CN1774158A - Portable electronic device case and producing method thereof - Google Patents

Abstract

The invention relates to a casing of a portable electronic device, which includes a magnesium alloy base material and an aluminum alloy coating layer, wherein the aluminum alloy coating layer covers the surface of the magnesium alloy base material, and the surface of the aluminum alloy coating layer is anodized to form an anodic treatment layer. The manufacturing method of the above-mentioned portable electronic device housing includes the following steps: providing a magnesium alloy base material, cleaning it after polishing, putting the magnesium alloy base material into a vacuum coating chamber, and vacuuming the vacuum coating chamber, and using aluminum metal as the For the sputtering target, a layer of aluminum alloy coating is sputtered on the surface of the magnesium alloy substrate, and the aluminum alloy is anodized, and then an anodized layer is formed on the surface.

Description

Portable electronic device case and manufacturing method thereof

【Technical field】

The invention relates to a casing of a portable electronic device and a manufacturing method thereof.

【Background technique】

Portable electronic devices, such as digital cameras, personal digital assistants (PDAs), mobile phones, etc., all have a shell to prevent electromagnetic radiation. Existing portable electronic device casings are plastic shells coated with thin metal layers (such as aluminum), such as U.S. Patent No. 6,207,089. In order to reduce electromagnetic interference around portable electronic devices and eliminate static electricity accumulation, it uses adhesives to bond superplastic alloy sheets Bonded to the inner surface of the plastic housing. However, when this method is used, the alloy flakes are easy to fall off or wrinkle because the bonding force between the alloy flakes and the plastic shell is not strong. In addition, the industry also uses alloy metals as casings for portable electronic devices (such as aluminum alloys, magnesium alloys, etc.). Relatively speaking, magnesium alloy casings have better rigidity, heat dissipation, corrosion resistance, and electromagnetic radiation resistance than plastic casings. Compared with the aluminum alloy casing, the magnesium alloy casing has lower density and better shock resistance, which can meet the needs of portable electronic devices in pursuit of lightness and thinness.

However, due to the poor hardness and wear resistance of the magnesium alloy shell, the surface of the magnesium alloy shell is easy to wear and tear. At the same time, because the magnesium alloy only has a single silver appearance, it is easy to cause monotonous colors and lose its appeal to customers.

In view of this, it is necessary to provide a portable electronic device casing with good wear resistance and various appearance colors and a manufacturing method thereof.

【Content of invention】

The purpose of the present invention is to provide a portable electronic device casing with good wear resistance and various appearance colors.

Another object of the present invention is to provide a method for manufacturing the casing of the portable electronic device.

In order to achieve the purpose of the present invention, the present invention provides a portable electronic device housing, including a magnesium alloy substrate and an aluminum alloy coating layer, wherein the aluminum alloy coating layer covers the surface of the magnesium alloy substrate, and the surface of the aluminum alloy coating layer is treated Anodic treatment forms an anodized layer.

A method of manufacturing a portable electronic device housing, comprising the steps of:

Provide a magnesium alloy substrate, cleaned after polishing;

Putting the magnesium alloy substrate into a vacuum coating chamber, and evacuating the vacuum coating chamber;

Using aluminum metal as the sputtering target, a layer of aluminum alloy coating is sputtered on the surface of the magnesium alloy substrate;

The aluminum alloy is anodized to form an anodized layer on its surface.

Compared with the prior art, an anodic treatment layer is formed on the surface of the aluminum alloy coating layer of the portable electronic device shell of the present invention, and the anodic treatment layer has strong hardness and wear resistance, which can improve the properties of the magnesium alloy surface while retaining Magnesium alloy material is light in weight, and the anodized layer formed on the surface of aluminum alloy coating layer through anodic treatment has various styles of color appearance.

【Description of drawings】

FIG. 1 is a schematic structural view of the casing of the portable electronic device of the present invention.

【Detailed ways】

The portable electronic device shell of the present invention is suitable for portable electronic devices such as mobile phones, PDAs, and digital cameras.

1, the portable electronic device casing 1 of the present invention includes a magnesium alloy substrate 10 and an aluminum alloy coating layer 20, wherein the aluminum alloy coating layer 20 covers the surface of the magnesium alloy substrate 10, and the aluminum alloy coating layer 20 The surface is anodized to form an anodized layer 30 .

The manufacturing method of the portable electronic device casing 1 comprises the following steps:

Provide a magnesium alloy substrate 10, cleaned after polishing;

Put the magnesium alloy substrate 10 into a vacuum coating chamber, and evacuate the vacuum coating chamber;

Using aluminum metal as a sputtering target, sputtering an aluminum alloy coating layer 20 on the surface of the magnesium alloy substrate 10;

The aluminum alloy is anodized to form an anodized layer 30 on its surface.

The aluminum alloy coating layer 20 needs to be degreased and corroded before the anodic treatment, and trichlorethylene can be used for degreasing, and the corrosion process can be performed in an aqueous sodium hydroxide solution. Then, the aluminum alloy coating layer 20 is anodized by sulfuric acid, phosphoric acid, chromic acid or oxalic acid electrolyte to form an anodized film (not shown), and the anodized film is colored by dye dipping coloring method or electrolytic coloring method After the treatment, a colored anodic treatment layer 30 is formed, thereby obtaining a portable electronic device casing 1 with a colored appearance. Wherein when sulfuric acid solution is used as the anodic treatment solution, the anodic treatment layer 30 is a colorless transparent film; when chromic acid is used as the anodic treatment solution, the anodic treatment layer 30 is gray or gray-green; , the anodized layer 30 is yellow. After the coloring treatment, the colored anodic treatment layer 30 on the surface needs to be sealed, such as hot water sealing method, steam sealing method, nickel salt sealing method and the like. Since the anodized anodized layer 30 has strong corrosion resistance and wear resistance, the casing 1 of the portable electronic device of the present invention has strong corrosion resistance and wear resistance at the same time.

Claims (10)

1. portable case of electronic equipment, it is characterized in that: it comprises magnesium alloy base material and aluminium alloy coatings, wherein this aluminium alloy coatings is covered in the magnesium alloy substrate surface, and this aluminium alloy coatings surface is formed with an anodization through anode treatment.

2. portable case of electronic equipment as claimed in claim 1 is characterized in that: described anodization is a colourless transparent film.

3. portable case of electronic equipment as claimed in claim 1 is characterized in that: described anodization is grey or celadon film.

4. portable case of electronic equipment as claimed in claim 1 is characterized in that: described anodization is yellow film.

5. the manufacture method of a portable case of electronic equipment, it is characterized in that: it may further comprise the steps:

One magnesium alloy base material is provided, and the polishing back is cleaned;

It is indoor that this magnesium alloy base material is put into vacuum coating, and vacuumize this vacuum coating is indoor;

With the aluminum metal sputtered target material, at magnesium alloy substrate surface sputter layer of aluminum alloy coating layer;

This aluminium alloy is carried out anode treatment, form one deck anodization on its surface.

6. the manufacture method of portable case of electronic equipment as claimed in claim 5 is characterized in that: before the described anode treatment aluminium alloy coatings is carried out oil removing and corrosion treatment.

7. the manufacture method of portable case of electronic equipment as claimed in claim 6 is characterized in that: described oil removal treatment system utilizes trichloroethylene to carry out.

8. the manufacture method of portable case of electronic equipment as claimed in claim 6, it is characterized in that: described corrosion treatment ties up in the sodium hydrate aqueous solution to be carried out.

9. the manufacture method of portable case of electronic equipment as claimed in claim 5 is characterized in that: be to adopt sulfuric acid, phosphoric acid, chromic acid or oxalic acid electrolyte in the anode treatment process.

10. the manufacture method of portable case of electronic equipment as claimed in claim 5 is characterized in that: also comprise the sealing of hole processing in the described anode treatment process.

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