JP2609860B2 - Printed circuit board inspection jig pin - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention is arranged on a printed board inspection jig, and performs an electrical connection between a probe pin of an inspection apparatus and a board contact. More particularly, the present invention relates to a printed board inspection jig pin suitable for electrical connection between an inspection device and a printed board having contacts arranged at a pitch other than a predetermined pitch.

(Prior art) Conventionally, for example, contacts such as ICs are standardized to be formed at a predetermined pitch of 0.1 inch (2.54 mm).
Many probe pins are arranged at the predetermined pitch.

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

That is, the bottom board 1 installed on the inspection device 20 having a large number of probe pins 21 arranged at a predetermined pitch of 0.1 inch is made of a material such as acrylic, polycarbonate or the like. , A large number of through holes 1a are formed.

On the upper part of the bottom board 1, a top board 3 supported by a plurality of columns 2 is arranged. The top board 3 is made of a material, for example, acrylic, polycarbonate, or the like.
A plurality of through-holes 3a are formed corresponding to the position of 31.

Then, the through hole 3a of the top board 3 and the bottom board 1
The printed circuit board inspection jig pins 4 are arranged between the through holes 1a, and the probe pins 21 of the inspection device 20 and the contacts 31 of the printed circuit board 30 are electrically connected to perform measurement.

The printed board inspection jig pin 4 is made of a material such as Be.
It is composed of a round bar having a diameter of, for example, 1.0 mm to 2.0 mm, which is made of Cu or the like and whose surface is plated with, for example, Ni or Rh. The lower end of the printed circuit board inspection jig pin 4 is a measuring device side connecting portion 4a formed in an inverted conical shape, and the upper end is formed in a conical shaped printed circuit board side. The connection portion 4b is provided. Therefore, the measuring device side connection portion 4a
And the printed circuit board side connection part 4b are arranged on the same axis.

In the printed board inspection jig described above, the probe pin
Even when the pitch of the contact 21 and the pitch of the contact 31 are different, the electric connection between the probe pin 21 and the contact 31 can be obtained by arranging the printed circuit board inspection jig pin 4 between the probe pin 21 and the contact 31 at an angle. The connection is established and measurement is possible.

(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 formed at a pitch smaller than a predetermined reference pitch. In the conventional printed circuit board inspection jig pin described above, a predetermined reference pitch is different, for example, in the case of a substrate or the like in which many contacts are continuously formed at a pitch smaller than the predetermined reference pitch, a single rod-shaped There is a limit in arranging the pins for a printed board inspection jig composed of a body obliquely, and there is a problem that measurement cannot be performed.

The present invention has been made in view of such a conventional situation, and is intended for test measurement even on a substrate or the like in which a large number of contacts are continuously formed at a pitch different from a predetermined reference pitch, for example, a pitch smaller than the predetermined reference pitch. It is an object of the present invention to provide a printed circuit board inspection jig pin capable of performing the following.

[Structure of the Invention] (Means for Solving the Problems) That is, according to the present invention, a bottom board provided with through holes at a predetermined pitch and a top board provided above the bottom board are penetrated. A printed circuit board inspection jig pin for electrically connecting a probe pin of an inspection device provided below the bottom board and a contact point of a printed circuit board provided above the top board; A pin body disposed so as to penetrate a through hole provided in the top board corresponding to the through hole of the bottom board, and a lower end portion serving as a probe pin side contact portion that contacts the probe pin; A conductive member provided to extend laterally from the pin main body above the top board; and a position on an axis different from the probe pin side contact portion. A printed board side contact portion provided to protrude upward from the conductive member, and a top board provided to protrude downward from the conductive member corresponding to the printed board side contact portion. And a fixing projection inserted into the through-hole provided in.

In addition, the pin for the printed circuit board inspection jig is made of Be
It is characterized by being made of Cu, and further has Ni or Rh on the surface.
Characterized by being subjected to a plating process.

(Operation) In the pin for a printed board inspection jig of the present invention, the contact portion with the probe pin and the contact portion with the contact of the printed board are located on different axes.

Therefore, even in a printed circuit board or the like having a large number of contacts formed continuously at a pitch different from the predetermined reference pitch, for example, a pitch smaller than the predetermined reference pitch, these contacts and an inspection positioned on a different axis from the contacts. A test measurement can be performed by electrically connecting the probe pins of the device.

Also, since there is no need to arrange the pins diagonally, the pins and the like are not forced, and the position of the contact portion on the printed circuit board side is fixed by the fixing projection, so that the electrical connection can be easily and reliably made. Connection can be made and good test measurements can be made.

(Example) Hereinafter, an example of a pin for a printed circuit board inspection jig of the present invention will be described with reference to FIG. 1 and FIG.

The printed circuit board inspection jig pin 11 of this embodiment includes a rod-shaped pin main body 12 and a plate-like member 13 fixed to the upper portion of the pin main body 12 by welding or the like.

The pin main body 12 is made of a material such as BeCu or the like, and the surface thereof is plated with, for example, Ni or Rh.
It consists of a round bar of 0mm to 2.0mm. The lower end of the pin body 12 is a measuring device-side connecting portion 12a formed in an inverted conical shape.

The plate-like member 13 is made of a material such as BeCu or the like, and is formed of a substantially rectangular plate having a surface plated with, for example, Ni or Rh. A print is fixed to the upper part of the pin main body 12 at a substantially right angle to the pin main body 12 at the fixing portion 13a, and is provided with a predetermined interval d in the horizontal direction from the axis of the pin main body 12 and protrudes upward in a triangular shape. The board-side connection part 13b is formed. In addition, a fixing protrusion 13c that protrudes downward is formed below the printed circuit board side connection portion 13b.

The printed board inspection jig pin 11 having the above-described configuration is arranged on a printed board inspection jig as shown in FIG.

That is, the bottom board 14 mounted on the inspection device 20 having a large number of probe pins 21 arranged at a predetermined pitch of 0.1 inch is made of a material such as acrylic, polycarbonate, or the like. Many through holes 14a are formed at a pitch.

Above the bottom board 14, a top board 16 supported by a plurality of columns 15 is arranged. The top board 16 is made of a material, for example, acrylic, polycarbonate, or the like.
A plurality of through holes 16a are formed corresponding to the positions of 31.

In addition, in a portion where the positions of the contacts 31 of the printed circuit board 30 are arranged at a pitch different from the predetermined pitch, in addition to the through holes 16a corresponding to the positions of the contacts 31, a predetermined pitch position near the through holes 16a is provided. That is, a through hole 16b is formed in the bottom board 14 at a position corresponding to the through hole 14a.

Then, the printed circuit board inspection jig pins 11 are arranged at positions where the contacts 31 of the printed circuit board 30 are arranged at a pitch other than the predetermined pitch, for example, at a pitch smaller than the predetermined pitch. That is, the pin main body 12 is disposed through the through hole 14a of the bottom board 14 from above the through hole 16b of the top board 16. Then, the fixing projection 13c is inserted into the through hole 16a corresponding to the position of the contact 31, and the printed circuit board side connection portion 13b is fixed at a position corresponding to the position of the contact 31 on the printed circuit board 30.

The distance d between the printed circuit board side connection portion 13b of the plate member 13 and the axis of the pin main body 12 is set in advance from a predetermined pitch of the contacts 31 in accordance with the offset amount.

Further, at the site where the contacts 31 of the printed circuit board 30 are arranged at a predetermined pitch, the printed circuit board inspection jig pins 17 similar to the above-described conventional printed circuit board inspection jig pins are arranged.

The printed circuit board inspection jig pin of this embodiment having the above configuration
In 11, electrical connections can be made between the contacts 31 arranged on the printed circuit board 30 at a pitch different from the predetermined pitch of 0.1 inches, for example, at a smaller pitch than the predetermined pitch, and the probe pins 21 of the inspection device 20.

In the above-described embodiment, the printed board side connection portion 13b is formed by the plate-shaped member 13, and the printed board side connection portion 13b is arranged on a different axis from the measurement device side connection portion 12a of the pin body 12. The present invention is not limited to such an embodiment.However, for example, the pin body 12 is formed into a bent shape, and how to arrange the printed circuit board side connection portion 13b and the measurement device side connection portion 12a on different axes. Of course, it is possible.

[Effects of the Invention] As described above, in the pin for a printed board inspection jig of the present invention, a substrate on which a large number of contacts are continuously formed at a pitch different from a predetermined reference pitch, for example, a pitch smaller than the predetermined reference pitch. Also, test measurement can be performed.

Also, since there is no need to arrange the pins diagonally, the pins and the like are not forced, and the position of the contact portion on the printed circuit board side is fixed by the fixing projection, so that the electrical connection can be easily and reliably made. Connection can be made and good test measurements can be made.

[Brief description of the drawings]

FIG. 1 is a side view showing a printed circuit board inspection jig pin according to an embodiment of the present invention, and FIG. 2 is a side view showing a printed circuit board inspection jig provided with the printed circuit board inspection jig pin of FIG. FIG. 3 is a side view showing a conventional printed board inspection jig on which pins for a printed board inspection jig are arranged. 11 …… PCB inspection jig pin, 12 …… Pin body,
12a: connection part on the measuring device side, 13: plate-shaped member, 13b ... connection part on the printed circuit board side.

Claims (3)

(57) [Claims] 1. A probe of an inspection device provided so as to penetrate a bottom board provided with through holes at a predetermined pitch and a top board provided above the bottom board, and provided below the bottom board. A pin for a printed board inspection jig for electrically connecting a pin and a contact of a printed board provided above the top board, wherein the through hole of the bottom board and the top board corresponding to the through hole of the bottom board. A pin body disposed so as to penetrate a through hole provided at a lower end thereof and having a probe pin side contact portion contacting the probe pin, and extending laterally from the pin body above the top board And a conductive member provided so as to protrude upward from the conductive member so as to be located on a different axis from the probe pin side contact portion. And a fixing projection, which is provided so as to protrude downward from the conductive member and is inserted into a through hole provided in the top board, corresponding to the printed board side contact portion. A pin for a printed circuit board inspection jig, comprising: 2. The printed circuit board inspection jig pin according to claim 1, wherein the material is made of BeCu. 3. The printed circuit board inspection jig pin according to claim 1, wherein the surface is plated with Ni or Rh.