inspection jig in a plane perpendicular to the plane of the second inspection jig. Also, by contacting the probe with the connector, signals necessary for the inspection can be transmitted and received. In addition, a test pad or the like is present on the back side of the connector by providing an auxiliary support member in a position not overlapping with the board side connector in a plane orthogonal to the operation direction of the inspection device and near the board side connector. Even in this case, the force applied at the time of insertion and removal can be supported. Also, since the end of the jig-side connector is provided with a surface inclined with respect to the operation direction, the jig-side connector moves in the surface direction when the end of the board-side connector comes into contact. Aligned. Further, by performing the inspection performed together with such an operation after the mounting step on the circuit board, there is an effect that the manufacturing efficiency of a circuit board such as a computer motherboard can be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of one embodiment of the present invention.

FIG. 2 is a cross-sectional view of the device of FIG. 1 before operation.

FIG. 3 is a plan view of another embodiment of the present invention.

[Explanation of symbols]

1 inspection equipment (fixed part) 2 inspection equipment (moving part)
3 circuit board 4 (second) jig 5 auxiliary board
6 (first) jig 3 1 test pad 32 connector
33 Connector 41 Probe 42 Support hole
44 Compression spring 46 Connector 46a Inclined surface
47 Support plate 48 Bolt 49 Bolt hole
51 connector 52 test pad 61 support member
62 Support members

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tokiyasu Ibe 7546 Yasuda, Niigata Nippon Electric Co., Ltd. Niigata Nippon Electric Co., Ltd. F term (reference) 2G011 AA14 AB01 AC06 AC14 AE01 AF06 2G014 AA01 AB01 AB59 AC09 2G132 AA20 AF04 AJ04 AL03 AL11

Claims (16)

[Claims] 1. A circuit board having a board-side connector connected to a circuit provided on a surface thereof, and an inspection apparatus which operates in a predetermined direction when the circuit board is set to be electrically connected to the circuit board. A first inspection jig mounted on the fixed side of the inspection device and supporting the insertion / removal direction of the board-side connector in accordance with the operation direction; and A second inspection jig comprising a jig-side connector that can be inserted into and withdrawn from the side connector, and a main body that supports the jig-side connector. The second inspection jig Is a jig for inspection, characterized in that the jig-side connector is supported so that its insertion / removal direction is oriented in a direction coinciding with the operation direction of the inspection device and is movable in a plane intersecting the operation direction. Utensils. 2. The circuit board is further provided with a test pad made of a conductor connected to a predetermined portion of the circuit in order to extract a signal required for an inspection. A probe that contacts a test pad is supported by the main body, and the second inspection jig moves the probe in the direction of the operation at a position overlapping the test pad in a plane that intersects the direction of the operation. The inspection jig according to claim 1, wherein the inspection jig is freely supported. 3. The inspection jig according to claim 2, wherein a probe contacting the test pad is provided on the first inspection jig so as to be movable in the operating direction. Ingredient 4. One of the first and second inspection jigs supports a contact pressure with a probe at a position overlapping with a probe of the other inspection jig in a plane intersecting the operation direction. The inspection jig according to claim 3, wherein a support member is provided. 5. A support member for supporting a pressure when inserting the jig-side connector is provided at a position overlapping with the board-side connector in a plane intersecting the operation direction, in the first jig. The inspection jig according to any one of claims 1 to 4, wherein: 6. A second jig-side connector that can be inserted into and removed from another board-side connector provided on the circuit board, and a state in which the second jig-side connector is connected to the other board-side connector. 6. An auxiliary circuit board having a test pad disposed at a position overlapping a probe of the second inspection jig in a plane intersecting the operation direction. Inspection jig described in. 7. The first jig is provided with a support member for supporting a pressure when inserting the jig-side connector at a position overlapping the board-side connector in a plane intersecting the operation direction. The inspection jig according to any one of claims 1 to 6, wherein: 8. An auxiliary support member is provided instead of the support member according to claim 7, at a position not overlapping with the board-side connector in a plane intersecting the operating direction and near the board-side connector. 7. The method according to claim 1, wherein
The inspection jig according to any one of the above. 9. The inspection jig according to claim 1, wherein a surface inclined with respect to the operation direction is provided at a tip of the jig-side connector. 10. A circuit board provided with a board-side connector connected to a circuit on a surface thereof, and an inspection apparatus which operates in a predetermined direction when the circuit board is set and is electrically connected to the circuit board. A jig-side connector that can be inserted into and withdrawn from the board-side connector, and a jig-side connector connected to the board-side connector in a plane intersecting the operating direction. An auxiliary circuit board having a test pad disposed on a first inspection jig supporting the circuit board; a probe contacting a test pad of the auxiliary circuit board; and a main body supporting the probe. Composed second
The second inspection jig is capable of moving the probe in the direction of the operation at a position overlapping the test pad in a plane intersecting the direction of the operation. An inspection jig characterized by being supported by 11. The circuit board is further provided with a test pad made of a conductor connected to a predetermined portion of the circuit in order to extract a signal required for an inspection. A probe in contact with a test pad of the circuit board is supported by the main body, and the second inspection jig moves the probe at a position overlapping the test pad of the circuit board in a plane intersecting the direction of the operation. The inspection jig according to claim 10, wherein the inspection jig is movably supported in the direction of the operation. 12. The inspection jig according to claim 11, wherein a part of the probe that contacts the test pad of the circuit board also serves as a probe that contacts the test pad of the auxiliary circuit board. . 13. The apparatus according to claim 11, wherein a probe that contacts a test pad of the circuit board is provided on the first inspection jig so as to be movable in the operating direction. Inspection jig described 14. One of the first and second inspection jigs supports a contact pressure with a probe at a position overlapping a probe of the other inspection jig in a plane intersecting the operation direction. The inspection jig according to claim 13, wherein a support member is provided. 15. A circuit board having on its surface a test pad made of a conductor connected to a predetermined portion of a circuit for extracting a signal required for inspection, and a board-side connector connected to the circuit. A step of operating in a predetermined direction when the circuit board is set and interposing first and second inspection jigs between the circuit board and an inspection apparatus electrically connected to the circuit board; A step of supporting the board-side connector so that the insertion / removal direction of the board-side connector coincides with the operation direction by an inspection jig; and The probe is movably supported in a plane orthogonal to the operation direction in the same direction, and the probe is moved in a position overlapping the test pad in a plane orthogonal to the operation direction. Moving the second inspection jig close to a circuit board, inserting the jig-side connector into the board-side connector, and bringing the probe into contact with the test pad while movably supporting the probe. Inspecting the circuit board with a signal input / output via a jig-side connector and a probe. 16. A method for manufacturing a circuit board, comprising the step of inspecting the circuit board by the method according to claim 15, after the step of attaching the electronic component to the circuit board.