JP2009150807A - Continuity inspection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a contact probe from being bent or damaged, in a continuity inspection device, even if a lid is closed by mistake. <P>SOLUTION: A table 3 on which a substrate 2 to be inspected is placed is moved up and down, and a lid 9 with a contact probe 8 is turnably supported through a hinge member 6 openably/closably. A regulation lever 23 is turnably supported around a turning center pin 24, and a cam pin 25 planted in the regulation lever 23 is fitted into a cam groove 21a on the table 3. When the table 3 is lifted, the regulation lever 23 is turned in the counterclockwise direction by a cam action by the cam groove 21a and the cam pin 25, and a regulation part 23a advances between upper and lower side distance rods 16, 15. The turning center pin 24 is fitted into a loose hole 20b formed to have a long hole shape extending slantingly in the vertical direction on a support member 20, and biased downward by a tensile coil spring 27. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a continuity inspection apparatus that inspects a continuity state of a circuit wired on a printed circuit board.

  Conventional continuity testing devices include those shown in FIGS. 5 and FIG. 6, the conventional continuity testing apparatus shown as a whole by reference numeral 101 has a table 3 that is moved up and down by driving the air cylinder 12 on which the substrate 2 to be inspected is mounted, and a back mounted on the base plate 4. A lid 9 is provided at the upper end of the face plate 5 via a hinge member 6 so as to be pivotable about a pivot 7 and a contact probe 8 for inspecting the substrate 2 to be inspected. The table 3 is supported by a pair of linear guides 11, 11 provided on the base plate 4 so as to be movable up and down, and an upper end surface of a mounting table 14 fixed to the table 3 via a fixed block 13 is covered with a cover. A mounting recess 14a for mounting the inspection substrate 2 is provided. Reference numerals 15 and 15 denote a pair of lower spacing holding rods erected on the left and right ends of the front portion of the base plate 4, which are provided on the left and right ends of the front portion of the lid 9 when the lid 9 is closed. The pair of upper spacing rods 16 and 16 come into contact with each other.

  In such a configuration, in order to inspect the continuity of the substrate 2 to be inspected, the lid 9 is rotated in the clockwise direction in FIG. Is mounted in the mounting recess 14a of the mounting table 14. When the substrate 2 to be inspected is placed, the lid 9 is rotated counterclockwise in FIG. 6 with the pivot 7 as the rotation center to close the lid 9. Thereafter, the air cylinder 12 is driven to advance the rod 12a, and the table 3 is raised to bring the tip of the contact probe 8 into contact with the part to be inspected of the inspected substrate 2 as shown in FIG. The continuity inspection of the substrate 2 to be inspected is performed via 8.

  In the conventional continuity testing apparatus described above, if the lid 9 is accidentally closed while the table 3 is raised without being lowered, the contact probe 8 is tilted as shown in FIG. There is a problem that the contact probe 8 is easily bent or damaged because of contact with the substrate 2.

  The present invention has been made in view of the above-described conventional problems, and the object of the present invention is to conduct a continuity test in which the contact probe does not bend or break even if the lid is accidentally closed. The device is in place.

  In order to achieve this object, the present invention includes a table on which a substrate to be inspected is placed and raised and lowered, and a contact probe that is rotatably supported so as to be in a closed state and an open state, and inspects the substrate to be inspected. In a continuity inspection apparatus that includes a lid provided, raises the table with the lid closed, and makes an inspection by bringing the substrate to be inspected into contact with the tip of the contact probe. A restricting member that rotates between a restricting position that restricts closing of the lid and a retracted position is provided, and the restricting member is rotated between the restricting position and the retracted position between the restricting member and the table. Cam means is provided.

  According to the present invention, in the invention described above, the regulating member is provided with a rotation center pin that is movably engaged in a vertical direction in a floating hole provided in the device fixing portion, and biases the rotation center pin downward. An urging means and a blocking member that prevents the movement of the restriction member to the restriction position by raising the table from a state where the table is lowered and the lid is closed.

  According to the present invention, when the table is raised, the lid cannot be closed by the restricting member even if the lid is accidentally closed, so that the contact probe is in contact with the substrate to be inspected in a tilted state. Therefore, the contact probe is not bent or damaged.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a continuity testing apparatus according to the present invention, FIG. 2 is a side view of the same, FIG. 3 is a side view of a state in which the lid is closed and the table is raised, and FIG. It is a side view which shows the state which has raised the table in the state which opened. In these drawings, the same or equivalent members described in the prior art shown in FIGS. 5 to 8 described above are denoted by the same reference numerals, and detailed description thereof is omitted as appropriate.

  1 and 2, the continuity test apparatus 1 includes support members 20 and 20 that function as device fixing portions erected on both left and right ends of the base plate 4, and an upper portion 20 a of the support member 20 is As shown in FIGS. 1 and 2, a groove 20c is formed that opens in the front-rear direction and the upper direction. Further, as shown in FIG. 2, a floating hole 20b formed in the shape of a long hole extending in a vertically inclined state in a side view penetrates the support member 20 left and right in the upper portion 20a of the support member 20. It is formed to do. As shown in FIG. 3, the floating hole 20 b is formed on an arc locus B centering on the point A of the upper distance holding rod 16 that functions as a blocking member described later.

  A cam block 21 is fixed to each of the left and right ends of the table 3, and the cam block 21 is provided with a cam groove 21 a formed in a long hole shape extending in the horizontal direction. Reference numeral 23 denotes a regulating lever formed in a substantially triangular shape when viewed from the side. The regulating lever 23 is advanced into one of the three corners and between the lower spacing rods 16 and 15, and the lid 9 is inadvertently moved. A restricting portion 23a for restricting the closing is projected. Further, at each of the other two corners of the restricting lever 23, a rotation center pin 24 engaged with the idler hole 20 b of the support member 20 and a cam pin 25 engaged with the cam groove 21 a of the cam block 21. The restriction lever 23 is sandwiched between the upper portions 20a of the support members 20, and is supported rotatably about a rotation center pin 24 as described later.

  Reference numerals 27 and 27 denote tension coil springs suspended between both ends of the rotation center pin 24 and the support member 20, and the rotation center pin 24 is connected to the floating hole 20b by the tensile force of the tension coil spring 27. The regulating lever 23 is positioned at the lower end, and is supported rotatably on the support member 20 with the rotation center pin 24 as a rotation center. That is, the cam pin 25 can rotate on a circular arc locus C around the rotation center pin 24.

  In such a configuration, when the table 3 is lifted from the state shown in FIG. 2 where the table 3 is lowered, the cam pin 25 that can rotate on the locus C moves in the left direction in the drawing along the cam groove 21a. The regulating lever 23 pivots counterclockwise about the pivot center pin 24 as a pivot center, and the regulating portion 23a advances between the upper and lower spacing rods 16 and 15 as shown in FIG. The position where the restricting portion 23a advances between the upper and lower spacing rods 16 and 15 is hereinafter referred to as a restricting position.

  On the other hand, when the table 3 is lowered from this restricting position, the cam pin 25 that can turn on the locus C moves in the right direction in the drawing along the cam groove 21a, so that the restricting lever 23 rotates the turning center pin 24. As shown in FIG. 2, the restricting portion 23 a is separated from the upper and lower spacing rods 16 and 15. The position where the restricting portion 23a is separated from the upper and lower spacing rods 16 and 15 is hereinafter referred to as a retreat position. The cam groove 21a and the cam pin 25 constitute cam means for rotating the regulating lever 23 counterclockwise or clockwise (between the regulating position and the retracted position) as the table 3 moves up and down. Yes.

  Next, a method for inspecting the continuity of the substrate 2 to be inspected by the continuity inspection apparatus 1 configured as described above will be described. First, the air cylinder 12 is driven and the rod 12a is moved backward to lower the table 3 as shown in FIG. The lid 9 is opened by rotating the lid 9 in the clockwise direction in the drawing with the pivot 7 as the center of rotation, and the substrate 2 to be inspected is placed on the placement recess 14 a of the placement table 14.

  Thereafter, the lid 9 is rotated counterclockwise in the figure with the pivot 7 as the center of rotation, so that the lower end of the upper spacing rod 16 is brought into contact with the upper end of the lower spacing rod 15 and the lid 9 is moved. close. In this state, the contact probe 8 is directed in the vertical direction without being inclined. Next, when the table 3 is lifted by driving the air cylinder 12 and moving the rod 12a forward, the regulating lever 23 reacts with the rotation center pin 24 as the rotation center by the cam action of the cam groove 21a and the cam pin 25. It slightly turns clockwise, and the tip of the restricting portion 23 a comes into contact with the point A of the upper spacing rod 16.

  By this contact, the counter lever 23 is prevented from rotating counterclockwise around the rotation center pin 24 as the rotation center. Therefore, when the table 3 is further raised, the rotation center pin 24 moves upward along the floating hole 20b provided on the locus B of the arc centered on the point A against the tensile force of the tension coil spring 27. Therefore, the regulating lever 23 rotates counterclockwise around the point A as the rotation center. Thus, since the rotation center pin 24 is movably engaged in the floating hole 20b, the regulation lever 23 does not become inoperative, so that the table 3 rises smoothly. When the table 3 reaches the upper limit, the driving of the air cylinder 12 is stopped, and the inspection portion of the substrate 2 to be inspected contacts the tip of the contact probe 8 as shown in FIG. Done.

  Next, the operation of closing the table 3 from the state in which the lid 3 is opened while the table 3 is raised will be described with reference to FIG. When the table 3 is raised and the lid 3 is opened, the lower end of the upper spacing rod 16 is separated from the upper end of the lower spacing rod 15. When the table 3 is raised, the regulating lever 23 rotates counterclockwise in the figure with the pivoting center pin 24 as the pivoting center due to the cam action of the cam groove 21a of the cam block 21 and the cam pin 25 of the regulating lever 23. The restricting portion 23a advances between the lower end of the upper interval holding rod 16 and the upper end of the lower interval holding rod 15, and the restricting lever 23 is positioned at the restricting position. Therefore, since the closing of the lid 3 is restricted by the restriction lever 23, the lid 3 cannot be closed when the table 3 is raised. For this reason, since the contact probe 8 does not come into contact with the substrate 2 to be inspected in a tilted state, the contact probe 8 is not bent or damaged.

It is a front view of the continuity test apparatus according to the present invention. It is a side view of the continuity test apparatus according to the present invention. In the continuity test apparatus according to the present invention, it is a side view showing a state in which a test is performed by closing a lid and raising a table. In the continuity test apparatus according to the present invention, it is a side view showing a state where the table is raised with the lid open. It is a front view of the conventional continuity inspection apparatus. It is a side view of the conventional continuity inspection apparatus. It is a side view which shows the state which is test | inspecting in the conventional continuity inspection apparatus. It is a side view which shows the state which closed the lid accidentally in the state which raised the table in the conventional continuity inspection apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Continuity test apparatus, 2 ... Board to be inspected, 3 ... Table, 6 ... Hinge member, 8 ... Contact probe, 9 ... Lid, 12 ... Air cylinder, 16 ... Upper space | interval holding rod (blocking member), 20a ... Sliding A hole, 21a ... a cam groove, 23 ... a control lever, 24 ... a rotation center pin, 25 ... a cam pin, 27 ... a tension coil spring.

Claims (2)

A table on which the substrate to be inspected is placed and raised and lowered;
A lid provided with a contact probe that is rotatably supported so as to be in a closed state and an open state and inspects a substrate to be inspected,
In the continuity inspection apparatus that performs the inspection by raising the table with the lid closed and bringing the substrate to be inspected into contact with the tip of the contact probe,
A regulating member that rotates between a regulating position that regulates closing of the lid and a retracted position as the table is raised and lowered;
A continuity inspection apparatus characterized in that cam means for rotating the regulating member between the regulating position and the retracted position is provided between the regulating member and the table. The regulating member is provided with a rotation center pin that is movably engaged in the up and down direction in a floating hole provided in the device fixing portion,
An urging means for urging the rotation center pin downward;
The continuity test according to claim 1, further comprising: a blocking member that prevents the movement of the restriction member to the restriction position by raising the table from a state where the table is lowered and the lid is closed. apparatus.

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