WO2018001134A1 - Processing method for housing, housing, and electronic device - Google Patents

Abstract

A processing method for a housing is used to form a housing. The housing has a back plate (2) and a side bezel (3) arranged around the periphery of the back plate (2). A plurality of function openings (4) are arranged at the side bezel (3). The method comprises: providing a metal sheet (1) having a plurality of function openings (4) at its periphery; and performing stamping forming on the metal sheet (1) to form a housing, such that the function openings (4) are positioned at a side bezel (3) formed as a result of bending of the metal sheet (1).

Description

Shell processing method, housing and electronic device Technical field

The present invention relates to the field of electronic device housings, and more particularly to a housing processing method, a housing, and an electronic device.

Background technique

As the shape design of electronic device products becomes thinner and thinner, the screen size becomes larger and larger, the strength requirements of the electronic device casing are higher and higher, and the metal casing is more and more applied to the electronic device, and the metal casing is adopted. The electronic device generally uses a metal material as a housing, including a back panel and a side frame, and the electronic device needs to be provided with various buttons on the side frame.

For example, the Chinese patent document discloses a metal electronic device housing including a middle frame for mounting electronic components such as a main board and a casing, the middle frame and the casing being an integral structure, which is made of a metal material, A through hole or a card slot for fixing electronic components of the electronic device is disposed on the middle frame and/or the housing, and the middle frame is provided with an antenna breakage for avoiding a complete loop of the metal middle frame.

The metal casing can usually be formed by CNC forming or sheet metal forming. The CNC forming structure has high strength and good quality, but the processing is relatively complicated, resulting in long production cycle and high production cost. Therefore, the production of existing products is more inclined to cost. Low-cost, fast-growing sheet metal forming.

Summary of the invention

An object of the present invention is to provide a method for processing a casing which can avoid multiple positioning during the process of opening the side of the press-formed casing, resulting in a technical problem that the side opening position is difficult to process accurately.

Another object of the present invention is to provide a housing which is low in production cost, high in efficiency, and high in positional accuracy of side opening.

Still another object of the present invention is to provide an electronic device which is low in production cost, high in efficiency, and high in positional accuracy of side opening.

To this end, the present invention employs the following technical solutions:

In one aspect, a housing processing method is provided for molding a housing, the housing having a back panel and a side frame ringing around a periphery of the back panel, and a plurality of functional openings are disposed on the side frame Providing a metal plate having a plurality of said functional openings at a periphery, the metal plate is stamped to form the casing, and the functional opening is located on the side frame formed by folding the metal plate.

In another aspect, a housing is provided that is machined using the housing processing method described above.

In still another aspect, an electronic device including the above housing is provided.

DRAWINGS

The invention will now be described in further detail with reference to the drawings and embodiments.

FIG. 1 is a schematic perspective view showing the three-dimensional structure of a metal plate after punching a functional hole according to an embodiment.

2 is a schematic perspective view of the housing of the embodiment.

Figure 3 is a partial cross-sectional view showing the housing of still another embodiment.

4 is a flow chart of a metal shell processing method according to an embodiment.

Figure 5 is a flow chart of the first surface treatment described in the embodiment.

Figure 6 is a flow chart of the second surface treatment described in the embodiment.

In the picture:

1. Metal plate; 2. Back panel; 3. Side frame; 4. Functional opening.

detailed description

A housing processing method for molding a housing, the housing having a back panel and a side frame ringing around a peripheral portion of the back panel, and a plurality of functional openings are provided on the side frame to provide a peripheral portion A metal sheet having a plurality of said functional openings is stamped and formed into a stamping manner, and the functional opening is located on the side frame formed by folding the metal sheet.

In the related art, sheet metal stamping is usually formed by stamping and forming the overall shape of the casing, and then processing various side openings provided on the side frame. Currently, an electronic device with an integrated metal casing is used, and the side openings are all passed through the CNC. Machining, side hole CNC machining has some shortcomings: it needs to be machined upright, and the surrounding hole machining needs to rotate different faces to process; the positioning is prone to deviation; because the aperture is small, the CNC needs small knife processing, which is time consuming. In the processing method of the present application, the side opening of the casing is performed before the shell is stamped and formed, which can avoid multiple positioning during the side hole drilling process of the stamped molding shell, and the technical problem that the side opening position is difficult to process accurately. . The casing processed by the method has low production cost, high production efficiency, and high precision of the side opening position.

The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

Embodiment 1:

As shown in FIG. 1 and FIG. 2, in the present embodiment, a casing processing method according to the present invention is used for molding a casing, the casing having a back panel 2 and a ring disposed on the back panel 2 a side frame 3 of the circumference, on which the side frame 3 is disposed a plurality of functional openings 4, comprising: first stamping to form a metal sheet 1 having a plurality of said functional openings 4 at the periphery, and then performing a second stamping to form the sheet metal 1 to turn toward the first surface of the sheet Folded metal housing.

The structure and the number of the functional openings 4 are also different according to the type and model of the processed casing product. In the present embodiment, all of the through holes provided in the inside of the metal sheet 1 are referred to as the function opening 4 The periphery is surrounded by the metal sheet 1), however, in other embodiments, the functional opening 4 may be provided in any number of notches at the edge of the metal sheet 1 depending on the specific use requirements. It may also be a combination of a notch provided at the edge of the metal sheet 1 and a through hole provided inside the metal sheet 1.

Specifically, the function opening 4 includes a power key hole, a volume key hole, a SIM card hole, a USB hole, and a headphone hole. However, the type of the functional opening 4 and its function are not limited to the case described in this embodiment, and any functional opening 4 that is opened on the casing by a person skilled in the art to realize different functions belongs to the protection scope of the present solution.

In the housing processing method of the embodiment, the outer shape of the metal sheet 1 is separately formed from the functional opening 4, specifically, the outer contour of the metal sheet 1 is stamped to form the outer contour and then stamped to form the function. Opening 4.

In other embodiments, the functional opening 4 may be stamped to form the outline of the sheet metal 1 and then stamped.

Embodiment 2:

As shown in FIGS. 1, 2, and 3, in the embodiment, a housing processing method is used for molding a housing, the housing having a back panel 2 and a ring disposed on a periphery of the back panel 2 a side frame 3 on the side frame 3 is provided with a plurality of functional openings 4, which are first stamped to form a metal sheet 1 having a plurality of said functional openings 4 at the periphery, and then a second stamping is used to form the sheet metal 1 a metal shell that is folded over the first surface of the sheet.

A plurality of the functional openings 4 are all notches provided at the edge of the metal sheet 1. The functional opening 4 includes a power keyhole, a volume keyhole, a SIM card hole, a USB hole, and a headphone hole.

As a preferred technical solution, the functional opening 4 in the embodiment is a countersunk opening, and includes a first opening portion and a second opening portion that communicate with each other, and the size of the first opening portion is larger than the second opening portion. The size of the opening.

The outline of the metal sheet 1 is formed by the same punching as the functional opening 4. The outline of the metal sheet 1 and the functional opening 4 are formed by the same stamping, so that the positional accuracy of the functional opening 4 can be more effectively ensured, and the position on the metal sheet 1 is more precise, which can improve the mounting performance of the key.

Embodiment 3:

As shown in FIG. 1 to FIG. 6 , in the embodiment, a housing processing method is used for molding a housing, the housing having a back panel 2 and a side frame ringing on a peripheral portion of the back panel 2 3, a plurality of functional openings are arranged on the side frame 3 4. The first metal sheet 1 having a plurality of said functional openings 4 is formed by stamping for the first time, and then the metal sheet 1 is formed by a second stamping to form a metal shell whose circumference is folded toward the first surface of the sheet.

This embodiment is basically the same as the casing processing method of the above embodiment, and the main difference is that the embodiment further includes performing the first finishing process on the metal sheet 1, and the first finishing processing is in the pair. The metal sheet 1 is subjected to stamping to form an integral metal case in which the peripheral portion is folded toward the first surface of the sheet material.

Specifically, the first finishing process includes:

First surface treatment: T-treating the surface of the metal sheet 1 having a plurality of openings, and etching the nano-holes on the first surface of the sheet with an acid solution to form a porous structure;

Finished shape: through CNC machining, finishing the outline of metal sheet 1 and function opening 4;

Second surface treatment:

Polishing, polishing and polishing the second surface of the metal sheet 1 opposite to the first surface;

Sand blasting, the above polished surface is sandblasted to make the polished surface have a graininess and form a certain roughness.

As a preferred technical solution, the method for processing a casing according to the embodiment further includes: performing in-mold injection molding on the stamped metal shell, and forming an internal member in the interior of the metal shell, The functional opening 4 is filled with a filling block during the injection molding process.

Further, in the present embodiment, there is further provided a casing which is processed by the casing processing method as described above.

Referring to Fig. 2, the back panel 2 of the casing may be formed in a rectangular plate-like structure, and the side frame 3 may be formed in a rectangular frame structure. Here, it should be noted that the "rectangular" and "cuboid" as used in the present application should be understood in a broad sense, that is, a rectangular or rectangular parallelepiped in a strict sense is not required. For example, the shape of the back panel 2 shown in FIG. 2 can be understood as a rectangular shape, and the side frame 3 shown in FIG. 2 can be understood as a rectangular parallelepiped shape.

Specifically, a smooth transition between adjacent two side edges of the back panel 2 is achieved. For example, the adjacent two sides of the back panel 2 can be smoothly transitioned by a circular arc. Thereby, the line of the casing can be made smooth, the appearance is beautiful, and the use feeling of the casing is improved.

Optionally, a smooth transition between adjacent two side walls of the side frame 3 is achieved. For example, the adjacent two side walls of the side frame 3 can smoothly transition through a circular arc. Thereby, the lines of the casing can be made smoother and the appearance is more beautiful.

According to some embodiments of the invention, at least one functional opening 4 is provided on each side wall of the side frame 3. For example, in the example of FIG. 2, there are five functional openings 4, and a front side wall, a rear side wall and a left side wall of the side frame 3 are respectively provided with a functional opening 4, and the right side wall of the side frame 3 is provided. Two function openings 4. Thereby, the distribution of the functional openings 4 can be made substantially uniform, the overall structural strength of the casing can be improved, and the appearance of the casing can be further improved.

Specifically, the cross section of the at least one functional opening 4 is formed in a circular shape. Further, the cross section of the at least one functional opening 4 is formed in an oblong shape. The structure is simple and the processing is convenient.

According to some embodiments of the invention, a smooth transition between the side frame 3 and the back panel 2 is achieved. Thereby, the appearance and the feeling of use of the casing can be further improved.

In addition, an electronic device including the above casing is also provided in this embodiment. In the description herein, it is to be understood that the terms "first" and "second" are used only to distinguish between the description and have no special meaning.

It is to be understood that the above-described embodiments are merely preferred embodiments of the invention and the technical principles of the invention, and any changes or substitutions that are readily apparent to those skilled in the art are within the scope of the presently disclosed technology. All should be covered by the scope of the present invention.

Claims (20)

A housing processing method for molding a housing, the housing having a back panel and a side frame ringing around a peripheral portion of the back panel, wherein the side frame is provided with a plurality of functional openings, wherein Providing a metal plate having a plurality of said functional openings at a periphery, the metal plate is stamped to form the casing, and the functional opening is located on the side frame formed by folding the metal plate. The method of processing a casing according to claim 1, wherein a plurality of the functional openings are all notches provided at an edge of the metal sheet, or all of the through holes provided inside the metal sheet, or Any number of combinations of notches provided at the edge of the sheet metal and through holes provided inside the sheet metal are provided. The housing processing method according to claim 2, wherein the function opening comprises a power key hole, a volume key hole, a SIM card hole, a USB hole, and a headphone hole. The method of processing a casing according to claim 3, wherein the functional opening is a countersunk opening, and includes a first opening portion and a second opening portion that communicate with each other, and the size of the first opening portion is larger than The size of the second opening is described. The method of processing a casing according to any one of claims 1 to 4, wherein the outer shape of the metal sheet is separately formed from the functional opening, and the outline of the metal sheet may be formed by first stamping. Re-stamping to form the functional opening, or stamping to form the functional opening and then stamping to form the outline of the sheet metal. The method of processing a casing according to any one of claims 1 to 4, characterized in that the outline of the metal sheet and the functional opening are formed by the same stamping. The method of processing a casing according to any one of claims 1 to 6, further comprising performing a first finishing treatment on said metal sheet, said first finishing processing on said metal The sheet is stamped to form an integral metal shell that is folded over the first surface of the sheet. The method of processing a casing according to claim 7, wherein said first finishing process comprises: First surface treatment: T-treating the surface of the metal plate having a plurality of openings, and etching the nano-holes on the first surface of the plate with an acid solution to form a porous structure; Finished shape: through CNC machining, finishing the outline of the metal sheet and function opening; Second surface treatment: Polishing, polishing and polishing the second surface of the metal sheet opposite to the first surface; Sand blasting, the above polished surface is sandblasted to make the polished surface have a graininess and form a certain roughness. The method of processing a casing according to claim 8, further comprising: performing in-mold injection molding of the stamped metal casing, forming an internal member inside the metal casing, in the in-mold molding process Filling block The functional opening is filled. A casing processed by the casing processing method according to any one of claims 1 to 9. The casing according to claim 10, wherein the back panel is formed in a rectangular plate-like structure, and the side frame is formed in a rectangular frame structure. The housing of claim 11 wherein a smooth transition between adjacent two sides of said back panel. The housing according to claim 12, wherein the adjacent two side edges of the back panel are smoothly transitioned by a circular arc. The housing according to any one of claims 11 to 13, wherein a smooth transition between adjacent two side walls of the side frame. The housing according to claim 14, wherein the adjacent two side walls of the side frame are smoothly transitioned by a circular arc. The housing according to claim 11, wherein at least one of said functional openings is provided on each side wall of said side frame. The housing according to any one of claims 10 to 16, wherein a smooth transition between the side frame and the back panel is achieved. The housing according to any one of claims 10 to 17, wherein a cross section of at least one of the functional openings is formed in a circular shape. The housing according to any one of claims 10 to 18, characterized in that the cross section of at least one of the functional openings is formed in an oblong shape. An electronic device comprising the housing according to any one of claims 10 to 19.

Images