JPH08264701A - Plating jig for multipin element - Google Patents

Abstract

PURPOSE: To put pins of a multipin element and a conductive contact in continuity without fail and also to enable repeated use of a plating jig by a method wherein the pin is inserted into a hole of an insulative main body of the plating jig, the pin and an electrification terminal are put in continuity through a conductive compression coil spring and the contact and electrolytic plating is applied to the pin. CONSTITUTION: A plating jig has an insulative main body 2 and a presser 3 of an element pressing body and holds PGA 1 between them. The main body 2 is provided with holes 4 in the same number as pins 1a of the PGA 1 and each hole is constituted of a small-diameter part 4a on the side of insertion of the pin 1a and a large-diameter hole part 4b on the side opposite to the foregoing. A compression coil spring 7 and a ball 8 as a conductive contact having a larger diameter than the small-diameter hole part 4a are inserted into the large-diameter hole part 4b. Next, the PGA 1 is pressed against the main body 2 by the presser 3 and set thereon. Thereby the fore end of the pin 1a is brought into contact with the ball 8 with a contact pressure corresponding to the amount of deflection of the compression coil spring 7. Accordingly, contact is ensured between an etching plate 5 and the pin 1a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-pin element plating jig, and more particularly to an LS such as PGA (Pin Grid Array).
The present invention relates to a plating jig for a multi-pin element suitable for use in the manufacturing process of I.

[0002]

2. Description of the Related Art Conventionally, in a manufacturing process of a multi-pin element such as PGA, there is a step of electrolytically plating a pin and a pattern with gold. As a plating jig used in the plating process, there is, for example, one using the conductive terminal board 11 partially shown in FIG.

In the conductive terminal board 11 of FIG. 5, 0.2
mm thick etching material (KOVAR, SUS304
And the like) and its conductive terminal board 11
, A plurality of clamp holes 12 made up of large and small holes communicating with each other are provided corresponding to each pin 1a of the PGA 1 to be plated. When performing plating, the tip of the pin 1a is inserted into the large hole 12a of the clamp hole 12, and then the pin 1a is inserted into the small hole 12b as shown in FIG. In this way, all the pins 1a are clamped by the small holes 12b of the clamp holes 12, and the conductive terminal board 1
1 was energized for plating.

However, in the plating by the conventional plating jig described above, when the pin 1a is pulled out from the small hole portion 12b to remove the conductive terminal plate 11, the shape of the edge of the small hole portion 12b is easily deformed. However, there is a problem in that the conductive terminal plate 11 cannot be reused when it is deformed.

[0005]

SUMMARY OF THE INVENTION In view of the above problems of the prior art, the main object of the present invention is to provide a plating jig for a multi-pin element that can be repeatedly used.

[0006]

According to the present invention, such an object is to provide a multi-pin element plating jig for plating each pin of a multi-pin element having a plurality of standing pins. , An insulating main body having a plurality of holes for coaxially receiving the tips of the plurality of pins, and the multi-pin element held in a state in which the tips of the pins are inserted into the holes by a predetermined amount. In order to do so, an element pressing body that presses the side of the multi-pin element that is opposite to the side on which the pin is provided, a conductive compression coil spring that is held in the hole so that it can expand and contract in the axial direction, and the holding state. A conductive contact body provided at one end of the compression coil spring so as to come into contact with the tip of the pin with an elastic biasing force of the compression coil spring, and a plating current-carrying terminal that contacts the other end of the compression coil spring. Characterized by having It is achieved by providing a plating jig for a multi-pin element.

[0007]

According to this structure, by inserting the pin of the multi-pin element into the hole of the insulating body against the elastic biasing force of the compression coil spring, the conductive contact body is elastically attached to the tip of the pin. Since the pin and the energizing terminal during plating are electrically connected to each other via the conductive compression coil spring, the energizing terminal during plating can be energized to perform electrolytic plating on the pin. Plating is completed by setting the hole diameter sufficiently larger than the outer diameter of the pin because the pin can be energized simply by elastically contacting the conductive contact body provided on the compression coil spring. Do not damage each part when pulling out the pin later.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view showing a multi-pin element plating jig to which the present invention is applied.
The plating jig used for A1 is shown. As shown in FIG. 1, the present plating jig has an insulating main body 2 and a pressure presser 3 as an element pressing body, and PGA 1 is sandwiched between them for use.

The main body 2 is provided with the same number of holes 4 as the pins 1a of the PGA 1 so as to be able to simultaneously receive all the tips of the pins 1a, and the four corners on the front surface side on which the PGA 1 is mounted are arranged. An L-shaped guide block 2a for positioning the PGA 1 is provided in a protruding manner. Further, as also shown in FIG. 2 showing an enlarged cross section of a main part, an etching plate 5 and a plate cover 6 as current-carrying terminals during plating are laminated in this order on the back surface of the main body 2. The main body 2 for sandwiching and fixing the etching plate 5 between the main body 2 and
The etching plate 5 is screwed on.

The pressure retainer 3 is for urging and fixing the PGA 1 mounted on the main body 2 toward the main body 2 side, and holds the peripheral portion of the upper surface of the PGA 1 and a part of each side surface. It is formed so that it can be fixed to the main body 2 by screwing a fixing screw inserted in a proper place into a screw hole provided corresponding to the main body 2.

As shown in FIG. 2, the hole 4 of the main body 2 penetrates in the thickness direction, and has a small-diameter hole portion 4a provided on the side where the pin 1a is inserted, and the small-diameter hole portion 4a to the pin. 1
Large-diameter hole portion 4 provided on the side opposite to the side where a is inserted
b. A compression coil spring 7 is coaxially received in the large diameter hole portion 4b, and a diameter between the small diameter hole portion 4a and one end of the compression coil spring 7 is larger than that of the small diameter hole portion 4a. The sphere 8 as a conductive contact has been refurbished.
Further, the other end of the compression coil spring 7 is in contact with the etching plate 5 laminated on the back surface of the main body 2, and the ball 8 is elastically contacted with the shoulder portion of the small diameter hole portion 4a to some extent in an initial stage. A compression coil spring 7 is housed in the hole 4 with a load.

The etching plate 5 has an opening 5a slightly smaller than the inner diameter of the compression coil spring 7 in the hole 4.
The plate cover 6 is also provided with a through hole 6a coaxially with the hole 4. As a result, the hole 4 penetrates in the axial direction, and the flow of the plating solution can be improved.

In the plating jig thus constructed, when the PGA 1 is set so as to be pressed against the main body 2 by the pressure presser 3, as shown in FIG.
Since the tip of the pin 1a comes into contact with the compression coil spring 7 and the compression coil spring 7 contracts, the ball 8 comes into contact with the tip of the pin 1a with a contact pressure corresponding to the amount of deflection of the compression coil spring 7.

Therefore, the etching plate 5 and the pin 1a
Are electrically connected to each other in a reliable contact state, and the electroplating can be performed on the pin 1a by energizing the etching plate 5. After the plating is completed, the PGA 1 is removed by removing the pressure presser 3 from the main body 2.
Can be separated, and the compression coil spring 7 can return to the initial state by the restoring force.

In this embodiment, a taper surface 4c is formed at the peripheral edge of the opening of the small-diameter hole 4a on the side where the pin 1a is inserted, the taper surface 4c expanding outward. As a result, the pin 1a is inserted into the hole 4
The pin 1a can be suitably guided when it is inserted into the.

The elastic force of the compression coil spring 7 causes the ball 8 to move.
Since the pin is brought into contact with the pin 1a, it is acceptable even if the relationship between the pin 1a and the hole 4 does not completely match due to the tolerance. For example, the axis of the pin 1a may be displaced from the hole 4 in the radial direction, or the length of the pin 1a may be different from that of the hole 4 in the height direction, or the pin 1a may be bent and the axis may be inclined. However, it is possible to appropriately absorb them by the deflection of the compression coil spring 7 and ensure a reliable contact state between the tip of the pin 1a and the ball 8 in any case.

Further, by changing the spring constant and the amount of deflection of the compression coil spring 7, it is possible to adjust the contact pressure which affects the conductivity, and in particular the contact pressure can be easily increased.

FIG. 4 shows a second embodiment of the present invention.
It is a figure corresponding to the said FIG. 2, the same code | symbol is attached | subjected to the part similar to the said Example, and the detailed description is abbreviate | omitted. In the second embodiment, a member corresponding to the main body 2 is formed by stacking a thick plate 9a and a thin plate 9b on each other.

As shown in the figure, a large-diameter hole 4b is formed in the thick plate 9a and a small-diameter hole 4a is formed in the thin plate 9b, and a sphere 8 is formed at the edge of the small-diameter hole 4a of the thin plate 9b. Contact elastically, so that the ball 8 and the compression coil spring 7 can be received in the large-diameter hole 4b as in the above-described embodiment. The second embodiment also has the same effects as the first embodiment.

[0021]

As described above, according to the present invention, when the multi-pin element is attached to or detached from the plating jig, the plating jig is not deformed, the plating jig can be repeatedly used, and the attachment / detachment is easy. Therefore, workability can be improved. In addition, since the tip of the pin and the conductive contact body make elastic contact, the pin and the conductive contact body can be securely attached even if there is some variation in the pin such as misalignment with the hole, height difference, and tilt. It is possible to secure good continuity. Further, the contact pressure that affects the conductivity can be easily adjusted by changing the spring constant and the amount of deflection.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a multi-pin element plating jig according to the present invention.

FIG. 2 is an enlarged side cross-sectional view of a main part of a plating jig before a pin is brought into contact with a conductive contact body.

FIG. 3 is a view corresponding to FIG. 2 showing a state where a pin is brought into contact with a conductive contact body.

FIG. 4 is a diagram corresponding to FIG. 2 showing a second embodiment.

FIG. 5 is a perspective view of a main part of a conventional plating jig.

FIG. 6 is a partially enlarged plan view showing a state in which a pin of a conventional plating jig is clamped.

[Explanation of symbols]

 1 PGA 1a Pin 2 Main body 2a Guide block 3 Pressure holder 4 Hole 4a Small diameter hole 4b Large diameter hole 4c Tapered surface 5 Etching plate 5a Opening 6 Plate cover 6a Through hole 7 Compression coil spring 8 Ball 9a Thick plate 9b Thin plate 11 Conductive terminal board 12 Clamp hole 12a Large hole 12b Small hole

Claims (1)

[Claims] 1. A multi-pin element plating jig for plating each pin of a multi-pin element having a plurality of standing pins, which can receive the tip ends of the plurality of pins coaxially. The insulating main body provided with a plurality of holes and the side of the multi-pin element provided with the pin to hold the multi-pin element in a state in which the tip portion of the pin is inserted into the hole by a predetermined amount. An element pressing body that presses the opposite sides, a conductive compression coil spring held in the hole so as to be able to expand and contract in the axial direction, and an elastic biasing force of the compression coil spring at the tip of the pin in the held state. A plating jig for a multi-pin element, comprising a conductive contact body provided at one end of the compression coil spring so as to abut, and a current-carrying terminal for plating that comes into contact with the other end of the compression coil spring.