CN1400858A

CN1400858A - Shell of portable electronic product and its manufacturing method

Info

Publication number: CN1400858A
Application number: CN 01124497
Authority: CN
Inventors: 吴权峰
Original assignee: Hongda International Co ltd
Current assignee: Hongda International Co ltd
Priority date: 2001-07-30
Filing date: 2001-07-30
Publication date: 2003-03-05

Abstract

A portable electronic product shell and a manufacturing method thereof can not only be configured with a complex combination structure, but also have thinner thickness. The manufacturing method comprises the following steps: firstly, manufacturing a metal plate into a metal shell plate with a very thin thickness; then, the metal shell plate and the molding material are processed together to form a semi-finished product; finally, the semi-finished product is subjected to surface treatment to form the shell. The shell is characterized by comprising metal shell plates with exposed upper and lower surfaces, and the embedded forming technology can meet the requirement of changeable structure in design besides thinner thickness.

Description

The shell of portable electronic product and method for making thereof

Technology contents

The invention relates to a kind of shell and method for making thereof, particularly a kind of shell and method for making thereof of utilizing produced with combination technology to make.

Background technology

In recent years, the 3C industry accounts for the epochmaking status of Taiwan electronic industry, because the life cycle of electronic industry is short, lightweight and the quick design that has product intensity concurrently have become the inexorable trend of new century, fast development along with the 3C industry, future a large amount of market demands will be arranged at all kinds of notebook computers, mobile phone and personal digital assistant products such as (Personal Digital Assistant are called for short PDA), and towards light, thin, short, little trend development.And the reduced down in thickness of product casing can be dwindled small product size and weight under the prerequisite that does not influence circuit design, therefore extensively be studied application, when shell is thinned to 1mm nearly, even during less than 1mm, all be a major challenge for material merchant, product and mold design engineer, mould factory, molding factory and make-up machine and auxiliary device manufactory.

Traditionally when making shell, can adopt the punching press or the technology of moulding, though punching press can obtain thin thickness, because technical restriction is merely able to do some simple variations, for example punching, flanging etc., do not meet the requirement in the design, and, then can a lot of differences, the variation of complexity be arranged according to design if adopt the mode of moulding, for example integrated structures such as fin, deep hole, latch, Ka Gou relatively meet the needs in the product design.

Please refer to Fig. 1, it is the shell schematic diagram with multiple integrated structure.The inboard of shell 100 disposes many different types of integrated structures, be used for engaging with other part (not shown) of product casing or internal circuit (not shown) etc., with this figure is example, integrated structure has comprised

conjunction

101a, 101b and

tabular projection

102a, 102b, all be configured in the inboard of shell 100, because these integrated structure complex structures can't use the mode of punching press to make, therefore at present all adopt the mode of moulding to make shell.But the mode of moulding still has its restriction technically, the factor on raw material, the shell ejection forming technique also need cooperate height to melt the glue temperature, shoot high and press and very high conditions such as firing rate, and must have good exhaust and Cooling Design, with present technology, when using plastics, can accomplish the thickness of 0.8mm～0.9mm as the shell raw material, but may produce the problem of rate of finished products, but the thickness of general volume production approximately is about 1mm.

By above explanation as can be known, in order to meet the needs in the product design, use forming technique to make the shell of portable electronic product at present, about about 1mm, existing technology can not have been reduced its thickness more greatly in its restriction.

Summary of the invention

In view of this, the shell that purpose of the present invention just provides a kind of portable electronic product with and method for making, not only can dispose complicated integrated structure, also can have the thickness thinner simultaneously than conventional enclosure.

The method for making of this kind shell may further comprise the steps: at first utilize plastic processing method (adopting the mode of punching press usually) that sheet metal is made the metal coverboard that thickness approximately (is decided on the workpiece size) between 0.1mm～0.4mm; Next utilize embedding moulding (Insert Molding) technology that metal coverboard and moulding material are processed jointly to make semi-finished product again; Carry out surface treatment to make shell at semi-finished product at last.This kind shell is characterised in that to have the exposed metal coverboard of upper and lower surface, and not only its thickness can satisfy the strict demand of portable electronic product to outer casing thickness, and the technology that embeds moulding simultaneously also can satisfy design, and upward structure can diverse demand.

For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. are described in detail as follows.

Description of drawings

Fig. 1 is the shell schematic diagram with multiple integrated structure.

The leading portion manufacture craft schematic diagram of the shell that provided according to a preferred embodiment of the present invention is provided Fig. 2.

Fig. 3 is a semi-finished product generalized section among Fig. 2.

Fig. 4 is the schematic diagram at junction surface among Fig. 3.The shown by reference numeral explanation

100: shell

101a: conjunction

101b: conjunction

102a: tabular projection

102b: tabular projection

210: sheet metal

220: the metal coverboard

230: semi-finished product

301: parts of plastics

302: the junction surface

Embodiment

Please refer to Fig. 2, the leading portion manufacture craft schematic diagram of the shell that its foundation preferred embodiment of the present invention of doing is provided.As shown in the figure, sheet metal 210 is processed into metal coverboard 220 via a kind of plastic processing method, plastic processing method is to be selected from punching press, forge, extend, the compound technology such as (progressive coldforming) of impact forging, the general technology of punching press that adopts is processed at sheet metal 210, after making metal coverboard 220, metal coverboard 220 is inserted in the mould, again moulding material (plastics) is poured into mould, utilize the technology of this embedding moulding (Insert Molding) to make semi-finished product 230, and then carry out surface treatment (plating) at semi-finished product 230, promptly can make this kind shell.

Then please refer to Fig. 3, semi-finished product profile among its Fig. 2 that does.By finding out among the figure, semi-finished product 230 include metal coverboard 220 and parts of plastics 301, the upper and lower surface of metal coverboard 220 is exposed, not coated by parts of plastics 302, and metal coverboard 220 is to be made by impact style, its thickness approximately between 0.1mm～0.4mm, 302 thick about 1mm of parts of plastics (can be between 0.8～2.0mm).The edge of metal coverboard 220 engages with parts of plastics 301 and forms junction surface 302.Next please refer to Fig. 4, the schematic diagram at junction surface among its Fig. 3 that does.By finding out among the figure, in other words the edge of metal coverboard 220, can be regarded as metal coverboard 220 embeds in the parts of plastics 302 by parts of plastics 302 clampings.Wherein parts of plastics 302 is to utilize the forming technique manufacturing, so can do many variations in the design.

The shell of the portable electronic product that the above embodiment of the present invention is disclosed has the following advantages at least:

1. thickness can be as thin as between 0.1mm～0.4mm, can save 70% volume approximately than traditional method, and needn't sacrifice the structural change that needs in the design.

2. intensity can be better than traditional method.

3. though density metal is bigger, because of volume less, so that overall weight increases is limited.

In sum; though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; any insider; without departing from the spirit and scope of the present invention; when can doing various changes and retouching, so protection scope of the present invention is as the criterion when looking the accompanying Claim person of defining.

Claims

1. A method for manufacturing the shell of a portable electronic product, comprising the following steps:

forming a metal shell from a metal sheet by a plastic working method;

a using insert molding technology to co-process the metal shell plate and a molding material to form a semi-finished product; and

Surface treatment is performed on the semi-finished product to make the shell.

2. The manufacturing method as claimed in claim 1, wherein the metal sheet is a highly ductile metal.

3. The manufacturing method according to claim 1, wherein the plastic working method is stamping.

4. The manufacturing method as claimed in claim 1, wherein the thickness of the metal shell plate is approximately between 0.1 mm and 0.4 mm.

5. The manufacturing method as claimed in claim 1, wherein step a further comprises the following steps:

inserting the metal shell into a forming mould; and

The molding material is poured into the molding die to obtain the semi-finished product.

6. The manufacturing method as claimed in claim 5, wherein the molding die is designed so that the metal shell is not covered by the molding material.

7. The method of manufacturing the housing as claimed in claim 1, wherein the molding material is plastic.

8. The method of manufacturing a casing according to claim 1, wherein the molding material is a metal with a low melting point.

9. The manufacturing method of the casing according to claim 1, wherein the surface treatment method for the semi-finished product is electroplating.

10. The manufacturing method of the casing according to claim 1, wherein the surface treatment method for the semi-finished product is painting.

11. The manufacturing method of the casing according to claim 1, wherein the surface treatment method for the semi-finished product is baking paint.

12. The manufacturing method of the casing according to claim 1, wherein the surface treatment method for the semi-finished product is pasting a decorative adhesive film.

13. A shell of a portable electronic product, characterized in that:

A metal shell plate is embedded in the shell, and the metal shell plate is made by stamping.

14. The casing as claimed in claim 13, wherein the casing is manufactured by insert molding composite manufacturing process.

15. The casing as claimed in claim 13, wherein the metal shell is made of a metal with high ductility.

16. The casing as claimed in claim 13, wherein the metal shell plate has a thickness approximately between 0.1mm˜0.4mm.

17. The casing as claimed in claim 13, wherein the casing is integrally formed with surface treatment.