CN112654192A

CN112654192A - Shell assembly, preparation method thereof and electronic equipment

Info

Publication number: CN112654192A
Application number: CN202011554649.XA
Authority: CN
Inventors: 周峰; 李聪; 李云刚
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-04-13

Abstract

The application provides a casing subassembly, including the microcrystalline glass casing, the microcrystalline glass casing includes the main part and sets up the extension at main part edge, the extension to the main part is buckled, the thickness of extension is inhomogeneous, and at least part the thickness of extension is greater than the thickness of main part. Through the extension that sets up the thickness change for the casing subassembly is not the uniform thickness casing subassembly, promotes casing subassembly's third dimension, improves casing subassembly's outward appearance effect, adopts the microcrystalline glass casing simultaneously, and the extension has the thickness that has at least partly thickness to be greater than the main part, and then has promoted casing subassembly's mechanical properties, and the microcrystalline glass casing can also prevent the expansion of crackle, improves casing subassembly's life. The application also provides a preparation method of the shell assembly and electronic equipment.

Description

Shell assembly, preparation method thereof and electronic equipment

Technical Field

The application belongs to the technical field of electronic products, and particularly relates to a shell assembly, a preparation method of the shell assembly and electronic equipment.

Background

With the continuous development of electronic devices, users have higher and higher requirements on the appearance effect of the electronic devices. Most of the existing appearance designs are changed from the aspect of the shell color of the electronic equipment, the design and improvement of the shell shape are less researched, and the shell homogenization phenomenon is serious.

Disclosure of Invention

In view of this, the application provides a shell assembly, a manufacturing method thereof and an electronic device, by arranging an extension part with a thickness variation, the shell assembly is made to be a shell assembly with different thicknesses, the stereoscopic impression of the shell assembly is improved, the appearance effect of the shell assembly is improved, meanwhile, a microcrystalline glass shell is adopted, and at least a part of the thickness of the extension part is larger than that of the main body part, so that the mechanical performance of the shell assembly is improved, the microcrystalline glass shell can also prevent cracks from expanding, and the service life of the shell assembly is prolonged.

In a first aspect, the present application provides a casing assembly, including the microcrystalline glass casing, the microcrystalline glass casing includes the main part and sets up the extension at main part edge, the extension to the main part is buckled, the thickness of extension is inhomogeneous, and at least part the thickness of extension is greater than the thickness of main part.

In a second aspect, the present application provides a method of making a housing assembly, comprising:

providing plate glass, carrying out hot extrusion on the plate glass to obtain a microcrystalline glass shell, wherein the plate glass is microcrystalline glass, or when the plate glass is non-microcrystalline glass, the hot extrusion comprises microcrystallization treatment, the microcrystalline glass shell comprises a main body part and an extension part arranged at the edge of the main body part, the extension part bends towards the main body part, the thickness of the extension part is uneven, and at least part of the thickness of the extension part is larger than that of the main body part.

In a third aspect, the present application provides an electronic device, including a display screen assembly and a housing assembly, the housing assembly includes a microcrystalline glass housing, including the microcrystalline glass housing, the microcrystalline glass housing includes a main body portion and an extension portion disposed at an edge of the main body portion, the extension portion bends toward the main body portion, a thickness of the extension portion is not uniform, and at least a portion of a thickness of the extension portion is greater than a thickness of the main body portion.

The application provides a housing assembly has the extension of thickness change through the setting for housing assembly is not the shell assembly of uniform thickness, promotes housing assembly's third dimension, improves housing assembly's outward appearance effect, adopts the microcrystalline glass casing simultaneously, and the extension has the thickness that has at least partly thickness to be greater than the main part, and then has promoted housing assembly's mechanical properties, and the microcrystalline glass casing can also prevent the extension of crackle, improves housing assembly's life. The preparation method of the shell assembly is simple, easy to operate and low in cost, and industrial production can be realized. The electronic equipment with the shell assembly has the advantages that the stereoscopic impression is strong, the expressive force of the product is enhanced, meanwhile, the integral strength is increased, the service life is long, and the use requirement can be met.

Drawings

In order to more clearly explain the technical solution in the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be described below.

Fig. 1 is a schematic view of a housing assembly according to an embodiment of the present disclosure.

Fig. 2 is a schematic cross-sectional view of a housing assembly according to an embodiment of the present application.

Fig. 3 is a schematic cross-sectional view of a housing assembly provided in accordance with another embodiment of the present application.

Fig. 4 is a schematic cross-sectional view of a housing assembly provided in accordance with another embodiment of the present application.

Fig. 5 is a schematic cross-sectional view of a housing assembly provided in accordance with another embodiment of the present application.

Fig. 6 is a schematic cross-sectional view of a housing assembly provided in accordance with another embodiment of the present application.

Fig. 7 is a schematic cross-sectional view of a housing assembly provided in accordance with another embodiment of the present application.

Fig. 8 is a schematic cross-sectional view of a housing assembly provided in accordance with another embodiment of the present application.

Fig. 9 is a schematic cross-sectional view of a housing assembly provided in accordance with another embodiment of the present application.

Fig. 10 is a schematic cross-sectional view of a housing assembly provided in accordance with another embodiment of the present application.

Fig. 11 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 12 is an enlarged cross-sectional view taken along line a-a of fig. 11.

Description of reference numerals:

the glass ceramic display panel comprises a glass ceramic shell body-10, a main body part-11, an extension part-12, a first surface-111, a second surface-112, a third surface-121, a fourth surface-122, a first end surface-123, a decoration layer-20, a shell assembly-100 and a display screen assembly-200.

Detailed Description

The following is a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present application, and these improvements and modifications are also considered as the protection scope of the present application.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1, a schematic view of a housing assembly according to an embodiment of the present disclosure is shown, and referring to fig. 2, a schematic cross-sectional view of the housing assembly according to the embodiment of the present disclosure is shown, wherein the housing assembly 100 includes a microcrystalline glass housing 10, the microcrystalline glass housing 10 includes a main body portion 11 and an extension portion 12 disposed at an edge of the main body portion 11, the extension portion 12 is bent toward the main body portion 11, a thickness of the extension portion 12 is not uniform, and a thickness of at least a portion of the extension portion 12 is greater than a thickness of the main body portion 11. In the present application, the thickness of the extension portion 12 is not uniform, so that the shell assembly 100 is a shell assembly with different thicknesses, thereby enhancing the stereoscopic impression of the shell assembly 100, improving the appearance effect of the shell assembly 100, and avoiding homogenization; meanwhile, the mechanical performance of the shell assembly 100 can be greatly improved by adopting the microcrystalline glass shell 10, the microcrystalline glass shell 10 can block the expansion of cracks, and the thickness of at least one part of the extension part 12 is larger than that of the main body part 11, so that the strength of the shell assembly 100 is further enhanced; therefore, the housing assembly 100 provided by the present application has excellent impact resistance, drop resistance and scratch resistance, and is more advantageous for application.

In the present application, the microcrystalline glass casing 10 includes a main body portion 11 and an extension portion 12 provided at an edge of the main body portion 11, and a thickness of the extension portion 12 is not uniform, that is, a thickness of the extension portion 12 varies in an extending direction of the extension portion 12. By providing the extension portion 12 with uneven thickness, the appearance of the microcrystalline glass shell 10 and the shell assembly 100 is improved, and the stereoscopic impression is improved. It is understood that the extending direction of the extending portion 12 is a direction away from the main body portion 11. In the present embodiment, the main body portion 11 and the extension portion 12 are of an integral structure. Therefore, the stable and reliable connection of the main body part 11 and the extension part 12 is ensured, the impact resistance of the connection part of the main body part 11 and the extension part 12 is improved, and the stability and the reliability of the whole structure are improved.

In the present application, the thickness of at least part of the extension 12 is greater than the thickness of the main body 11; that is, the thickness of at least a portion of the extension portion 12 is greater than the thickness of the main body portion 11, so that the strength of at least a portion of the extension portion 12 is greater than the strength of the main body portion, which is beneficial to improving the mechanical properties of the housing assembly 100, such as impact resistance, drop resistance, and the like. In one embodiment of the present application, the main body 11 is of unequal thickness, and at least a portion of the extension 12 has a thickness greater than the minimum thickness of the main body 11. In another embodiment of the present application, the thickness of the extension portion 12 gradually increases along the extension direction of the extension portion 12, or the thickness of the extension portion 12 increases first and then decreases, or the thickness of the extension portion 12 increases first and then does not change. Therefore, the thickness of the extension part 12 is not less than that of the connection position of the extension part 12 and the main body part 11, the overall strength of the extension part 12 is higher than that of the connection position of the extension part 12 and the main body part 11, and the impact resistance and the falling resistance of the shell assembly 100 at the position of the extension part 12 are improved. Among the correlation technique, the shell subassembly of uniform thickness is falling easily, is colliding with the in-process and is broken, through the thickness that changes extension 12 in this application to carry out the reinforcement to the side of shell subassembly 100, increase shell subassembly 100's mechanical properties. Referring to fig. 2, the thickness of the extension portion 12 gradually increases along the extension direction of the extension portion 12. That is, the extension portion 12 continuously increases in thickness from the junction of the extension portion 12 and the main body portion 11, improving the impact resistance of the extension portion 12. Referring to fig. 3, a cross-sectional view of a housing assembly according to another embodiment of the present application is substantially the same as that of fig. 2, except that the thickness of the extension portion 12 is increased and then decreased along the extension direction of the extension portion 12. That is, the extension portion 12 gradually increases in thickness from the junction of the extension portion 12 and the main body portion 11, and after reaching the maximum thickness, the thickness starts to decrease. Referring to fig. 4, a cross-sectional view of a housing assembly according to another embodiment of the present application is substantially the same as that of fig. 2, except that the thickness of the extension portion 12 is increased along the extension direction of the extension portion 12. That is, the extension portion 12 gradually increases in thickness from the junction of the extension portion 12 and the main body portion 11, and continues to extend with the thickness remaining unchanged after reaching the maximum thickness. In the present application, along the extending direction of the extending portion 12, the thickness of the extending portion 12 gradually increases, or when the thickness of the extending portion 12 increases first and then does not change, the end surface of the extending portion 12 is relatively larger, and when the electronic device is applied, the area attached to the middle frame or the front cover is larger, so that the electronic device is more easily matched with the middle frame or the front cover for use, and the reliability of the electronic device is improved.

In the present embodiment, the rate of change in thickness of the extended portion 12 in the direction of extension of the extended portion 12 is less than 30%. It will be appreciated that the rate of change in thickness is the ratio of the difference in thickness before and after the change to the thickness before the change. Along the extending direction of the extending part 12, when the thickness of the extending part 12 is changed too much, the positions before and after the change have obvious thickness difference, and when the external acting force is applied, the external acting force is more easily concentrated at the positions and is damaged; therefore, the thickness variation rate of the extension portion 12 is less than 30% in the extension direction of the extension portion 12, so that the thickness variation of the extension portion 12 is more gradual and the shock resistance of the housing assembly 100 is ensured. Further, the rate of change in thickness of the extended portion 12 in the extending direction of the extended portion 12 is less than 25%. Further, the thickness variation rate of the extension portion 12 in the extension direction of the extension portion 12 is 5% to 20%. Specifically, the thickness variation rate of the extension portion 12 in the extension direction of the extension portion 12 may be, but is not limited to, 5%, 8%, 10%, 15%, 18%, 19%, or the like.

In the present embodiment, the minimum thickness of the extension portion 12 is not less than the thickness of the main body portion 11. Therefore, the extension part 12 can buffer more impact force when the shell assembly 100 falls and collides, and the structural integrity is ensured. In one embodiment, when the thickness of the extension portion 12 increases and then decreases in the direction in which the extension portion 12 extends, the minimum thickness of the extension portion 12 is not less than the thickness of the main body portion 11. In another embodiment, when the thickness of the main body portion 11 is not uniform, the minimum thickness of the extension portion 12 is not less than the maximum thickness of the main body portion 11. Thus ensuring that the increase in thickness of the extension 12 is beneficial to improving the mechanical performance of the overall structure.

In the present embodiment, the extension 12 has a thickness of 0.55mm to 3 mm. Therefore, the extension portion 12 can effectively resist external acting force, the shock resistance is improved, the microcrystalline glass shell 10 with stereoscopic impression can be presented obviously, and meanwhile, the thickness of the shell assembly 100 is not increased too much. Further, the thickness of the extension 12 is 0.6mm to 2.8 mm. Further, the thickness of the extension 12 is 0.8mm to 2.5 mm. Specifically, the thickness of the extension 12 may be, but is not limited to, 0.55mm, 0.7mm, 0.8mm, 1mm, 1.2mm, 1.5mm, 1.8mm, 2mm, 2.3mm, 2.5mm, 2.7mm, or 2.9 mm.

In the present embodiment, the thickness of the body portion 11 is 0.5mm to 1 mm. The shock resistance requirement can be met, the thickness is not too thick, and the requirements of lightness and thinness are met. Further, the thickness of the body portion 11 is 0.6mm to 0.95 mm. Further, the thickness of the body portion 11 is 0.65mm to 0.8 mm. Specifically, the thickness of the body portion 11 may be, but is not limited to, 0.55mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, or 1 mm.

In the embodiment of the present application, please refer to fig. 5, which is a schematic cross-sectional view of a housing assembly according to another embodiment of the present application, wherein the main body 11 includes a first surface 111 and a second surface 112 disposed opposite to each other, the extension 12 includes a third surface 121 and a fourth surface 122 disposed opposite to each other, the first surface 111 is connected to the third surface 121, the second surface 112 is connected to the fourth surface 122, and the extension 12 is bent toward a direction close to the first surface 111.

In one embodiment of the present application, the fourth surface 122 is a curved surface. Compared with the case that the fourth surface 122 is a plane, when the fourth surface 122 is a curved surface, the first surface 111 smoothly transitions to the fourth surface 122, and the main body portion 11 and the extension portion 12 are connected in an arc shape, so that the force bearing area is larger, and the impact force buffering effect is better.

In the present application, the first surface 111 may be a curved surface or a plane; the second surface 112 may be a curved surface or a plane; the third surface 121 may be a curved surface or a flat surface. Thereby providing the housing assembly 100 with a different appearance effect.

In an embodiment of the present application, please refer to fig. 5, wherein the first surface 111 and the second surface 112 of the main body 11 are both flat surfaces, and the main body 11 is flat, so that the strength of each position of the main body 11 is equal, the external force can be uniformly dispersed when the external impact force is applied, and simultaneously, the propagation of cracks generated by the external impact force is further prevented by the action of the microcrystals in the microcrystalline glass, and the stability of the structure is maintained. In one embodiment, the thickness of the flat plate-shaped body portion 11 is uniform.

Referring to fig. 6, a schematic cross-sectional view of a housing assembly according to another embodiment of the present disclosure is substantially the same as that of fig. 2, except that the first surface 111 and the second surface 112 of the main body 11 are both curved surfaces, and the main body 11 is curved, so as to greatly improve the stereoscopic impression of the main body 11, and further increase the size of the accommodating space defined between the first surface 111 and the third surface 121, which is beneficial to providing more internal space in the subsequent application. In one embodiment, the thickness of the body portion 11 is uniform; that is, the first surface 111 and the second surface 112 are equally spaced at any position, i.e., the first surface 111 and the second surface 112 are bent to the same degree at any position. In another embodiment, the thickness of the body portion 11 is not uniform; that is, the first surface 111 and the second surface 112 have a difference in the interval therebetween, i.e., the first surface 111 and the second surface 112 have a difference in the degree of bending.

Please refer to fig. 7, which is a schematic cross-sectional view of a housing assembly according to another embodiment of the present disclosure, and is substantially the same as fig. 2, except that the first surface 111 of the main body 11 is a plane, and the second surface 112 is a curved surface, so that the main body 11 has a non-uniform thickness, and can bear more external acting force at a thicker position, thereby improving the mechanical performance of the main body 11, and meanwhile, the curved second surface 112 improves the stereoscopic impression of the main body 11, and the planar first surface 111 ensures the flatness of the surface, so that the planar first surface 111 is more easily attached to other components during subsequent applications. Further, the thickness of the body portion 11 is largest at the longitudinal center axis and smallest at both sides.

Please refer to fig. 8, which is a schematic cross-sectional view of a housing assembly according to another embodiment of the present disclosure, and is substantially the same as fig. 2, except that the first surface 111 of the main body 11 is a curved surface and the second surface 112 is a flat surface, so that the thickness of the main body 11 is not uniform. In one embodiment, the body portion 11 has a minimum thickness at the longitudinal center axis and a maximum thickness on both sides. Therefore, the thickness of the position where the extension part 12 is connected is the largest, stable connection with the extension part 12 is guaranteed, impact resistance of the connection position is improved, the thickness of the position far away from the connection position is small, the weight of the main body part 11 can be reduced, and the realization of thinning is facilitated.

In one embodiment of the present application, please refer to fig. 5, the third surface 121 is a curved surface. Thereby providing a smooth transition between the third surface 121 and the first surface 111 and improving the smoothness of the surfaces of the microcrystalline glass housing 10 and the housing assembly 100. In an embodiment, the third surface 121 and the fourth surface 122 are both curved surfaces, and the main body portion 11 and the extending portion 12 are in smooth transition, so that the surfaces of the microcrystalline glass shell 10 and the shell assembly 100 are smooth and have a better hand feeling.

In an embodiment of the present application, referring to fig. 5, the extension portion 12 further includes a first end surface 123, and the first end surface 123 connects the third surface 121 and the fourth surface 122. In one embodiment, the first end face 123 is planar. Further, the first end face 123 is parallel to the first surface 111 or the second surface 112. In this application, the setting of planar first terminal surface 123 can make can the subassembly use with other structure cooperations better, and overall structure's mechanical properties is good. In another embodiment, the first end surface 123 is a curved surface. In yet another embodiment, the first end face 123 is a connecting line, i.e. the third surface 121 and the fourth surface 122 intersect. In another embodiment, along the extending direction of the extending portion 12, the thickness of the extending portion 12 gradually increases or the thickness of the extending portion 12 increases first and then does not change, and the first end surface 123 is provided with a decoration layer. Along with the gradual increase of the thickness of the extension portion 12, the area of the first end surface 123 is larger, and it is more convenient to arrange a modification layer on the surface thereof, for example, a color layer is arranged, so that the appearance effect of the housing assembly 100 is improved.

Referring to fig. 9, a cross-sectional view of a housing assembly according to another embodiment of the present disclosure is shown, wherein H is a distance between the first surface 111 and the first end face 123. In one embodiment, the spacing H between the first surface 111 and the first end face 123 is 0.5mm to 8 mm. Further, the distance H is 1mm-7 mm. Further, the spacing H is 1.5mm to 6 mm. Specifically, the spacing H may be, but is not limited to, 0.8mm, 1.5mm, 2mm, 3mm, 4mm, 5mm, or 6.5 mm. The distance H is a depth of the receiving space defined between the first surface 111 and the third surface 121. Through setting up foretell interval for when casing assembly 100 used in electronic equipment, can have the space that holds electronic components, and the interval undersize, the third dimension effect of microcrystalline glass casing 10 is not obvious, and the interval is too big, can increase thickness when electronic equipment uses, and is frivolous feelings weak. Furthermore, the extension portion 12 is provided with a through hole. So that a key or the like can be mounted on the extension 12. In one embodiment, the spacing H is 4mm to 8 mm. Therefore, the shell assembly 100 can omit the arrangement of the middle frame when being applied to the electronic equipment, and the process flow is saved.

Referring to fig. 9, an intersection line is formed between the fourth surface 122 of the extending portion 12 and the first end face 123, a connection line is formed between the fourth surface 122 of the extending portion 12 and the second surface 112, and an outer included angle between a tangent of the fourth surface 122 at the intersection line and a tangent of the fourth surface 122 at the connection line is α. It is understood that the outer included angle α is an included angle on a side away from the microcrystalline glass casing 10. In one embodiment, the outer included angle α is not greater than 90 °. Therefore, in the extending process of the extending part 12, the bending angle of the fourth surface 122 is larger, and the bending tendency towards the main body part 11 is better, slower and more stable; when the shell assembly 100 falls or collides, the stressed area of the extension portion 12 is small relative to the main body portion 11, and the bending tendency of the fourth surface 122 is more moderate, so that the stressed area can be increased as much as possible, the gathering of external acting force can be dispersed, and the shell assembly 100 can be prevented from being broken. In one embodiment, as shown in FIG. 2, the included angle is less than 90. Further, the outer included angle α satisfies: alpha is more than or equal to 20 degrees and less than or equal to 90 degrees. Further, the outer included angle α satisfies: alpha is more than or equal to 30 degrees and less than or equal to 80 degrees. In another embodiment, the outer included angle α is greater than 90 °. As shown in fig. 3, the outer included angle is now greater than 90 °. Further, the outer included angle α satisfies: alpha is more than or equal to 100 degrees and less than or equal to 170 degrees. Further, the outer included angle α satisfies: alpha is more than or equal to 120 degrees and less than or equal to 160 degrees.

Referring to fig. 2, the extending portions 12 are disposed at two opposite ends of the main body portion 11 to improve the aesthetic appearance of the housing assembly 100. For example, when the housing assembly 100 is used as a protective housing, the electronic device is clamped in the receiving space between the first surface 111 and the third surface 121, and the housing assembly 100 can protect the electronic device and buffer an external force acting on the electronic device. In another embodiment, the extension 12 is disposed around the body 11. Therefore, when the shell assembly 100 is applied to the electronic device, the arrangement of the middle frame can be omitted, materials and process flows are saved, or when the shell assembly 100 is used as a protective shell, the side wall of the electronic device can be comprehensively protected.

In the present application, the housing assembly 100 includes a microcrystalline glass housing 10; the glass-ceramic is also called as glass-ceramic jade or ceramic glass, and has the double characteristics of glass and ceramic, the glass-ceramic is composed of crystals, the arrangement of internal atoms is regular, and the glass-ceramic has higher brightness than ceramic and stronger toughness than glass. By using the microcrystalline glass housing 10, the mechanical properties of the housing assembly 100, such as hardness, fracture toughness, etc., are greatly improved. In the embodiment of the present application, the microcrystalline glass housing 10 has microcrystalline particles, and the microcrystalline particles can block the propagation of glass cracks, thereby improving the stability and reliability of the overall structure of the housing assembly 100. In one embodiment, the diameter of the microcrystalline particles is between 30nm and 100 nm. Thereby ensuring the permeability of the microcrystalline glass shell 10 and facilitating the application thereof. Furthermore, the diameter of the microcrystal particles is 40nm-90 nm. Further, the diameter of the microcrystalline particles is 50nm to 80 nm. Specifically, the diameter of the microcrystalline particles is 40nm, 45nm, 55nm, 60nm, 70nm, 85nm or 95 nm. In the present application, the microcrystalline glass may have microcrystalline particles of a microcrystalline phase and a glass phase, wherein the microcrystalline particles are uniformly dispersed in the microcrystalline glass shell 10, and when the microcrystalline glass shell 10 is subjected to an external impact force to generate a crack, the further expansion of the crack may be effectively blocked, and the structural integrity of the microcrystalline glass shell 10 is maintained.

In one embodiment of the present application, the microcrystalline glass enclosure 10 has an average transmittance of greater than 88% over the full spectrum. At this time, the microcrystalline glass may have excellent permeability, and may be combined with other layer structures to improve the appearance of the housing assembly 100. Specifically, the microcrystalline glass housing 10 has a full-spectrum average transmittance of greater than 90%, 92%, 94%, 95%, or 96%. In another embodiment of the present application, the haze of the microcrystalline glass enclosure 10 is 60% to 95%. Therefore, the housing assembly 100 has a hazy visual effect and an anti-glare effect, and the appearance performance of the housing assembly 100 is improved. Further, the haze of the microcrystalline glass shell 10 is 68% to 85%. Further, the haze of the microcrystalline glass shell 10 is 72% to 83%. Specifically, the haze of the crystallized glass shell 10 may be, but is not limited to, 63%, 65%, 70%, 75%, 80%, 85%, 92%, or 95%. In yet another embodiment of the present application, the second surface 112 has a surface roughness of 0.3 μm to 5 μm. Thereby causing the second surface 112 to have an anti-glare effect and the touch feeling of the second surface 112 to be enhanced. Further, the second surface 112 has a surface roughness of 0.7 μm to 5 μm. Further, the second surface 112 has a surface roughness of 1.5 μm to 4.5. mu.m. Specifically, the surface roughness of the second surface 112 may be, but is not limited to, 1 μm, 1.6 μm, 2 μm, 2.3 μm, 2.5 μm, 3 μm, 3.5 μm, 4.7 μm, or 5 μm.

In the present embodiment, the glass ceramic case 10 is tempered glass. In one embodiment, the second surface 112 and the fourth surface 122 have a strengthening layer. Thereby promoted housing assembly 100's intensity, the intensity of extension 12 further increases simultaneously, improves housing assembly 100's structural stability, can also play stronger the expansion of crack and block renting falling, colliding with the in-process simultaneously, prevents the crack diffusion, improves the reliability of structure. In particular, the thickness of the strengthening layer may be, but is not limited to, 10 μm to 150 μm.

In the embodiment of the present application, the housing assembly 100 further includes a decoration layer 20, and the decoration layer 20 is disposed on the surface of the microcrystalline glass housing 10. By providing the decorative layer 20, the appearance of the housing assembly 100 is further enhanced. Referring to fig. 10, a cross-sectional view of a housing assembly according to another embodiment of the present disclosure is shown, in which the housing assembly 100 includes a laminated microcrystalline glass housing 10 and a decoration layer 20 disposed on the microcrystalline glass housing 10, and the decoration layer 20 is disposed on a surface of the microcrystalline glass housing 10. In one embodiment, the decorative layer 20 is disposed on at least one of the first surface 111, the second surface 112, the third surface 121, and the fourth surface 122. Thereby greatly improving the appearance of the housing assembly 100. In one embodiment, as shown in fig. 10, decorative layer 20 is disposed on first surface 111 and third surface 121. In another embodiment, decorative layer 20 includes at least one of a color layer, a texture layer, and an optical film layer. When the full-spectrum average transmittance of the microcrystalline glass housing 10 is greater than 88%, the decorative layer 20 may be disposed on at least one of the first surface 111, the second surface 112, the third surface 121, and the fourth surface 122. In the present application, decorative layers 20 with different appearance effects, such as different colors, different textures, different refractive indexes, etc., may be disposed on the main body portion 11 and the extension portion 12. In one embodiment, the decorative layer 20 includes at least one of a texture layer and an optical film layer, and a color layer, so that the appearance effect of the texture layer and the optical film layer is displayed by the contrast of the color layer; for example, a color layer may be disposed on the first surface 111 and/or the third surface 121, and a texture layer and/or an optical film layer may be disposed on the second surface 112 and/or the fourth surface 122; as another example, a color layer may be disposed on the first surface 111 and/or the third surface 121, and accordingly, a texture layer and/or an optical film layer may be disposed between the first surface 111 and/or the third surface 121 and the color layer. Further, the optical transmittance of the color layer is less than 1%, so that one side of the housing assembly 100 can be optically shielded, and shielding of components inside the electronic device is facilitated when the electronic device is applied. When the microcrystalline glass shell 10 has the anti-glare effect, the color layer is disposed on the first surface 111 and/or the third surface 121, so that the shell assembly 100 can obviously present the anti-glare effect on the second surface 112 side, and the influence of the color layer on the anti-glare effect is avoided; the texture layer and the optical film layer can be arranged according to the requirement.

The application provides a housing assembly 100 both has the high strength and the impact resistance of microcrystalline glass housing 10, and the thickness of extension 12 is inhomogeneous simultaneously, and the third dimension of housing assembly 100 strengthens, and vision and outward appearance effect promote, are favorable to its application.

The present application also provides a method for preparing a housing assembly 100 according to any of the above embodiments, comprising:

providing plate glass, carrying out hot extrusion on the plate glass to obtain a microcrystalline glass shell, wherein the plate glass is microcrystalline glass, or the hot extrusion comprises microcrystallization treatment when the plate glass is non-microcrystalline glass, the microcrystalline glass shell comprises a main body part and an extension part arranged at the edge of the main body part, the extension part is bent towards the main body part, the thickness of the extension part is uneven, and the thickness of at least part of the extension part is larger than that of the main body part.

In this application, through carrying out hot extrusion with sheet glass, obtain the microcrystalline glass casing 10 that has main part 11 and extension 12, main part 11 and extension 12 integrated into one piece promote overall structure's reliability, extension 12 has the thickness that has at least partly is greater than main part 11, improve casing assembly 100's mechanical properties, microcrystalline glass casing 10 has high strength, high rigidity and high anti-scratch ability simultaneously, and can block the extension of crackle in casing assembly 100, improve the stability of structure.

In one embodiment of the present application, when the plate glass is a non-microcrystalline glass, the method for preparing the non-microcrystalline glass includes providing glass raw materials, mixing, melting, forming, and annealing to obtain the non-microcrystalline glass. Wherein, the annealing can eliminate the internal stress and improve the stability. In another embodiment of the present application, when the plate glass is a glass-ceramic, the method for preparing the glass-ceramic comprises providing glass raw materials, mixing, melting, forming, annealing, and microcrystallizing to obtain the glass-ceramic. Among them, annealing is advantageous for crystallization and for microcrystallization.

In one embodiment of the present application, a crystal nucleus agent is included in the glass raw material, so that the generation of microcrystalline particles during the preparation of the microcrystalline glass or during the microcrystallization in hot extrusion can be facilitated. Specifically, the crystal nucleating agent may be, but not limited to, zirconium dioxide, titanium dioxide, and the like. In another embodiment of the present application, the glass raw material may include silica, alumina, and a crystal nucleating agent. Further, the glass raw material may include silica, alumina, and a crystal nucleus agent. Further, the glass raw material may include silica, alumina, zirconia, phosphorus pentoxide, sodium oxide, lithium oxide, and magnesium oxide. Wherein, the silicon dioxide is the main part for forming the microcrystalline glass and constructing the network structure of the microcrystalline glass, and is also the important composition of a plurality of microcrystals; the alumina is an important component for constructing the microcrystalline glass network structure, so that the microcrystalline glass network structure is reinforced, and the stability and strength of the microcrystalline glass are further improved; the zirconium dioxide as a crystal nucleating agent can improve the crystallization capacity and can produce a large amount of fine and uniform crystals in a short microcrystallization process; the phosphorus pentoxide is connected into a network by phosphorus-oxygen tetrahedrons, so that the whole microcrystalline glass network structure is in a loose state, and gaps are enlarged, thereby being beneficial to the mutual diffusion of ions. Meanwhile, phosphorus pentoxide can promote the solubility of zirconium dioxide in the glass raw material melt, so that the components of the glass raw material melt are more uniformly dispersed during melting; the sodium oxide and the lithium oxide belong to alkali metal oxides, so that the high-temperature viscosity of the glass can be adjusted, the glass smelting difficulty is reduced, and meanwhile, the microcrystalline glass has certain chemical strengthening capacity; the magnesium oxide can be used as a component of crystals, so that the microcrystallization capacity is improved, the smelting difficulty is reduced, and the hardness of the microcrystalline glass is improved. In one embodiment, the glass raw material comprises, in mole percent, 60% to 70% of silicon dioxide, 5% to 13% of aluminum oxide, 0.5% to 4% of zirconium dioxide, 0.5% to 7% of phosphorus pentoxide, 0.5% to 5% of sodium oxide, 0.5% to 8% of lithium oxide, and 0.5% to 3% of magnesium oxide. Wherein, too low a content of silicon dioxide may reduce the strength and chemical stability of the glass-ceramic, and may also cause a change in the composition of the crystalline phase, while a higher content of silicon dioxide is required to ensure the uniformity of the subsequent crystal precipitation.

In an embodiment of the present application, the melting may include holding at 1300 ℃ to 1600 ℃ for 0.5h to 4h, and the annealing may include treating at 500 ℃ to 1200 ℃ for 20min to 150 min. Specifically, the shape of the plate glass can be selected as needed, and the shape of the plate glass can be selected as needed. In one embodiment of the present application, the micro-crystallization process includes a nucleation process and a crystallization process; the temperature of the nucleation process is 500-900 ℃, and the heat preservation time is 5-60 min; the temperature of the crystallization process is 800-1200 ℃, and the heat preservation time is 5-75 min. Furthermore, the temperature of the nucleation process is 600-850 ℃, and the heat preservation time is 15-50 min. Furthermore, the temperature in the crystallization process is 900-1100 ℃, and the heat preservation time is 10-60 min. At this time, the microcrystallization process is microcrystallization in a process of producing a crystallized glass or microcrystallization in a process of hot extrusion. In another embodiment of the present application, the method further comprises subjecting the flat glass to CNC machining. Specifically, the flat glass may be, but is not limited to, CNC-machined into a rectangular body and has four circular arc angles.

In an embodiment of the present application, hot pressing a flat glass includes: and carrying out hot extrusion on the plate glass by adopting a hot extrusion die, wherein the hot extrusion die is provided with a containing cavity, and the containing cavity is used for containing the plate glass. Specifically, the proper matching gap between the plate glass and the mold can be calculated according to the thermal expansion coefficient, so that the integral inclination caused by the fact that the plate glass cannot be flatly placed when the gap is too small is prevented; or when the gap is too large, the flat glass inclines towards one side, so that the extrusion is not uniform during hot extrusion, and the shape is asymmetric after molding. It will be appreciated that the corresponding hot extrusion die is selected according to the desired shape of the body portion 11 and the extension portion 12.

In one embodiment of the present application, when the plate glass is a non-microcrystalline glass, the hot extrusion process includes preheating and microcrystallization. In another embodiment of the present application, when the sheet glass is a non-microcrystalline glass, the hot extrusion process includes preheating and hot bending.

In one embodiment of the application, the preheating comprises keeping the temperature at 300-700 ℃ for 5-90 min, so that the flat glass is heated at high temperature to be softened and deformed. Further, the heating comprises heat preservation at 300-600 ℃ for 10-70 min. If the subsequent microcrystallization treatment operation is carried out, the heating temperature and the heat preservation time can be relatively reduced. In one embodiment, the microcrystallization process includes a nucleation process and a crystallization process; the temperature of the nucleation process is 500-900 ℃, and the heat preservation time is 5-60 min; the temperature of the crystallization process is 800-1200 ℃, and the heat preservation time is 5-75 min. The crystallization temperature is higher than the softening point of the flat glass, thereby facilitating the flow of the glass under extrusion. Furthermore, the temperature of the nucleation process is 600-850 ℃, and the heat preservation time is 15-50 min. Furthermore, the temperature in the crystallization process is 900-1100 ℃, and the heat preservation time is 10-60 min. Through the microcrystallization process, the non-microcrystalline glass is changed into microcrystalline glass, and in the process, the microcrystalline glass is heated and extruded in the accommodating cavity and flows in the accommodating cavity, so that the hot extrusion is performed in the microcrystallization process, and the main body part 11 and the extension part 12 are favorably formed. In one embodiment, the microcrystallization treatment comprises maintaining the temperature at 800-1200 deg.C and 0.2-0.9 MPa for 5-75 min. If the pressure is too low in the microcrystallization treatment, the flow is insufficient, the plate glass cannot be subjected to hot extrusion molding, the pressure is too high, the extrusion flow amplitude is too large, the plate glass is deformed too much, and the edge flash is serious; therefore, the process conditions are adopted to facilitate the molding of the microcrystalline glass shell 10 with different thicknesses. In another embodiment of the present application, the hot bending treatment comprises holding at 500-600 deg.C for 5-60 min. In the present application, when the plate glass is microcrystallized glass, the hot bending process does not need to be carried out at a high temperature, and the hot bending temperature is lower than the microcrystallization temperature; compared with the hot bending process, the micro crystallization process can realize micro crystal forming and hot extrusion at the same time, and is more favorable for realizing the preparation of shell assemblies with different thicknesses.

In the embodiment of the application, the hot extrusion die comprises a female die and a male die which are oppositely arranged, and an accommodating cavity is arranged between the female die and the male die. In the application, the surface roughness of the concave die and/or the convex die is controlled, so that the prepared glass ceramics can have the anti-glare effect. In one embodiment, the surface roughness of the female and/or male dies of the hot extrusion die is 0.3 μm to 5 μm. Therefore, the anti-glare effect can be realized in the hot extrusion process, the microcrystalline glass shell 10 with the anti-glare effect is obtained, and the visual effect and the use performance of the shell assembly 100 are improved; meanwhile, the anti-dazzle effect is avoided being realized through chemical etching and other modes, the environment is protected, and the controllability of the anti-dazzle effect is higher. In one embodiment of the present application, the male mold of the hot extrusion mold is in contact with the first surface 111 and the third surface 121 of the crystallized glass shell 10, and the female mold is in contact with the second surface 112 and the fourth surface 122 of the crystallized glass shell 10. In one embodiment, when the surface roughness of the male mold is 0.476 μm, 1.312 μm, 3.245 μm, respectively, the surface roughness of the first surface 111 and the third surface 121 corresponds to 0.488 μm, 1.353 μm, 3.313 μm. In another embodiment, when the surface roughness of the female mold is 0.485 μm, 1.203 μm, 3.478 μm, respectively, the surface roughness of the second surface 112 and the fourth surface 122 is 0.496 μm, 1.119 μm, 3.396 μm, respectively. Therefore, the surface roughness of the concave die and/or the convex die can be controlled, so that the prepared glass ceramics can have the anti-dazzle effect.

In the embodiment of the application, the hot extrusion is further followed by annealing and cooling treatment. In one embodiment, the annealing comprises treating at 500-1200 ℃ for 20-150 min, and cooling for 5-90 min. Further, the annealing comprises the step of treating at 500-800 ℃ for 30-120 min, and the cooling treatment time is 10-70 min. In the annealing process, the warping degree of the product is controlled by adjusting the temperature of the hot extrusion die, and the strength reduction caused by overhigh temperature difference of the two opposite sides of the microcrystalline glass is avoided. Further, the temperature difference between two opposite sides of the microcrystalline glass is not more than 100 ℃ in the annealing process.

In the preparation process, each processing process can be set into a plurality of workstations, so that the hot extrusion dies can sequentially enter the corresponding workstations, thereby realizing streamlined operation; and each process is provided with a plurality of working stations, so that the residence time of the hot extrusion die in each working station is short, the rapid flow production is realized, and the industrial production is facilitated.

In the embodiment of the present application, CNC machining is further performed on the microcrystalline glass shell 10 to smooth the first end surface 123 of the extension portion 12 in the microcrystalline glass shell 10. In the embodiment of the present application, polishing process is further performed on the microcrystalline glass shell 10 to obtain the shell assembly 100 with a desired roughness, and the residual grain of the CNC machining is removed. In an embodiment, the first end face 123 of the microcrystalline glass shell 10 may be polished to obtain a smooth first end face 123. In another implementation, the first surface 111, the second surface 112, the third surface 121, and/or the fourth surface 122 of the microcrystalline glass enclosure 10 may be polished to adjust the haze of the microcrystalline glass enclosure 10 to meet different application requirements. In the present embodiment, the method further includes performing a strengthening process on the microcrystalline glass casing 10. Therefore, a strengthening layer can be formed on the surface of the microcrystalline glass shell 10, so as to further prevent the propagation of cracks on the shell assembly 100 and further improve the strength of the microcrystalline glass shell 10 and the shell assembly 100. In one embodiment, the microcrystalline glass case 10 is strengthened by a chemical strengthening method. Specifically, but not limited to, the microcrystalline glass housing 10 may be subjected to a salt bath, wherein the salt bath includes at least one of sodium salt and potassium salt, such as sodium nitrate and potassium nitrate, and the temperature of the salt bath is 400 ℃ to 500 ℃ and the time is 1h to 8 h.

In the present embodiment, the performance of the housing assembly 100 was tested using a ball drop impact test, in which the weight of the steel ball was 32 g. In one embodiment, after the flat non-microcrystalline glass is subjected to hot extrusion, a microcrystalline glass shell is obtained, and the shape of the microcrystalline glass shell is shown in fig. 1, wherein the microcrystalline glass shell is broken when a steel ball falls to the center point of the second surface of the microcrystalline glass shell at 140 cm; in a pair of proportions, the same tabular non-microcrystalline glass is processed by CNC to obtain the glass with the same shape and different thickness, and the glass with different thickness is crushed when the steel ball falls at the position of 110cm by adopting the same test conditions; in another comparative example, the same flat plate-like non-microcrystalline glass was subjected to CNC processing and hot bending treatment to obtain a different thickness glass of the same shape, and the steel ball was broken at 90cm under the same test conditions as described above.

The preparation method of the shell assembly 100 is simple, high in yield and low in cost, the shell assembly 100 with different thicknesses can be obtained through integrated forming, the strength and the stereoscopic impression of the shell assembly 100 are improved, and the application of the shell assembly 100 is facilitated.

The present application further provides an electronic device comprising the housing assembly 100 of any of the above embodiments. It is understood that the electronic device may be, but is not limited to, a cell phone, a tablet, a laptop, a watch, MP3, MP4, GPS navigator, digital camera, etc. The following description will be given taking a mobile phone as an example. Referring to fig. 11, a schematic structural diagram of an electronic device according to an embodiment of the present disclosure is shown, where the electronic device includes a display screen assembly 200 and a housing assembly 100. The electronic equipment with the shell assembly 100 has obvious stereoscopic impression in appearance, excellent mechanical performance, impact resistance, falling resistance and scratch resistance, is beneficial to prolonging the service life, and can meet the requirements of users. In the embodiment of the present application, when the extending portion 12 is bent toward the first surface 111, the second surface 112 and the fourth surface 122 serve as the outer surfaces of the housing assembly 100, and the first surface 111 and the third surface 121 serve as the inner surfaces of the housing assembly 100, so as to be used in combination with a display module, thereby enhancing the strength of the electronic device. Specifically, the display panel assembly 200 is connected to the housing assembly 100, and a receiving cavity is formed between the display panel assembly 200 and the housing assembly 100 for disposing the electronic components. Referring to fig. 12, which is an enlarged cross-sectional view taken along line a-a of fig. 11, the housing assembly 100 and the display panel assembly 200 are connected, and a receiving cavity is formed between the housing assembly 100 and the display panel assembly 200. The accommodating cavity is used for accommodating electronic components, and can be but not limited to a mainboard, a battery, a camera and the like.

The foregoing detailed description has provided for the embodiments of the present application, and the principles and embodiments of the present application have been presented herein for purposes of illustration and description only and to facilitate understanding of the methods and their core concepts; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. The shell assembly is characterized by comprising a microcrystalline glass shell, wherein the microcrystalline glass shell comprises a main body part and an extension part arranged at the edge of the main body part, the extension part is bent towards the main body part, the thickness of the extension part is uneven, and at least part of the thickness of the extension part is larger than that of the main body part.

2. The housing assembly of claim 1, wherein the extension portion has a thickness that gradually increases, or the extension portion has a thickness that increases and then decreases, or the extension portion has a thickness that increases and then does not change, along the extension direction of the extension portion.

3. The housing assembly of claim 1, wherein the minimum thickness of the extension is no less than the thickness of the body portion.

4. The housing assembly of claim 1, wherein the extension portion has a thickness of 0.55mm to 3mm and the body portion has a thickness of 0.5mm to 1 mm.

5. The housing assembly of claim 1, wherein a rate of change of thickness of the extension in a direction of extension of the extension is less than 30%.

6. The housing assembly of claim 1, wherein the main body portion includes first and second oppositely disposed surfaces, the extension portion includes third and fourth oppositely disposed surfaces, the first and third surfaces are connected, the second and fourth surfaces are connected, and the extension portion is bent in a direction adjacent to the first surface.

7. The housing assembly of claim 6, wherein the fourth surface is curved.

8. The housing assembly of claim 6, wherein the extension further comprises a first end surface connecting the third surface and the fourth surface, the first end surface being spaced from the first surface by a distance of 0.5mm to 8 mm.

9. The housing assembly of claim 6, wherein the second surface has a surface roughness of 0.3 μ ι η to 5 μ ι η.

10. The housing assembly of claim 1, wherein the crystallized glass housing has crystallized particles having a diameter of 30nm to 100 nm; the haze of the microcrystalline glass shell is 60% -95%.

11. The housing assembly of claim 1, wherein the main body portion and the extension portion are a unitary structure.

12. The housing assembly of claim 1, further comprising a decorative layer disposed on a surface of the microcrystalline glass housing.

13. A method of making a housing assembly, comprising:

14. The method according to claim 13, wherein the microcrystallization process comprises a nucleation process and a crystallization process; the temperature of the nucleation process is 500-900 ℃, and the heat preservation time is 5-60 min; the temperature of the crystallization process is 800-1200 ℃, and the heat preservation time is 5-75 min.

15. The method of manufacturing according to claim 13, wherein said hot-extruding the sheet glass comprises:

and carrying out hot extrusion on the plate glass by adopting a hot extrusion die, wherein the hot extrusion die is provided with an accommodating cavity, the accommodating cavity is used for accommodating the plate glass, and the surface roughness of the accommodating cavity is 0.3-5 mu m.

16. The electronic equipment is characterized by comprising a display screen assembly and a shell assembly, wherein the shell assembly comprises a microcrystalline glass shell, the microcrystalline glass shell comprises a main body part and an extension part arranged at the edge of the main body part, the extension part bends towards the main body part, the thickness of the extension part is uneven, and at least part of the thickness of the extension part is larger than that of the main body part.