ELECTRONIC DEVICE HOUSING AND METHOD FOR MANUFACTURING THE SAME
A housing is provided, with a plurality of tridimensional patterns formed on opposite surfaces of the housing. The patterns are formed by stamping process.
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The disclosure relates to electronic device housings and methods for manufacturing the housings and, particularly, to a housing forming tridimensional patterns thereon and a method of manufacturing the housing.
2. DESCRIPTION OF RELATED ARTNowadays, portable electronic devices, such as mobile phones, laptops, or personal digital assistants, are widely used. Metallic housings are often used to protect and decorate these portable electronic devices. Generally, in a typical manufacturing process, the housings are spray-painted for decoration and protection. However, the paint tends to have a low wear-resistance, which will be unattractive over time.
Many aspects of the present embodiments can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present embodiments. Moreover, in the drawings, all the views are schematic, and like reference numerals designate corresponding parts throughout the several views.
The disclosure is illustrated by way of example and not by way of limitation in the figures of the accompanying drawings in which like references indicate similar elements. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references mean at least one.
Referring to
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Step 902, sheet metal is provided and embossed by stamping the sheet metal with a stamping die. The blanking clearance of the stamping die can range from 0 to 10% T, and also can be negative clearance blanking, in one embodiment, the blanking clearance is zero.
A male die of the stamping die forms a plurality of relief patterns, while a female die of the stamping die forms a plurality of intaglio patterns corresponding to the relief patterns of the male die. The sheet metal is transported between the male die and the female die and sandwiched between the male die and the female die to form the patterns 110.
Referring to
The curvature radius r1 of the edges of the patterns 110 is at least 0.05 mm everywhere. The curvature radius r2 of an angle α between a sidewall and a bottom wall of the patterns 110 may be at least 0.005 mm, and in this embodiment, ranges from 0.005 mm to 0.01 mm. The angle α between the sidewall and the bottom wall of the patterns 110 can be in a range of about from 90 to 110 degrees, and in this embodiment, is 90 degrees.
Step 904, the sheet metal embossed is cut to form an essentially rectangular shape and then sides of the metal board are finished.
Step 906, the finished sheet metal is stamped to elongate to form the flange 12. Referring to
Step 908, the finished sheet metal with flange 12 is side cut to form the housing 100.
Step 910, the housing 100 is anodized to form an anodic film on the inner surface 102 and the outer surface 101. The housing 100 is then placed into a dyeing container (not shown) containing dye (e.g., pigment/paint), and the dye is absorbed into the holes of the oxide film. In this way, the housing 100 is dyed a predetermined color. Finally, the dyed housing 100 is placed into a container (not shown) of resin particulates (for example, fluorine resin, epoxy resin or polyvinyl resin) suspended in liquid (for example, water or ethanol). The resin particulates form a hard protective film (not shown) on the oxide film, giving the housing 100 great wear-resistance and a high degree of polish/shine.
Understandably, the shape of the housing 100 can be adjusted.
It is believed that the present embodiments and their advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the spirit and scope of the description or sacrificing all of its material advantages, the examples hereinbefore described merely being exemplary embodiments.
Claims
1. A housing comprising:
- an outer surface; and
- an inner surface;
- wherein a plurality of tridimensional patterns is formed on the outer surface and the inner surface by a stamping process, the patterns of the inner surface is opposite to the patterns of the outer surface.
2. The housing of claim 1, wherein the housing is made of copper, iron, aluminum, titanium, singly or in combination.
3. The housing of claim 1, wherein the housing is made of aluminum alloy.
4. The housing of claim 1, wherein the housing is anodized.
5. The housing of claim 1, wherein the patterns on the inner surface is intaglio and the patterns on the outer surface is relief.
6. The housing of claim 1, wherein the patterns on the inner surface is relief and the patterns on the outer surface is intaglio.
7. The housing of claim 1, wherein a height or depth of the patterns is about 0.03 millimeters.
8. The housing of claim 1, wherein the thickness of the housing is about 0.8 millimeters.
9. The housing of claim 1, wherein a flange extends towards the inner surface from edges of the housing by stamping the housing.
10. The housing of claim 10, wherein an arc-shaped corner is formed between every two adjacent sides of the flange.
11. The housing of claim 11, wherein a cutout is defined in a middle of a side of the housing.
12. The housing of claim 1, wherein in length of the patterns per square meter is 650 meters.
13. A method for manufacturing a housing, the method comprising:
- providing sheet metal; and
- embossing the sheet metal by stamping process to form a plurality of tridimensional patterns on two opposite surfaces of the sheet metal, the patterns of the two opposite surfaces are opposite to each other.
14. The method of claim 13, further comprising the step of anodizing the housing after forming the patterns.
15. The method of claim 13, wherein the blanking clearance of the stamping die is zero blanking clearance.
16. The method of claim 13, wherein the blanking clearance of the stamping die ranges from 0 to 10% of T, where T is a thickness of the sheet metal.
17. The method of claim 13, wherein a thickness of the sheet metal ranges from 0.2 millimeters (mm) to 1.5 mm.
Type: Application
Filed: Apr 28, 2010
Publication Date: Jan 6, 2011
Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD. (Shenzhen City), HON HAI PRECISION INDUSTRY CO., LTD. (Tu-Cheng)
Inventors: YEN-CHUAN CHANG (Tu-Cheng), WEN-CHEN HUANG (Tu-Cheng), MING QIAO (Shenzhen City)
Application Number: 12/769,617
International Classification: A47B 81/00 (20060101); B21D 31/00 (20060101);