JPS5913250Y2 - Piece fastening structure in surface treatment hanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stopper structure in a hanger mainly for surface treatment of aluminum-based materials.

Conventionally, a hanger for surface-treating aluminum-based materials has a structure as shown in FIG.

That is, a plurality of pieces 3 are fixed to the surface of a piece fixing plate 2 fixed to a connecting rod 1 fixed to an electrolytic frame.

This piece 3 is made of aluminum alloy for corrosion resistance, and as shown in Fig. 2, the rear side is fixed with bolts 4 from the back side of the piece retaining plate 2, and the front side is open in a Y shape, and one side is clamped. One piece 5 serves as a fixing seat 6 for a bolt 7 on the other side.

The material to be treated 8 is pressed and clamped between the clamping piece 5 and the tip of the bolt 7.

In this case, if the pressing force of the bolt 7 is too strong or the clamping piece 5 becomes fatigued, the clamping piece 5 deforms to the position 5' as shown by the dashed line in FIG. 8
The upper end of the bolt 7 is also bent as shown at 8', and the contact between the tip of the bolt 7 and the surface of the workpiece 8 is no longer uniform, and a gap is formed in a part.

If there is a gap like this, the tip of the bolt 7 will also become alumite like the material to be treated 8, causing poor contact.

In order to solve this problem, the inventors of the present invention separately developed a method in which the tip of the bolt 7 is made of titanium material.

However, it has been found that there is also a problem in contact between the piece 3 and the piece stopper plate 2.

That is, the contact portion between the piece 3 and the piece retaining plate 2 and the bolt 4
Paint scum and the like tend to accumulate at the contact portions between the bridge 3 or the bolt 4 and the bridge retaining plate 2, resulting in poor contact at these locations and poor electrical conductivity.

The present invention is an improvement on the drawbacks of the locking structure of the hanger for surface treatment, and is characterized by interposing a titanium material inside the contact area between the piece and the locking plate. It is.

To explain the embodiment with reference to drawings, FIG. 3 is one example (hereinafter, parts with the same names as in FIGS. 1 and 2 are indicated by the same reference numerals). A titanium material 9 is embedded between the holes.

Since the titanium material 9 has electrical conductivity and is difficult to be anodized, if the piece 3 and the piece stopper plate 2 as well as the bolt 4 are
Even if paint scum, etc. accumulates on the contact area and causes poor contact,
The electrical conductivity between the piece retaining plate 2 and the piece 3 does not deteriorate.

The titanium material 9 may be simply embedded as shown in FIG. 3, but there are various other modifications.

That is, FIG. 4 shows the piece 3 using the titanium material 9 as a screw-in type.
It is screwed inside.

Of course, this may also be screwed into the hooking plate 2 side.

In FIG. 5, a titanium material 9 is screwed through the piece fixing plate 2 and its tip is embedded in the piece 3.

In FIG. 6, both ends of the titanium material 9 are jagged and embedded.

In FIG. 7, the tip of the titanium material 9 is made into a cap shape, and this is driven into the piece retaining plate 2 side.

Of course, this may also be reversed. The present invention is as described above, and is particularly applied to a hanger for surface treatment of aluminum materials to maintain good current conduction efficiency at all times, and its practical effects are extremely large.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional surface treatment hanger, Fig. 2 is a plan sectional view of the same piece, Fig. 3 is a plan sectional view of one embodiment of the present invention, and Figs. FIG. 1... Connecting rod, 2... Piece stopper plate, 3.
...Piece, 4...Bolt, 5,5...
... Holding piece, 6 ... Fixing seat, 7 ... Bolt, 8.8 ... Material to be treated, 9 ... Titanium material.

Claims (1)

[Scope of utility model registration request] A piece fixing structure in a hanger for surface treatment, characterized in that a titanium material is interposed inside the contact portion between the piece and the piece fixing plate.