CN108748848B

CN108748848B - Housing, electronic device, and method for manufacturing housing

Info

Publication number: CN108748848B
Application number: CN201810515229.7A
Authority: CN
Inventors: 杨浪
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-05-25
Filing date: 2018-05-25
Publication date: 2020-11-24
Anticipated expiration: 2038-05-25
Also published as: CN108748848A

Abstract

The application relates to a shell, an electronic device and a shell manufacturing method, wherein the shell manufacturing method comprises the following steps of a, putting glass fiber into liquid epoxy resin, and uniformly stirring; step b, providing a die which comprises a male die and a female die, wherein a cavity is formed between the male die and the female die after die assembly; and c, injecting epoxy resin containing glass fiber into the cavity of the mold and molding to obtain the shell comprising the main body part and the side wall part, wherein the thickness of the side wall part is larger than that of the main body part. The manufacturing method of the shell is simple to operate and reduces production cost. The shell is of an integral structure, has no seam, is glittering and translucent in appearance and has good visual effect. The thickness of the side wall part is larger than that of the main body part, namely, the thickness difference exists between the side wall part and the main body part, so that the stereoscopic impression of the shell is strong, and the aesthetic feeling and the hand feeling of the shell are improved. The glass fiber is contained in the shell, so that the strength of the shell can be enhanced.

Description

Housing, electronic device, and method for manufacturing housing

Technical Field

The present disclosure relates to the field of electronic devices, and particularly to a housing, an electronic device and a method for manufacturing the housing.

Background

In order to improve the aesthetic feeling and hand feeling of the mobile phones, more and more mobile phones adopt a glass rear shell integrally formed with a middle frame to assemble the mobile phones. In the prior art, the plate glass with larger thickness is processed into the glass rear shell with required shape through CNC, but the manufacturing method is more time-consuming, the process is complicated, and the cost is higher.

Disclosure of Invention

An embodiment of the invention solves a technical problem of providing a shell with good three-dimensional effect and attractive appearance, a manufacturing method of the shell and an electronic device with the shell.

A method for manufacturing a shell comprises the following steps,

step a, putting glass fiber into liquid epoxy resin, and uniformly stirring;

step b, providing a die which comprises a male die and a female die, wherein a cavity is formed between the male die and the female die after die assembly;

and c, injecting epoxy resin containing glass fiber into the cavity of the mold and molding to obtain the shell comprising the main body part and the side wall part, wherein the thickness of the side wall part is larger than that of the main body part.

The manufacturing method of the shell is simple to operate and reduces the production cost by obtaining the shell with the thickness of the side wall part larger than that of the main body part through injection molding of the epoxy resin containing the glass fiber. The shell is of an integral structure, has no seam, is glittering and translucent in appearance and has good visual effect. The thickness of the side wall part is larger than that of the main body part, namely, the thickness difference exists between the side wall part and the main body part, so that the stereoscopic impression of the shell is strong, and the aesthetic feeling and the hand feeling of the shell are improved. The glass fiber is contained in the shell, so that the strength of the shell can be enhanced.

In one embodiment, the glass fibers are activated prior to being placed in the liquid epoxy resin.

In one embodiment, the parting surfaces of the male and female dies are flush with the end surfaces of the side wall portions remote from the body portion.

In one embodiment, the main body portion and the sidewall portion are perpendicular or at an obtuse angle, and the main body portion and the sidewall portion are in smooth transition.

In one embodiment, the main body has a flat plate shape or an arc-shaped curved surface shape.

In one embodiment, the sidewall portion is a flat plate or an arc plate.

In one embodiment, the main body portion has a thickness of 0.6mm to 1.0mm, and/or the sidewall portion has a thickness of 1.5mm to 3.5 mm.

In one embodiment, after the housing is molded, a decoration layer is disposed on the inner surfaces of the main body portion and the sidewall portion.

A housing is manufactured according to a manufacturing method of the housing, the side wall portion is formed by extending edges of the main body portion, and the main body portion and the side wall portion are in an open box shape.

Above-mentioned casing, lateral wall portion and main part constitution are uncovered box-like, and electronic device is like display screen, mainboard, the battery lamp part in the cell-phone and all places in the casing, need not to set up the center alone again. The shell is of an integral structure, has no seam, is glittering and translucent in appearance and has good visual effect. The thickness of the side wall part is larger than that of the main body part, namely, the thickness difference exists between the side wall part and the main body part, so that the stereoscopic impression of the shell is strong, and the aesthetic feeling and the hand feeling of the shell are improved. The inside glass fiber that contains of casing, the intensity of casing improves greatly.

The electronic device comprises a display screen assembly and a shell manufactured by the manufacturing method of the shell, wherein the display screen assembly and the side wall part of the shell are matched to cover a space surrounded by a main body part and the side wall part.

The rear shell of the electronic device is the shell, the display screen assembly is connected with the shell and covers the inner cavity of the shell, and the shell replaces the rear cover plate and the middle frame, so that the electronic device is simple in structure and easy to assemble.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic rear view of an electronic device according to an embodiment;

FIG. 2 is a three-dimensional schematic view of a housing of the back of the electronic device shown in FIG. 1;

FIG. 3 is a cross-sectional view taken along line A-A of the electronic device shown in FIG. 1;

FIG. 4 is a cross-sectional view taken along line A-A of the electronic device of FIG. 1 with the display screen assembly removed;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 1 with the display screen assembly removed in accordance with another embodiment;

FIG. 6 is a sectional view taken along line A-A of FIG. 1 with the display screen assembly removed in accordance with yet another embodiment;

FIG. 7 is a sectional view taken along line A-A of FIG. 1 with the display screen assembly removed in accordance with yet another embodiment;

FIG. 8 is a schematic view of the closing of the mold;

FIG. 9 is a schematic view of the mold of FIG. 8 for making a shell;

fig. 10 is a schematic drawing of the demolding of the shell.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As used herein, "electronic device" includes, but is not limited to, a device that is configured to receive/transmit communication signals via a wireline connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network, and/or via a wireless interface (e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another electronic device). Examples of electronic devices include, but are not limited to, satellite or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver.

Referring to fig. 1 to 3, in an embodiment, the electronic device 10 is a mobile phone, and the electronic device 10 includes a housing 100 and a display screen assembly 200, where the housing 100 serves as a rear case of the electronic device 10. In other alternative embodiments, the housing 100 may be a cover plate of the display screen assembly 200 in the electronic device 10. In the following description, the case 100 is described as an example of a rear case of a cellular phone.

In one embodiment, the housing 100 is made of glass fiber reinforced epoxy, and includes a main body portion 110 and a sidewall portion 120. The sidewall portion 120 is formed by extending the edge of the main body portion 110 such that the housing 100 has an open box shape. The thickness of the sidewall part 120 is greater than that of the main body part 110.

Specifically, as shown in fig. 4, the main body 110 includes an outer plate 111 and an inner plate 112. The side wall portion 120 includes an outer wall surface 121 and an inner wall surface 122. The outer wall surface 121 is connected to the outer panel surface 111, and the inner wall surface 122 is connected to the inner panel surface 112. The outer plate surface 111 and the outer wall surface 121 form an outer surface of the casing 100, and the inner plate surface 112 and the inner wall surface 122 form an inner surface of the casing 100.

As shown in fig. 4, in one embodiment, there is a smooth transition between the body portion 110 and the sidewall portion 120. It is understood that there is a smooth transition between the inner panel surface 112 and the inner wall surface 122, and/or a smooth transition between the outer wall surface 121 and the outer panel surface 111. Therefore, edges and corners of the main body 110 can be avoided, and the smoothness of the corners of the side wall 120 and the main body 110 can be ensured, so that the side wall 120 and the main body 110 have better visual effects when the housing 100 is viewed from the outside to the inside, and the hand feeling of a user is improved.

As shown in fig. 4, in one embodiment, the main body portion 110 and the sidewall portion 120 are perpendicular to each other. It is understood that the outer wall surface 121 is perpendicular to the outer panel surface 111, but there is no limitation between the inner panel surface 112 and the inner wall surface 122, i.e., the inner panel surface 112 and the inner wall surface 122 may be perpendicular or at an obtuse angle. As shown in fig. 5, in another embodiment, the main body portion 110 and the sidewall portion 120 form an obtuse angle therebetween. It is understood that the outer wall surface 121 and the outer plate surface 111 form an obtuse angle therebetween, but there is no limitation to the inner plate surface 112 and the inner wall surface 122, i.e., the inner plate surface 112 and the inner wall surface 122 may form an obtuse angle therebetween.

As shown in fig. 4, in one embodiment, the main body 110 has a flat plate shape. In another embodiment, as shown in fig. 6, the main body 110 has an arc-shaped curved surface, that is, the outer panel 111 has an arc-shaped curved surface, the inner panel 112 has the same shape as the outer panel 111, and the outer panel 111 is parallel to the inner panel 112. In other embodiments, the main body 110 is curved, and it is also understood that the outer panel 111 is curved and the inner panel 112 is flat, such that the main body 110 has a maximum thickness at the longitudinal center axis and a minimum thickness at both sides. The arc-shaped outer plate surface 111 of the main body 110 and the smoothly-transitioned corners at the two sides of the casing 100 together make the entire upper surface of the casing 100 be a curved surface shape, so that the whole casing is smooth, and the casing 100 has a more beautiful appearance and better hand feeling.

As shown in fig. 4, in one embodiment, the sidewall 120 is a flat plate, and the sidewall 120 has a uniform thickness. In another embodiment, as shown in fig. 7, the sidewall 120 is an arc-shaped plate, and the outer wall 121 is a curved surface, so that the entire space between the outer wall 121 and the outer plate 111 is smooth, and the outer appearance of the casing 100 is more beautiful and has better feel. The thickness of the side wall part 120 gradually increases from the main body part 110 to the end part of the side wall part 120, so that the thickness difference between the main body part 110 and the side wall part 120 is increased, the stereoscopic impression of the casing 100 is increased, and the aesthetic feeling of the casing 100 is improved.

The following description will be given taking a case where the main body 110 is a single rectangular plate glass. The sidewall portions 120 may be located at two opposite long sides of the main body portion 110, at two opposite short sides of the main body portion 110, and at the periphery of the main body portion 110, that is, the two long sides and the two short sides are both provided with the sidewall portions 120, so that the open box-shaped structure of the housing 100 can be realized.

By providing the sidewall 120 to make the casing 100 in an open box shape, when the mobile phone is assembled by using the casing 100, the battery (not shown), the main board (not shown), the display assembly 200, and other components of the mobile phone can be placed in the open box-shaped structure of the casing 100, without separately providing a middle frame. The distance H between one end of the side wall 120 away from the main body 110 and the main body 110 in a direction perpendicular to the main body 110 is 3.5mm to 8.5 mm. The H represents the depth of the case 100 having an open box structure, and the case 100 has a suitable depth, thereby ensuring that the battery, the main board, the display screen assembly 200, and other components of the mobile phone can be accommodated. Wherein the display panel assembly 200 is smoothly abutted with the sidewall 120 of the housing 100.

As shown in fig. 4 to 7, the thickness of the side wall part 120 is greater than that of the main body part 110. Compared with the case 100 with the same thickness, namely, the thickness of the sidewall 120 of the case 100 is equal to the thickness of the main body 110, the shape of the case 100 in the present application can be relatively more abundant, and has a higher identification degree. The thickness L2 of the main body 110 may be in the range of 0.6mm to 1.0mm, and the thickness L1 of the side wall 120 may be in the range of 1.5mm to 3.5 mm. It is understood that the thickness of the sidewall portion 120 refers to the overall thickness of the sidewall portion 120, and may be, for example, the average thickness of the sidewall portion 120. The thickness of the sidewall 120 may be different or the same. As shown in fig. 4, the thickness of the sidewall portion 120 is uniform; as shown in fig. 7, the thickness of the side wall part 120 may gradually increase in a direction away from the main body part 110. In the present application, the variation of the thickness of the sidewall 120 is not particularly limited.

The thickness of the sidewall 120 is relatively thick, and a structure matching with the motherboard and the display screen assembly 200 can be disposed on the inner side of the sidewall 120, so that the motherboard and the display screen assembly 200 can be directly mounted on the sidewall 120, and the structure of the mobile phone is simpler. Moreover, the thicker sidewall 120 facilitates the configuration of various shapes, such as different shapes of the sidewall 120 in fig. 4 and 7. The thickness of the body portion 110 is very thin and the main area on the housing 100 is the body portion 110, which makes the housing 100 relatively light in weight and fast in heat dissipation.

The inner surface of the case 100 is covered with a decorative layer. In one embodiment, a film may be formed on the inner surface of the casing 100 as a decoration layer by evaporation, and in other alternative embodiments, an ink may be sprayed on the inner surface of the casing 100, or a film may be adhered on the inner surface of the casing 100 to form a decoration layer. If the decoration layer is black, the inner structure of the mobile phone can be prevented from being seen through the casing 100, and the sidewall 120 and the main body 110 can be integrated into a single visual effect. Certainly, the decorative layer can also be provided with patterns to enhance the aesthetic property of the mobile phone rear shell.

A method of manufacturing a housing, comprising the steps of:

step a, putting glass fiber into liquid epoxy resin, and uniformly stirring;

step b, providing a mold 300 which comprises a male mold 310 and a female mold 320, wherein a cavity 330 is formed between the male mold 310 and the female mold 320 after the mold is closed;

and c, injecting epoxy resin containing glass fibers into the cavity 330 of the mold 300 and molding to obtain the shell 100 comprising the main body part 110 and the side wall part 120, wherein the thickness of the side wall part 120 is greater than that of the main body part 110.

As shown in fig. 8 to 10, in one embodiment, the male mold 310 and the female mold 320 are clamped to form a cavity 330, and the shape and size of the cavity 330 are the same as those of the housing 100. The structure of the product formed by the mold 300 is the same as the size of the shell 100 to be manufactured, and it can be understood that the shell 100 can be obtained by simple surface treatment, such as removing flash, polishing, etc., of the structure formed by the mold 300. The surfaces of the male die 310 and the female die 320 which are attached to each other after the dies are closed are die parting surfaces, and the die parting surfaces of the male die 310 and the female die 320 are flush with the end surface of the side wall part 120 which is far away from the main body part 110. It can be understood that the burrs and flashes of the product after the mold 300 is opened are located on the end surface of the side wall portion 120 away from the main body portion 110, and the grinding and deflashing are performed only on the end surface of the side wall portion 120, which has less influence on the smoothness of the outer surface of the case 100.

When the glass fiber plays a role in enhancing the epoxy resin, the length-diameter ratio of the glass fiber is required to be not less than 80, and it can be understood that the diameter of the glass fiber is 1um, and the length of the glass fiber is not less than 80 um. Glass fibers are not highly compatible with epoxy resins and therefore need to be activated before they can be impregnated with epoxy resins. Specifically, the glass fiber is wetted by a coupling agent or a compatilizer, the glass fiber is fully contacted with the coupling agent or the compatilizer, and then the wetted glass fiber is dried.

And (3) putting the activated glass fiber into liquid epoxy resin, and fully stirring to uniformly disperse the glass fiber in the epoxy resin. When the glass fiber is put into the epoxy resin, the amount of the glass fiber to be put in is not too much, since more glass fiber may affect the transparency of the epoxy resin product, and the specific amount of the glass fiber to be put in is determined according to the transparency requirement of the shell 100.

As shown in fig. 9 and 10, in an embodiment, an epoxy resin containing glass fiber is injected into the cavity 330 of the mold 300, cured and demolded to obtain the housing 100 including the main body portion 110 and the sidewall portion 120, wherein the thickness of the sidewall portion 120 is greater than that of the main body portion 110.

In one embodiment, the article from step c is further processed, including grinding and polishing the burrs of the outer surface of the article to conform to the requirements of the desired housing 100. The article is polished to obtain a smooth and transparent shell 100. A film may be formed on the inner surface of the casing 100 by evaporation to serve as a decoration layer, and in other alternative embodiments, ink may be sprayed on the inner surface of the casing 100, or a film may be adhered to the inner surface of the casing 100 to form a decoration layer. If the decoration layer is black, the inner structure of the mobile phone can be prevented from being seen through the casing 100, and the sidewall 120 and the main body 110 can be integrated into a single visual effect. Certainly, the decorative layer can also be provided with patterns to enhance the aesthetic property of the mobile phone rear shell.

The glass housing obtained by the hot bending method has the same thickness everywhere, i.e., the glass thickness of the bent side wall portion is equal to that of the straight plate portion. According to the technical scheme, the shell 100 is obtained by injection molding of the epoxy resin containing the glass fiber. The method greatly reduces the manufacturing difficulty and cost of the shell 100, the thickness of the main body part 110 of the obtained shell 100 is smaller than that of the side wall part 120, so that the curve of the shell is beautiful and the stereoscopic impression is strong, the aesthetic feeling and the hand feeling of the shell are improved, the outer surface of the shell 100 is smooth, and the user experience is better. The case 100 contains glass fibers therein, which can enhance the strength of the case 100.

As shown in fig. 1 and fig. 3, in an embodiment, the present application further provides an electronic device 10, a rear case of the electronic device 10 is the housing 100, the display panel assembly 200 is connected to the sidewall 120 of the housing 100, and the display panel assembly 200 covers a space enclosed by the sidewall 120 and the main body 110. The housing 100 replaces the rear cover and the middle frame, so that the electronic device 10 has a simple structure and is easy to assemble.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A method for manufacturing a housing, comprising the steps of,

step a, putting glass fiber into liquid epoxy resin, and uniformly stirring;

step b, providing a mold (300) which comprises a male mold (310) and a female mold (320), wherein a cavity (330) is formed between the male mold (310) and the female mold (320) after the mold is closed;

step c, injecting epoxy resin containing glass fiber into a cavity (330) of a mold (300) and molding to obtain a shell (100) comprising a main body part (110) and a side wall part (120), wherein the shell is a rear shell of the electronic device; wherein the thickness of the side wall part (120) is larger than that of the main body part (110); a decorative layer is provided on the inner surface of the case, and covers the inner surfaces of the main body (110) and the side wall (120).

2. The method of claim 1, wherein the glass fibers are activated before being placed in the liquid epoxy resin.

3. The method of manufacturing a housing according to claim 1, wherein the parting surfaces of the male die (310) and the female die (320) are flush with the end surfaces of the side wall parts (120) remote from the main body part (110).

4. The method of manufacturing a housing according to claim 1, wherein the main body portion (110) and the sidewall portion (120) are perpendicular or at an obtuse angle, and the main body portion (110) and the sidewall portion (120) are smoothly transitioned.

5. The method of manufacturing a casing according to claim 1, wherein the main body portion (110) has a flat plate shape or a curved arc shape.

6. The method of manufacturing a housing according to claim 1, wherein the sidewall portion (120) is a flat plate or an arc-shaped plate.

7. The method of manufacturing a housing according to claim 1, wherein the main body portion (110) has a thickness of 0.6mm to 1.0mm, and/or the side wall portion (120) has a thickness of 1.5mm to 3.5 mm.

8. The method of manufacturing a case according to claim 1, wherein the decorative layer is formed on the inner surface of the case by evaporation.

9. A housing, characterized in that it is manufactured according to the method of manufacturing a housing according to any one of claims 1-8, the side wall portion (120) being extended from the edge of the main body portion (110), the main body portion (110) and the side wall portion (120) having an open box shape.

10. An electronic device, characterized in that the electronic device comprises a display screen assembly (200) and a housing made by the method of any one of claims 1-8, wherein the display screen assembly (200) and the side wall portion (120) of the housing cooperate to cover a space enclosed by the main body portion (110) and the side wall portion (120).