JP2020034359A - Inspection system - Google Patents

Abstract

To solve the problem that there is a desire for an inspection system with which it is possible to conduct test irrespective of the type of circuit board and improve the efficiency of test, as well as reduce the cost of test.SOLUTION: Provided is an inspection system equipped with a circuit board to be inspected and an inspection device for inspecting a signal state on the circuit board, the circuit board including a contact part composed of one or a plurality of contacts arranged in a row at edges, the inspection device including a terminal part composed of one or a plurality of terminals corresponding to the one or plurality of contacts and provided with a socket at least one side face of which is open, with the socket fitted into the circuit board in such a way that the contact part and the terminal part are brought into contact.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an inspection system for inspecting a circuit board.

  2. Description of the Related Art Conventionally, in a circuit board manufacturing process, confirmation tests such as a continuity test and an operation test are performed to confirm the normality of a manufactured circuit board. The confirmation test is generally performed by bringing a probe of an inspection device into contact with a test contact called a pad provided on a circuit board.

  For example, Patent Documents 1 and 2 disclose an inspection apparatus provided with a probe for measuring a power supply voltage, an electric signal, and the like. In this inspection device, a plurality of probes are provided in advance so as to correspond to the positions of the pads on the circuit board, and the probe is held in contact with the pads on the circuit board with a certain force while sandwiching the circuit board by vertical movement or the like. Then, the power supply voltage and the electric signal are measured.

JP 2014-13181 A JP 2014-16300 A

  However, since the position of the pad on the circuit board differs depending on the manufacturing model, the position of the probe of the inspection apparatus usually differs for each circuit board. That is, when measuring a power supply voltage or the like using a conventional inspection apparatus, an inspection apparatus corresponding to each of a plurality of types of circuit boards is required.

  Further, in recent years, the types of power supply voltage, electric signal, and the like in a circuit board tend to increase, so that the number of probes provided in the inspection apparatus increases, and the structure of the inspection apparatus is complicated. Further, when testing a plurality of circuit boards, it is necessary to sequentially replace the circuit boards, but at this time, if the installation position of the circuit boards is displaced due to the mechanical operation of the inspection device, the pads on the circuit boards may be replaced. Poor contact with the probe may occur, making accurate measurement difficult. That is, when a plurality of types of circuit boards are tested using a conventional inspection apparatus, test efficiency is reduced and test cost is increased.

  Therefore, in order to solve the above-mentioned problem, there is a demand for an inspection system capable of performing a test regardless of the type of a circuit board, improving the test efficiency, and reducing the test cost.

  An inspection system according to the present invention is an inspection system including a circuit board to be inspected and an inspection device for inspecting a state of a signal on the circuit board, wherein the circuit boards are arranged in a line at an edge. Alternatively, the inspection device includes a contact portion including a plurality of contacts, and the inspection device includes a terminal portion including one or a plurality of terminals corresponding to the one or the plurality of contacts, and at least one side surface is open. A socket, wherein the socket is fitted to the circuit board such that the contact portion and the terminal portion are in contact with each other.

  As described above, according to the present invention, the contact portion is provided at the peripheral portion of the circuit board, and at least one of the sockets of the inspection device is opened. Thus, the test can be performed by fitting the socket to the circuit board regardless of the type of the circuit board, so that the test efficiency can be improved and the test cost can be reduced.

FIG. 2 is a top view illustrating an example of the appearance of the circuit board according to the first embodiment. FIG. 2 is a schematic diagram illustrating an example of a shape of a socket of the inspection device according to the first embodiment. FIG. 4 is a schematic diagram for describing connection between a circuit board and a socket. FIG. 4 is a schematic diagram for describing connection between a circuit board and a socket. FIG. 13 is a top view illustrating an example of an appearance of a circuit board according to a second embodiment. FIG. 9 is a schematic diagram illustrating an example of a shape of a socket of the inspection device according to the second embodiment. FIG. 4 is a schematic diagram for describing connection between a circuit board and a socket. FIG. 15 is a top view illustrating an example of an appearance of a circuit board which is a modification example of the circuit board according to Embodiment 2; FIG. 4 is a schematic diagram for describing connection between a circuit board and a socket. FIG. 13 is a schematic diagram illustrating an example of a shape of a socket of the inspection device according to the third embodiment. It is the schematic which shows the example of a connection of each unit of FIG. FIG. 13 is a schematic diagram for describing mounting of a circuit board according to a fourth embodiment on a product. It is the schematic which shows the example which provided the connection terminal in the test | inspection apparatus, and provided the socket in the circuit board.

Embodiment 1 FIG.
Hereinafter, the inspection system according to the first embodiment of the present invention will be described. The inspection system according to the first embodiment inspects the state of various signals such as a power supply voltage and an electric signal flowing on a circuit board.

[Configuration of inspection system]
The inspection system according to the first embodiment includes a circuit board 1 to be inspected, and an inspection device for inspecting the circuit board 1. The inspection device is provided with a socket 2 connected to the circuit board 1.

(Circuit board 1)
FIG. 1 is a top view showing an example of the appearance of the circuit board 1 according to the first embodiment. A contact portion 10 having one or a plurality of contacts 11, 11,... For confirming a state of a predetermined signal in a circuit (not shown) provided on the circuit board 1 is formed on the circuit board 1. ing. Each of the one or more contacts 11, 11,... Of the contact portion 10 is a metal wire (lead wire) for input / output provided by a component (not shown) constituting a circuit provided on the circuit board 1. Alternatively, it is electrically connected to a conductor constituting a wiring pattern (not shown) provided on the circuit board 1. Further, the contact portion 10 is provided at a peripheral portion of the circuit board 1. The contact portion 10 in the example of FIG. 1 is formed on the right side of the upper end of the circuit board 1 when viewed from above. The position of the contact portion 10 is not limited to this example, and may be formed at any position as long as it is a peripheral portion.

  The one or more contact points 11, 11,... Are provided, for example, in a slit shape. .. Are provided in accordance with the number of signals to be inspected on the circuit board 1. The one or more contacts 11, 11,... Do not necessarily have to be slit-shaped, and the length of the interval between the plurality of contacts 11 is not limited, and may be provided side by side.

(Socket 2)
FIG. 2 is a schematic diagram showing an example of the shape of the socket 2 of the inspection device according to the first embodiment. FIG. 2 shows a front view of the socket 2 and a schematic sectional view of the right side. The socket 2 is provided in an inspection device for inspecting the circuit board 1, and the circuit board 1 is inserted therein. As shown in FIG. 2, the socket 2 has an insertion opening 2a into which the circuit board 1 is inserted. The socket 2 has a shape in which at least one side surface is open. In the example of FIG. 2, the left side surface is open when viewed from the front.

  Inside the socket 2, a terminal unit 20 having one or a plurality of terminals 21, 21,... Corresponding to the contacts 11, 11,. One or a plurality of terminals 21, 21,... Have elastic force, and when the circuit board 1 is inserted into the socket 2, each of the terminals 21, 21,. The contacts 11, 11,... Of the circuit board 1 contact the terminals 21, 21,.

  Note that the shape of the contact portion 10 and the shape of the socket 2 in the circuit board 1 may be a shape conforming to an existing standard, or may be a unique shape. That is, any shape may be used as long as it does not hinder the manufacture of the circuit board 1.

[Connection of circuit board 1 and socket 2]
Next, the connection between the circuit board 1 having the above configuration and the socket 2 will be described. FIG. 3 and FIG. 4 are schematic diagrams for describing connection between the circuit board 1 and the socket 2.

  As shown in FIGS. 3 and 4, when inserting the circuit board 1 into the socket 2, the bottom surface 1 a of the circuit board 1 is aligned with the inner wall 2 b on the bottom surface of the socket 2 and the inner wall 2 c on the side surface of the socket 2. The circuit board 1 is inserted into the socket 2 so that the side surface 1b of the circuit board 1 is along. Thus, the positioning of the socket 2 with respect to the circuit board 1 is performed, and the respective contacts 11, 11,... Of the circuit board 1 and the respective terminals 21, 21,.

  As described above, in the first embodiment, the contact portion 10 is provided on the peripheral portion of the circuit board 1 and at least one side surface of the socket 2 is open. This makes it possible to use a common inspection apparatus irrespective of the type of the circuit board 1 to be inspected, thereby improving the test efficiency and reducing the test cost.

  The socket 2 is fitted to the circuit board 1 such that the inner wall 2c on the side face of the socket 2 is along the side face 1b of the circuit board 1. Therefore, contact between the contact portion 10 of the circuit board 1 and the terminal portion 20 of the socket 2 can be reliably performed.

Embodiment 2 FIG.
Next, an inspection system according to Embodiment 2 of the present invention will be described. The second embodiment is different from the first embodiment in that a structure for positioning when connecting the circuit board and the socket is provided in each case. In the following description, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description will be omitted.

[Configuration of inspection system]
The inspection system according to the second embodiment includes a circuit board 3 to be inspected, and an inspection device for inspecting the circuit board 3. The inspection device is provided with a socket 4 connected to the circuit board 3.

(Circuit board 3)
FIG. 5 is a top view showing an example of the appearance of the circuit board 3 according to the second embodiment. As shown in FIG. 5, the circuit board 3 according to the second embodiment includes a contact portion 10 having one or more contacts 11, 11,. It is formed on the periphery. The circuit board 3 has a notch 31 for alignment with the socket 4. The cutout portion 31 is formed adjacent to the contact portion 10 at an edge where the contact portion 10 is provided.

(Socket 4)
FIG. 6 is a schematic diagram illustrating an example of the shape of the socket 4 of the inspection device according to the second embodiment. FIG. 6 is a view of the socket 4 as viewed from above, but shows a state in which the wall of the upper surface has been removed so that the inside of the socket 4 can be easily described.

  As shown in FIG. 6, similarly to the socket 2 of the first embodiment, the socket 4 is formed with an insertion port 2a and a terminal portion 20 having one or a plurality of terminals 21, 21,. I have. Further, the socket 4 is formed with a projection 41 for performing alignment with the circuit board 3. The protruding portion 41 is provided adjacent to the terminal portion 20 so as to protrude from the rear side toward the insertion port 2a.

[Connection of circuit board 3 and socket 4]
Next, the connection between the circuit board 3 and the socket 4 having the above configuration will be described. FIG. 7 is a schematic diagram for explaining the connection between the circuit board 3 and the socket 4. As shown in FIG. 7, when the circuit board 3 is inserted into the socket 4, the circuit board 3 is inserted into the socket 4 so that the projection 41 of the socket 4 and the notch 31 of the circuit board 3 are fitted. Is done. Thereby, the position of the socket 4 with respect to the circuit board 3 is adjusted, and the respective contacts 11, 11,... Of the circuit board 3 and the respective terminals 21, 21,.

(Modification)
FIG. 8 is a top view showing an example of the appearance of a circuit board 3A which is a modification of the circuit board 1 according to the second embodiment. As shown in FIG. 8, the circuit board 3A has a convex portion 3a as compared with the circuit board 3. And the contact part 10 is provided in the convex part 3a of the circuit board 3A.

  FIG. 9 is a schematic diagram for describing the connection between the circuit board 3A and the socket 4. When the circuit board 3A having such a convex portion 3a is inserted into the socket 4, the convex portion 3a of the circuit board 3A is sandwiched between the protrusion 41 of the socket 4 and the inner wall 2c of the side surface. Then, the circuit board 3A is inserted into the socket 4. Thereby, the positioning of the socket 4 with respect to the circuit board 3A is performed, and the respective contacts 11, 11,... Of the circuit board 3A and the respective terminals 21, 21,.

  As described above, in the modification of the second embodiment, the convex portion 3a formed on the circuit board 3A plays the same role as the notch 31 of the circuit board 3 in the second embodiment. Therefore, alignment of the socket 4 with respect to the circuit board 3A can be easily performed.

  As described above, in the second embodiment, the notch 31 is provided on the circuit board 3, and the protrusion 41 is provided at a position corresponding to the notch 31 of the socket 4. Thereby, the contact between the contact portion 10 of the circuit board 3 and the terminal portion 20 of the socket 4 can be performed more reliably.

Embodiment 3 FIG.
Next, an inspection system according to Embodiment 3 of the present invention will be described. The third embodiment is different from the first and second embodiments in that the socket is constituted by a plurality of divided units. In the following, a socket connected to the circuit board 3 described in the second embodiment will be described as an example. In the following description, configurations common to the first and second embodiments are denoted by the same reference numerals, and detailed description is omitted.

[Configuration of inspection system]
The inspection system according to the third embodiment includes a circuit board 3 to be inspected, and an inspection device for inspecting the circuit board 3. The inspection device is provided with a socket 6 connected to the circuit board 3.

  FIG. 10 is a schematic diagram illustrating an example of the shape of the socket 6 of the inspection device according to the third embodiment. FIG. 10 is a view of the socket 6 as viewed from the upper surface, but shows a state in which a wall on the upper surface is removed so that the inside of the socket 6 can be easily described.

  As shown in FIG. 10, the socket 6 includes an end unit 6A, a terminal unit 6B, and a positioning unit 6C. The end unit 6A is a unit including the side surface of the socket 6. In the example of FIG. 10, the end unit 6A is formed as a unit including the right side surface, but is not limited thereto, and may be formed as a unit including the left side surface, for example. The terminal unit 6B is a unit including the terminal unit 20. The positioning unit 6C is a unit that includes a protrusion 41 for performing positioning.

  A plurality of connection holes 6a are formed on each side surface of the end unit 6A, the terminal unit 6B, and the alignment unit 6C. The dimensions of the connection holes 6a provided in each unit and the distance between adjacent connection holes 6a have a common dimension and distance. Connection pins 61 having connection portions at both ends are inserted into the plurality of connection holes 6a. Thereby, each of the end unit 6A, the terminal unit 6B, and the positioning unit 6C is freely connected by the connection pin 61.

  FIG. 11 is a schematic diagram showing a connection example of each unit in FIG. In the example of FIG. 11, an end unit 6A, two terminal unit 6B, and a positioning unit 6C are connected. For example, when the number of contacts 11, 11,... Of the circuit board 3 is larger than the number of terminals 21, 21,... Provided on the terminal unit 6B, as shown in FIG. The socket 6 is formed by connecting a plurality of terminal unit 6B.

  As described above, in the third embodiment, the number of terminals 21, 21,... Of the socket 6 can be made to correspond to the number of contacts 11, 11,. ,... Can be formed according to the number of sockets. .. And the notch 31 provided on the circuit board 3, the positions of the contact 10 and the notch 31 on the circuit board 3 are changed by rearranging the connections of the units. A corresponding socket 6 can be formed.

  As described above, in the third embodiment, the socket 6 is configured by the end unit 6A including the side surface and the terminal unit 6B including the terminal unit 20, and the end unit 6A and the terminal unit 6B are combined. Formed. Thus, the sockets 6 can be formed in accordance with the number of contacts 11, 11,... Provided on the contact portions 10 of the circuit board, so that the socket 6 can be used regardless of the type of the circuit board 1. Testing can be performed.

  In addition, the socket 6 further includes a positioning unit 6C including a protrusion 41, and the end unit 6A, the terminal unit 6B, and the positioning unit 6C are formed in combination, so that the notch 31 is formed on the circuit board. It is possible to cope with the case where it is provided.

Embodiment 4 FIG.
Next, a fourth embodiment of the present invention will be described. When the contact portions 10 in the circuit boards 1, 3, and 3A according to the first to third embodiments are used only during the inspection process, the circuit boards 1, 3, and 3A are mounted on an actual product. Sometimes not used. Therefore, if the circuit boards 1, 3, and 3A are mounted on a product in a state where the contact portion 10 is exposed, careless contact such as a short circuit between the contacts 11 occurs, and there is a possibility that a failure occurs in the product. .

  Therefore, in the fourth embodiment, careless contact with the contact portions 10 on the circuit boards 1, 3, and 3A is prevented. Hereinafter, the circuit board 3A described in the second embodiment will be described as an example. In the following description, configurations common to the first to third embodiments are denoted by the same reference numerals, and detailed description is omitted.

  FIG. 12 is a schematic diagram for describing mounting of the circuit board 3A according to the fourth embodiment on a product. As shown in FIG. 12, in the circuit board 3A, the contact portions 10 are provided on the convex portions 3a. On the other hand, an accommodating portion 101 for accommodating the convex portion 3a of the circuit board 3A is formed in the housing 100 of the product. The accommodating portion 101 is formed, for example, by a hole having a depth such that the entire contact portion 10 provided on the protruding portion 3a of the circuit board 3A is covered.

  When the circuit board 3A is mounted on a product, the protruding portion 3a is housed in the housing 101 of the housing 100. Thereby, the contact portion 10 provided on the protruding portion 3a is covered by the housing 100, so that contact with the contact portion 10 is prevented. When the circuit board 3A is mounted on a product, the circuit board 3A is fixed to the housing 100 by a fixing member such as a screw (not shown). Thereby, the circuit board 3A is more reliably fixed to the housing 100.

  It should be noted that unlike the circuit board 1 according to the first embodiment and the circuit board 3 according to the second embodiment, the contact portion 10 is not provided with the convex portion 3a, but is provided on the periphery of the substrate. In this case, the contact portion 10 is housed in the housing 100 so as to be sandwiched by the housing 100 of the product. This also allows the contact portion 10 to be covered by the housing 100, thereby preventing contact with the contact portion 10 and more reliably fixing the circuit board 1 or 3 to the housing 100.

  As described above, according to the fourth embodiment, when the circuit boards 1, 3, and 3A are mounted on a product, the contact portions 10 of the circuit boards 1, 3, and 3A are covered with the housing 100 of the product. Therefore, careless contact with the contact portion 10 can be prevented.

  Although the first to fourth embodiments have been described above, the present invention is not limited to the above-described first to fourth embodiments, and various modifications and applications can be made without departing from the gist of the present invention. It is. For example, in the first to fourth embodiments, the contact portions 10 are provided on the circuit boards 1, 3, and 3A, and the sockets 2, 4, and 6 having the terminal portions 20 are provided on the inspection device. It is not limited to this example.

  Specifically, a connection terminal or the like having a contact portion may be provided on the inspection device, and a socket to which the connection terminal is connected may be provided on the circuit board. FIG. 13 is a schematic diagram illustrating an example in which a connection terminal 201 is provided on an inspection apparatus and a socket 202 is provided on a circuit board 200. As shown in FIG. 13, the inspection apparatus is provided with a connection terminal 201 having a contact portion 10 including contacts 11, 11,. The circuit board 200 is provided with a socket 202 to which the connection terminal 201 is connected. The socket 202 is formed with a terminal portion 20 including terminals 21, 21,... Corresponding to the contact portion 10 of the connection terminal 201.

  1, 3, 3A, 200 circuit board, 1a bottom, 1b side, 2, 4, 6 socket, 2a insertion slot, 2b, 2c inner wall, 3a convex shape part, 6A end unit, 6B terminal unit, 6C alignment Unit, 6a connection hole, 10 contacts, 11 contacts, 20 terminals, 21 terminals, 31 notches, 41 protrusions, 61 connection pins, 100 housing, 101 housing, 201 connection terminals, 202 socket.

Claims (5)

An inspection system including a circuit board to be inspected and an inspection device that inspects a state of a signal on the circuit board,
The circuit board,
Having a contact portion composed of one or more contacts arranged in a peripheral portion,
The inspection device,
A socket having one or more terminals corresponding to the one or more contacts, and a socket having at least one side open;
An inspection system, wherein the socket is fitted to the circuit board such that the contact portion and the terminal portion are in contact with each other.   The inspection system according to claim 1, wherein the socket is fitted to the circuit board such that a side surface of the socket is along a side surface of the circuit board. The circuit board,
It further has a notch,
The socket is
The inspection system according to claim 1, further comprising a protrusion at a position corresponding to the notch. The socket is
An end unit including the side surface, and a terminal unit including the terminal unit,
The inspection system according to any one of claims 1 to 3, wherein the end unit and the terminal unit are formed in combination. The socket is
Further comprising an alignment unit including the protrusion,
The inspection system according to claim 4, wherein the end unit, the terminal unit, and the positioning unit are formed in combination.

Images