JPH0656401B2 - Inspection equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention provides an inspection apparatus for making electrical connection with a contact of an adjacent substrate at a pitch narrower than the pitch of adjacent measurement pins. To do.

(Prior Art) Conventionally, for example, a contact point of an IC or the like is 0.1 inch (2.54
mm) is standardized to be formed at a predetermined pitch, and a large number of measuring pins are arranged at the predetermined pitch in an inspection device that performs test measurement of a printed circuit board.

When the test measurement is performed on the printed circuit board on which the contacts are formed at a pitch other than the predetermined pitch, the test measurement is performed using a printed circuit board inspection jig as shown in FIG. 5, for example.

Such a printed board inspection jig has a large number of through holes 2a arranged at a pitch of the measuring pins 1 arranged at a predetermined pitch of 0.1 inch in the board inspection device, and is made of, for example, acrylic, polycarbonate, or the like. A pin side plate member 2 and a through hole 4a which is arranged above the pin side plate member 2 and which corresponds to the position of the contact 3a formed on the printed circuit board 3. The substrate side plate member 4 is configured, and the through hole 2a and the printed circuit board inspection jig pin 5 inserted into the through hole 4a are configured.

The printed circuit board inspection jig pin 5 has, for example, a length of 8
The pin body 5a has a uniform thickness of 1.5 mm and a diameter of about 1.55 mm, and has a projecting taper portion at the top end, for example, a length of 2.5 mm and a diameter of about 1.9 mm. The substrate-side connecting portion 5b having the diameter is provided, and the measuring pin-side connecting portion 5c which is recessed in a tapered shape is provided at the opposite end portion.

The printed circuit board inspection jig pin 5 is inserted into the through hole 4a from above the board side plate member 4 and then into the through hole 2a. At this time, the large-diameter board-side connecting portion 5b is provided with the through hole 4a.
The diameter is made larger, and for example, when the printed board inspection jig is lifted, the board-side connecting portion 5b becomes
The pin 5 for the printed circuit board inspection jig is prevented from falling off by being locked to the upper surface.

In the printed circuit board inspection jig having the above structure, even when the pitch of the measurement pins 1 and the pitch of the contacts 3a formed on the printed circuit board 3 are different, the printed circuit board inspection jig is provided between the measurement pins 1 and the contacts 3a. By arranging the tool pin 5 obliquely, the measurement pin 1 and the contact 3a are electrically connected to each other to enable measurement. Further, the printed circuit board inspection jig pin 5 can be easily attached and detached, and when measuring different types of printed circuit boards 3, only the board side plate member 4 having the through hole 4a corresponding to the contact 3a is used. It is configured so that it can be measured by exchanging it.

(Problems to be solved by the invention) However, in recent years, due to high integration, the pitch of the contacts formed on the substrate is often smaller than the reference pitch of the measurement pins of a predetermined inspection device. . In the conventional printed circuit board inspection jig described above, a large-diameter board-side connection portion that doubles as a board-side contact portion and a locking mechanism for the board-side plate member is provided at the board-side end of the printed-circuit board inspection jig pin. Since they are formed, the adjacent board-side connection parts come into contact with each other, and there is a limit to the measurement of the board where contacts are formed at a pitch smaller than the predetermined reference pitch. However, there is a problem that it is possible to measure up to a pitch of about 1.27 mm.

It is an object of the present invention to provide an inspection device that electrically connects with a contact of an adjacent substrate at a pitch narrower than the pitch of measurement pins of the adjacent inspection device.

(Means for Solving the Problem) In an inspection device including a printed circuit board inspection jig for electrically connecting the measuring pins arranged in a grid pattern at a predetermined pitch and the substrate contact, the printed circuit board inspection jig is The measuring pin side plate member having a large number of through holes arranged at the pitch of the measuring pin, the substrate side plate member having the through holes arranged corresponding to the contact position of the substrate, The pin body having a large diameter portion on the pin side, and the pin body slightly protruding from the side wall of the intermediate portion of the pin body so that the pin body can be pressed and inserted into the through hole of the measurement pin side plate member, and the pin body falls off from the pin side plate member. A pin for a printed circuit board inspection jig, comprising: Equipped with Inspection and wherein the.

The inspection apparatus according to claim 1, wherein the pin body has a diameter gradually increasing from the small diameter portion toward the large diameter portion.

The inspection device according to claim 1, wherein the tip of the large-diameter portion has a shape in which the outer portion has a smaller diameter toward the tip portion, and the inner portion has a concave recess.

(Operation) According to the inspection device of the present invention, the printed circuit board inspection jig pin has a small diameter portion on the substrate under test side, and there is no large diameter portion. Therefore, even with a substrate formed with adjacent contacts at a small pitch, Test measurements can be made.

Further, since it is locked to the pin side plate member by the locking mechanism provided so as to slightly protrude from the intermediate portion side wall of the pin body so that it can be press-inserted into the through hole of the measurement pin side plate member,
It is possible to prevent the pins for the printed circuit board inspection jig from coming off when the printed circuit board inspection jig is lifted, and moreover, the end surface of the printed circuit board inspection jig pin on the measurement pin side is Since the measurement pin side connection part is formed by denting in a taper shape, for example, even when the board inspection jig pin obliquely contacts the measurement pin for measurement other than the predetermined pitch, It is possible to prevent the slippage and the electrical contact can be secured.

(Embodiment) An embodiment of the inspection apparatus of the present invention will be described below with reference to the drawings.

The printed circuit board inspection jig pin 10 shown in FIG. 2 includes a pin body 11 made of, for example, BeCu and having a surface plated with Ni, Rh, and the like, and a lock slightly protruding from the pin body 11. And the mechanism 12.

The pin body 11 has a total length of, for example, 82.5 mm, and a diameter of, for example, about 42.5 mm from the upper end is, for example, 0.77 mm.
21.5 mm from the lower end to a large diameter portion 11b having a diameter of, for example, 1.55 mm, and the diameter gradually increases from the small diameter portion 11a toward the large diameter portion 11b. Further, at the tip of the small diameter portion 11a, for example, 9
A substrate-side connecting portion 11c protruding in a taper shape of 0 degree or the like is formed, and a diameter of the outer peripheral portion is 1.8 mm at the tip of the large diameter portion 11b on the opposite side.
A measuring pin side connecting portion 11d is formed which is recessed in a taper shape of 4 mm, 90 degrees or the like.

Further, the locking mechanism 12 is, for example, 1 from the lower end of the pin body 11.
The protrusion is formed at a position of 0 mm over a width of 3 mm by, for example, knurling, and the outer peripheral diameter thereof is, for example, about 1.77 mm. The printed circuit board inspection jig pin 10 of the above mechanism is arranged on the printed circuit board inspection jig 15 shown in FIG.

The printed circuit board inspection jig 15 has a large number of through holes 17a arranged at the pitch of the measuring pins 16 arranged at a predetermined pitch of 0.1 inch in the inspection device, and is made of, for example, acrylic, polycarbonate or the like. Pin side plate member 1
7 and a through hole 19a which is arranged above the pin side plate member 17 and corresponds to the position of the contact 18a formed on the printed circuit board 18, and is made of, for example, acrylic or polycarbonate. Is equipped with.
The through holes 17a have a uniform diameter of 1.75 mm, and the diameter of the through holes 19a varies depending on the pitch of the contact points 18a, and at least the through holes 19a where the printed circuit board inspection jig pins 10 are arranged are The diameter is 0.97 mm.

The printed circuit board inspection jig pin 10 is inserted into the through hole 17a from below the pin side plate member 17, and
It is inserted into the through hole 19a corresponding to a. At this time, since the locking mechanism 12 slightly protrudes from the through hole 17a,
The lower portion of the printed circuit board inspection jig pin 10 is inserted so as to penetrate the through hole 17a, and after the insertion, the printed wiring board inspection jig pin 10 is locked to the upper surface of the pin side plate member 17 and the printed circuit board inspection jig pin 10 is inserted. Of the printed circuit board inspection jig 15 is prevented. Further, similarly, by pressing from the upper side, it can be removed from the printed circuit board inspection jig 15.

In this way, the printed circuit board inspection jig pin 10 arranged on the printed circuit board inspection jig 15 has the through holes 17 a and the through holes 19 a.
It is arranged obliquely with respect to a, and mainly the small diameter portion 11
The portion a is bent and the measurement pin 16 and the contact 18a are electrically connected to each other, and the test measurement of the substrate 18 is performed.

In the printed circuit board inspection jig 15 of this embodiment having the above-mentioned configuration, since there is no large-diameter portion in the board-side connecting portion, for example, 1.
Even with the board 18 on which the contact points 18a are formed at a small pitch of less than 27 mm, the test measurement can be performed without the adjacent printed board inspection jig pins 10 coming into contact with each other.

It should be noted that, as shown in FIGS. 3 to 4, the measurement pin side connection portion 11d has a shape in which the outer portion has a small diameter toward the tip portion, and the inner portion has a tapered concave shape, so that the measurement is performed. The measuring pin tip of the device can be used either in a protruding shape, in a concave shape, or in any shape. Also, the locking portion 12
Although it is formed by knurling, for example, a groove may be formed in the pin body and an O-ring or the like may be arranged in this groove.

EFFECTS OF THE INVENTION According to the inspection device of the present invention, the pitch of the inspection jig pins with the adjacent pins on the measured substrate side is smaller than the pitch with the adjacent pins on the measurement pin side. Test measurements of smaller substrate contacts can be made.

Further, since the measuring pin side plate member is locked to the pin side plate member by the locking mechanism provided so as to slightly protrude from the intermediate portion side wall of the pin main body so that the measuring pin side plate member can be transparently pressed and inserted,
It is possible to prevent the pins for the printed board inspection jig from coming off when the pudding board inspection jig is lifted up, and moreover, the end surface on the measurement pin side of the printed board inspection jig pins is Since the measurement pin side connection part is formed by denting in a taper shape, for example, even when the board inspection jig pin obliquely contacts the measurement pin for measurement other than the predetermined pitch, It is possible to prevent the slippage and the electrical contact can be secured.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing a printed circuit board inspection jig according to an embodiment of the present invention, FIG. 2 is a side view showing pins for the printed circuit board inspection jig, and FIGS. 3 to 4 are shown in FIG. The side view which shows the principal part of the modification of the pin for printed circuit board inspection jigs shown, 5th
FIG. 1 is a vertical sectional view showing a conventional printed circuit board inspection jig. 10 ... pin for printed circuit board inspection jig, 11 ... pin body, 11a ... small diameter part, 11b ... large diameter part, 12 ... locking mechanism, 15 ... printed circuit board inspection jig, 16 ... measurement Pin, 17 ... Pin side plate member, 17a ... Through hole, 18 ...
... Printed circuit board, 18a ... Contact, 19 ... Board side plate member, 19a ... Through hole.

Claims (3)

[Claims] 1. An inspection apparatus comprising a printed circuit board inspection jig for electrically connecting measuring pins arranged in a grid at a predetermined pitch and substrate contacts, wherein the printed circuit board inspection jig has a pitch of the measuring pins. A measurement pin side plate member having a large number of through holes arranged in a line, a board side plate member having a through hole arranged corresponding to the contact position of the board, and a small diameter portion on the board side and a large measurement pin side on the measurement pin side. A pin body having a diameter portion and a member for slightly protruding from the side wall of the intermediate portion of the pin body so that the pin body can be pressed and inserted into the through hole of the measurement pin side plate member, and prevents the pin body from falling off from the pin side plate member. A pin for a printed circuit board inspection jig, which includes: a stop mechanism; Characterized by Inspection equipment. 2. The inspection device according to claim 1, wherein the pin body has a diameter gradually increasing from the small diameter portion toward the large diameter portion. 3. The inspection apparatus according to claim 1, wherein the tip of the large-diameter portion has a shape in which the outer portion has a smaller diameter toward the tip portion and the inner portion is recessed in a tapered shape.