JPS5824938Y2 - plating jig - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a plating jig, and particularly relates to an improvement of a plating jig used in electroplating.

As shown in Fig. 1 and Fig. 2, as →U of the conventional polishing jig, there are screws 2 for energizing and holding the plated object such as the board 1.
A, a bracket 3a for holding the screw 2, and a bracket mounting bar 4 are integrally formed of metal, and required parts are insulated with an insulating material 5 such as resin.

=Generally, metal deposits and adheres to the plating jig during electroplating, resulting in loss of plating metal, so in order to prevent this, there is a contact point for attaching the object to be plated, that is, screw 2a, which conducts electricity to the object to be plated.
The entire jig is covered with an insulating material 5, leaving only the jig exposed.

For this reason, when electroplating is repeatedly used with the same jig, metal gradually accumulates and adheres to the screw 2a, resulting in a so-called "flower blooming" state, which prevents the screw 2a from turning and reaches the usage limit of the plating jig. cormorant.

In order to solve this problem, as shown in FIG.
The screw 2b is surrounded by a hard resin such as polycarbonate, the bracket is made of an insulating material for fixing the screw 2b and electrically insulating it, and the tip of the electrode 6 is covered with a packing 7 having elasticity and electrical insulation. A coating jig was devised in which the covered electrode 6 and the plating solution were decomposed.

However, as shown in FIG. 4, by tightening the screw 2b, internal stress is generated in the gasket 7 for sealing, so the gasket 7 is provided with a gasket protrusion 8 that protrudes from the tip of the electrode 6 by one minute. must be used.

Therefore, if the length l is even slightly too long, the seal protrusion 8
is bent toward the inside of the electrode 6 as shown in Fig. 5, and if conduction cannot be obtained between the insertion housings or the length l is too short, the seal 7 will have the necessary internal stress (elasticity) for sealing. sex)
is not obtained.

Therefore, determining the length l was delicate and difficult.

Furthermore, if the seal 7 deteriorates and loses its elasticity even slightly, the seal will leak, the screw 2b will become in a "blooming" state, and the seal 7 may break, causing the electrode 6 to immediately reach its usage limit. Ta.

The purpose of the present invention is to provide a menking jig that solves the drawbacks of such conventional jigs.

In other words, according to the present invention, a fixed electrode for holding the object to be plated and supplying electricity to the object to be plated, a protruding pin electrode that can move forward and backward, and a spring for returning the pin electrode between both electrodes are installed inside the surrounding area. A mending jig is obtained which is characterized by comprising a screw covered with an insulating material, a bracket made of an insulating material for holding the screw, and a packing having elasticity and insulating properties on the tip end surface of the screw.

Embodiments of the present invention will now be described in detail with reference to FIGS. 6 and 7.

The structure of the present invention will be explained with reference to FIG. 6. A fixed electrode 9 is connected to an insulated lead wire 10 from a bracket mounting bar 4, and is fixed to the blind side of an inner cylinder 11 bored through the central axis of a screw 2c.

On the tip side of the screw 2c, a pin electrode 13 formed in a stepped shape that protrudes from the screw tip surface 12 and can move forward and backward is inserted into the cylinder 11 so as not to come off from the tip of the screw 2c. There is always a pin electrode 1 between the electrode 13 and
3 is pushed out, and the spring 14 is held in a depressed state for making a conductive connection.

A punch 7 having elasticity and insulating properties is attached so as to be slidably attached to the outer periphery of a pin electrode 13 protruding from the screw tip surface 12, and the pin tip 15 is made to protrude slightly from the seal 7.

The screw 2c is held by a bracket 3c.

Next, the operation of the mending jig of the present invention will be explained with reference to FIG.

The board 1 is inserted between the bracket mounting bar 4 and the bracket 3c, and the screw 2c is tightened. The pin electrode 13 begins to retreat into the screw 2c due to the force of the tightening of the screw 2c.

At this time, since the pin tip 15 of the pin electrode 13 is protruding from the gasket 7, the pin tip 15 comes into contact with the substrate 1 first, so the gasket 7 is inserted between the pin tip 15 and the substrate 1. Never.

Further tighten the screw 2c, and stop tightening at the position where the puncture 7 is compressed and sufficiently sealed.

By tightening the screw 2c, the spring 14 is compressed, so pressure is transmitted to the pin electrode 13, and pressing force is applied to the substrate 1 side to energize the fixed electrode 9, the spring 14, the pin electrode 13,
The circuit board 1 is energized.

The board 1 is tightened by pressure and pin electrode 1.
It is held by the pressing force of 3.

Note that not only electroplating but also electrolysis that employs the reverse action of electroplating can cause deterioration of the contact portion that maintains current flowing through the object to be electrolyzed, so it can also be applied to electrolytic jigs.

As described above, according to the present invention, it is easy to determine the length of the packing, and the sealing and energization between the electrode and the substrate can be ensured, and the life of the electrode can be extended.

[Brief explanation of drawings]

Figure 1 is a side view of a general plating jig, Figures 2 and 3 are enlarged sectional views of the conventional electrode section with the board attached, and Figure 4 is a side view of a general plating jig.
The figure is an enlarged cross-sectional view of the conventional electrode part without the need for a board, FIG. FIG. 3 shows enlarged cross-sectional views of the electrode portion according to the present invention in a state in which it is not attached and a state in which it is attached. 1... Board, 2a, b, c... Screws,
3a,b. C... Bracket, 4... Bracket mounting bar 5... Insulating material, 6... Electrode,
7...Pounding padskin, 8...Putskin protrusion, 9
...Fixed electrode, 1o...Bent wire, 11...
...Inner circumference, 12...Screw tip surface, 13...
...Pin electrode, 14... Spring, 15...
...pin tip.

Claims (1)

[Scope of utility model registration request] A fixed electrode for holding the object to be plated and supplying electricity to the object to be plated, a protruding pin electrode that can move forward and backward, and a spring for returning the pin electrode between both electrodes are installed, and the surrounding area is covered with an insulating material. 1. A plating jig comprising: a pre-formed screw; a bracket made of an insulating material for holding the screw; and a packing having elasticity and insulating properties on the tip end surface of the screw.