JPS642362B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in conventional spikes, studs and other anti-slip devices attached to the soles of shoes.

Conventional spikes, studs, and other anti-slip devices are prone to wear and tear due to contact with the ground, floor, etc. during use.
This resulted in the defect that it became unusable immediately. Therefore, the spikes, which are mainly made of steel,
Studs and other anti-slip devices are processed by bonding ultra-hard alloy chips to the tips that are likely to come into contact with the ground, etc., or by thermally spraying ceramic or new ceramic coatings. A method has been proposed in which the tip of the anti-slip tool is hardened to prevent wear and tear. However, all of these methods require expensive equipment and advanced technology, and therefore have the drawback of increasing the cost of the anti-slip device.

In the present invention, the body of the lightweight hard aluminum anti-slip tool is immersed in a dilute sulfuric acid solution and then left as is.
Relatively short time of 40 to 60 minutes, 8 to 10 degrees Celsius
It is relatively simple, requiring only a relatively high temperature of 12 to 20 volts and low voltage of 12 to 20 volts, and does not require advanced technology or equipment, making it relatively low cost and economical for mass production. Therefore, it was possible to provide an anti-slip tool having a desired ultra-hard aluminum oxide film with high properties.

The anti-slip device of the present invention will be described below with reference to the embodiments shown in the drawings. As shown in FIG. 2, the anti-slip device A of the present invention can be used as studs for soccer shoes, spikes for golf shoes, spikes for track and field shoes, anti-slip devices for mountain climbing shoes or baseball shoes, or anti-slip fasteners, etc. This relates to anti-slip devices such as conventional spikes and anti-slip devices, which are not as heavy as steel materials, and are not corroded by dilute sulfuric acid, etc., and are die-cast aluminum alloys or The main body of the cast product is made of hard aluminum, and the main body B of the hard aluminum anti-slip tool is immersed in the dilute sulfuric acid solution in a tank filled with dilute sulfuric acid solution, and then heated to 8 to 10 degrees Celsius. By applying a current of about 16 to 20 volts for about 40 minutes to 4 hours, the outer surface layer 1 of the main body B of the aluminum anti-slip tool and this A continuous permeation layer 2 in the tissue of the main body B
It is possible to form an ultra-hard aluminum oxide film A having a thickness of about 30u to 300u. At this time, if a current with a voltage of about 16 to 20 volts is applied for 40 minutes, the film thickness will become 30u, which will reach a maximum of 4.
The film thickness becomes 300u by applying electricity for a period of time, but the ultra-hard aluminum oxide film A of the present invention has a thickness of 30u.
The best coating thickness is from 50u to 50u (current application time: 40 to 60 minutes). (The conventional external surface treatment method involves immersing aluminum in a dilute sulfuric acid solution and then applying electricity to it. The method is to apply electricity at a low temperature of -1 to -5 degrees Celsius and at a high voltage of 70 to 150 volts for a long time of 80 to 120 minutes. (Otherwise, only a 30 to 50 W film would have been formed.) At this time, when the ultra-hard aluminum oxide film A was observed under an electron microscope, the film A was flat, as shown in Figure 1. It is recognized that the crystal body 3, which is a hexagonal columnar object and has a cylindrical through-hole 4 for conducting electricity at the center of the hexagonal columnar shape, is connected in a continuous manner in a plane and in layers. There is. This is done so that the same crystals are piled up at the same speed in a frost column shape in proportion to the time the current is applied, and penetrate into the structure of the main body B of the hard aluminum anti-slip tool to form the permeation layer 2. It also forms the outer surface layer 1 of the main body B, and the combined thickness of these two layers 1 and 2 is 300 u at maximum.

The hardness of the ultra-hard aluminum oxide film A formed in this way is Rockwell hardness 70.
Not only is it harder than front and rear masuri and has excellent abrasion resistance, corrosion resistance, impact resistance, heat resistance, and peeling resistance, but also has a light specific gravity of 2.7, so it is suitable for spikes, studs, and other non-slip devices. Not only does it have excellent properties as a fastener and anti-slip device, but it also has superior properties compared to ceramics and new ceramics.
Excellent in terms of economy and mass productivity.

When the anti-slip tool equipped with the ultra-hard aluminum oxide film A of the present invention has a Teflon resin or silicone resin attached to its outer surface, a large number of hexagonal columnar crystal bodies 3 forming the film A can be used. Since a part of the Teflon resin, etc. has penetrated into the through-holes 4, even when the anti-slip tool comes into contact with the ground, etc., the film layer of the Teflon resin, etc. is worn away inside each of the through-holes 4. It remains until the anti-slip device is removed and does not peel off easily, so that dirt and mud do not adhere to the anti-slip device, and the lightness of the athletic shoe equipped with the anti-slip device of the present invention and its sole are always improved. There is no risk of damaging the appearance of the product.

In addition, the anti-slip tool equipped with the ultra-hard aluminum oxide film A of the present invention can naturally develop a color such as gold, silver, amber, or bronze depending on the type of aluminum, and if the outer surface is dyed, the anti-slip tool A large number of hexagonal columnar crystals 3 forming
A portion of the dye has also penetrated into the through-holes 4, so that even when the anti-slip tool comes into contact with the ground, etc., the dye remains in each of the through-holes 4 for any length of time. There is no fear that the coloring will fade, and the appearance of the anti-slip tool can be maintained for a long time, increasing its commercial value.

Therefore, the anti-slip device of the present invention contributes to increasing the commercial value of athletic shoes equipped with spikes, studs, and other anti-slip devices, such as golf shoes, baseball shoes, track and field shoes, soccer shoes, mountain climbing shoes, etc. can.

[Brief explanation of drawings]

The drawings show the anti-slip device of the present invention.
FIG. 1 and FIG. 1 are enlarged schematic diagrams of an ultra-hard aluminum oxide film of an anti-slip tool observed with an electron microscope, in which FIG. 1 is a partially enlarged schematic plan view, and FIG. 1 is a partially enlarged schematic cross-sectional diagram. Figures 2 to 2 are illustrations of the main body of the anti-slip tool made of hard aluminum. Third
The figures also show an example of an anti-slip tool provided with an ultra-hard aluminum oxide film. <Symbols in the drawings>, A: Ultra-hard aluminum oxide film, B: Main body, 1: Outer surface layer, 2: Penetration layer, 3: Hexagonal columnar crystal, 4: Through-hole.

Claims (1)

[Scope of Claims] 1. A relatively hard aluminum-based anti-slip tool body is immersed in a dilute sulfuric acid solution, and energized at a relatively high temperature and low voltage for a relatively short period of time, so that the outer surface of the body is 30u to 30u consisting of a layer and a permeable layer connected to it
Anti-slip device featuring a 300u thick ultra-hard aluminum oxide coating. 2. The ultra-hard aluminum oxide film is a combination of a large number of hexagonal columnar crystals, and each hexagonal columnar portion has a through hole formed therein, as set forth in claim 1. anti-slip device. 3. Claim 1, characterized in that the through-holes of each hexagonal columnar portion of the combination of a large number of hexagonal columnar crystals of the ultra-hard aluminum oxide coating are impregnated with Teflon resin or silicone resin. and the anti-slip tool according to any of paragraph 2. 4. A suitable dye is impregnated into the through-holes of each of the hexagonal columnar crystals of the combination of a large number of hexagonal columnar crystals of the ultra-hard aluminum oxide coating, and The anti-slip tool according to any of paragraph 2.