Shell and electronic equipment

Abstract

The utility model relates to the technical field of electronic equipment, in particular to a shell and electronic equipment, the shell comprises a base material layer, a flame-retardant ink layer and an appearance decoration layer, the flame-retardant ink layer is arranged on the surface of one side of the base material layer, and the appearance decoration layer is arranged on the surface of the side, away from the base material layer, of the flame-retardant ink layer. According to the shell and the electronic equipment disclosed by the invention, the flame-retardant ink layer is arranged on the surface of the base material layer, and the flame-retardant ink layer can realize a relatively good flame-retardant effect and relatively high adhesive force, so that the shell has a relatively good flame-retardant effect, and meanwhile, the binding force of the appearance decoration layer and the flame-retardant ink layer is relatively high; and the problem that the appearance decoration layer falls off is effectively prevented.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a housing and an electronic device. Background Art

[0002] According to the UL 94 flammability standard, plastic flame retardancy is divided into four levels: HB, V-0, V-1, and V-2, with HB being the lowest flame retardancy and V-0 being the highest. In related art, a V-0 flame-retardant housing is often obtained by adding flame retardants to HB-grade raw materials, and then spraying exterior paint on the flame-retardant housing to achieve the decorative requirements of the electronic device. However, the surface adhesion of V-0 flame-retardant housings is poor, resulting in a weak bond between the flame-retardant housing and the exterior paint, making it prone to paint peeling. Utility Model Content

[0003] The present application provides a housing and an electronic device, which can achieve good flame retardant effect of the housing and also make the bonding force between the appearance decoration layer and the flame retardant ink layer stronger, thereby effectively preventing the problem of the appearance decoration layer falling off.

[0004] To achieve the above objectives, in a first aspect, the present application provides a housing, comprising:

[0005] substrate layer;

[0006] a flame retardant ink layer, the flame retardant ink layer being disposed on one side surface of the substrate layer; and

[0007] The appearance decoration layer is provided on a surface of the flame retardant ink layer away from the substrate layer.

[0008] In some possible implementations, the substrate layer is made of hard plastic.

[0009] In some possible implementations, the flame retardant ink layer is made of a halogen-free flame retardant coating.

[0010] In some possible implementations, the thickness of the flame retardant ink layer is 8 um to 12 um.

[0011] In some possible implementations, the appearance decoration layer is coated on the flame retardant ink layer, and the appearance decoration layer is a coating that does not contain organic tin.

[0012] In some possible implementations, the thickness of the exterior decoration layer is 80 um to 120 um.

[0013] In some possible implementations, the housing further includes an antenna ink layer, and the antenna ink layer is disposed between the flame-retardant ink layer and the exterior decoration layer.

[0014] In some possible implementations, the antenna ink layer has a thickness of 10 um to 14 um.

[0015] In some possible implementations, the antenna ink layer partially covers the flame-retardant ink layer.

[0016] In a second aspect, the present application further provides an electronic device, comprising the housing as described in the first aspect above.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] The present application provides a housing and electronic device, comprising a substrate layer, a flame-retardant ink layer, and a decorative layer. The flame-retardant ink layer is disposed on one surface of the substrate layer, and the decorative layer is disposed on a surface of the flame-retardant ink layer away from the substrate layer. The housing and electronic device provided herein, by disposing the flame-retardant ink layer on the surface of the substrate layer, achieve a good flame-retardant effect, have strong adhesion, and are highly compatible with the decorative layer. This not only provides the housing with a good flame-retardant effect, but also strengthens the bonding between the decorative layer and the flame-retardant ink layer, effectively preventing the decorative layer from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0021] Figure 2 A schematic structural diagram of a housing provided in an embodiment of the present application;

[0022] Figure 3 for Figure 2 A cross-sectional view of the shell along the aa direction;

[0023] Figure 4 for Figure 2 Another cross-sectional view of the shell along the aa direction.

[0024] Description of reference numerals:

[0025] 100-shell; 1-base material layer; 2-fire-resistant ink layer; 3-appearance decoration layer; 4-antenna ink layer;

[0026] 200-Electronic equipment. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0028] In this application, the terms "upper" and "inner" and other terms indicating positions or locations are based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0029] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0030] Furthermore, the terms "disposed" and "equipped with" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0031] Within the framework of the internationally recognized UL 94 flammability standard, the flame retardancy of plastic materials is meticulously classified into four key grades: HB, V-0, V-1, and V-2. This series of grades not only reflects the differences in a material's ability to resist ignition and sustained combustion, but also directly relates to the safety performance of electronic devices and their accessories. Specifically, the HB grade, as the basic threshold in this series, indicates that the material has only limited flame retardancy, while the V-0 grade represents the highest level of flame retardancy, meaning that the material can quickly self-extinguish under rigorous testing conditions, significantly reducing the risk of fire.

[0032] Nowadays, consumers are increasingly concerned about the safety of electronic devices. During the production process of the shell, flame retardants are usually added to HB-grade plastic raw materials to improve the flame retardancy of the plastic raw materials. However, while pursuing high flame retardancy, flame retardant shells with flame retardants also face the problem of changes in surface properties, which directly affects the bonding strength between the flame retardant shell and subsequent appearance decoration treatments (such as spray painting). Specifically, when spraying paint coating on the surface of the flame retardant shell with added flame retardants, if the adhesion problem is not effectively solved, it may cause appearance defects such as paint peeling and flaking, which not only affects the aesthetics of the product, but also poses a potential threat to the overall durability and safety performance of the product.

[0033] In view of this, the present application provides a shell and an electronic device, which can achieve a good flame retardant effect of the shell, and can also make the bonding force between the appearance decorative layer and the flame retardant ink layer stronger, thereby reducing the occurrence of the problem of shell paint falling off.

[0034] The technical solution of the present application will be further described below with reference to the embodiments and drawings.

[0035] See also Figure 1 , Figure 1 Schematic diagram of the structure of the electronic device 200 provided in the embodiment of the present application. An electronic device 200 provided in the embodiment of the present application may include, for example, a housing 100 and a display screen (not shown). The housing 100 may include, for example, a middle frame and a back cover. The middle frame and the back cover are enclosed and connected, and the display screen is connected to the middle frame and the back cover. Thus, the display screen, the middle frame and the back cover together define an internal space of the electronic device 200. The internal space can be used to install functional components of the electronic device 200, such as a battery, a motherboard, a microphone, a camera module, a mobile communication module, an audio module, a processor, a universal serial bus (USB) interface, a charging management module, a power management module, a charging interface, a sensor module, and a subscriber identification module (SIM) card interface and other functional components. It is understandable that the above-mentioned functional components can be fixed on the housing 100 by welding, gluing, etc., and the embodiment of the present application does not specifically limit this.

[0036] The electronic device 200 in the present application can be used as a smart watch, for example, and its overall shape is usually rectangular, that is, the overall shape of the shell 100 of the device body is usually rectangular. Of course, as other examples, the electronic device 200 can also be other shapes such as circular, triangular, etc., and the embodiments of the present application do not specifically limit this.

[0037] Specifically, the electronic device 200 may also be other electronic devices such as a smart phone, a laptop computer, a tablet computer, a PDA, a gaming device, etc., which is not specifically limited in the embodiments of the present application.

[0038] Considering that the electronic device 200 usually includes a battery, as the use time increases, the battery performance will decline, and the risk of battery short circuit will increase. In addition, the electronic device 200 may be in contact with human skin for a long time. The sweat, sebum and body temperature secreted by the human body will cause the possibility of battery short circuit. These problems may cause spontaneous combustion inside the electronic device 200, thereby endangering the personal safety of the user. In addition, in order to improve the flame retardant performance of the shell 100 of the electronic device 200, the shell 100 added with flame retardant will change the surface properties of the shell 100 material to a certain extent. This change will directly affect the subsequent appearance decoration process, especially the spray painting process, so that the bonding strength between the shell 100 and the paint is weakened, and the paint coating will peel off and crack during use, thereby affecting the aesthetics and durability of the electronic device 200. Based on this, the present application designs the shell 100 of the electronic device 200, selects the raw materials of the shell 100, and adds a flame-retardant ink layer 2 and an appearance decorative layer 3, so that the shell 100 has a better flame-retardant effect, and the bonding force between the appearance decorative layer 3 and the flame-retardant ink layer 2 is stronger, thereby reducing the occurrence of the problem of paint falling off of the shell 100.

[0039] It is understood that when the housing 100 includes a middle frame and a back cover, the rear cover material is primarily modified, with the addition of the flame-retardant ink layer 2 and the exterior decorative layer 3. In other words, flame retardancy, and particularly the shedding issue, is primarily focused on the rear cover of the housing 100.

[0040] To facilitate understanding of the specific structure of the housing 100 , the specific structure of the housing 100 will be described in detail below with reference to the accompanying drawings.

[0041] Please also refer to Figure 2 and Figure 3 , Figure 2 This is a schematic structural diagram of the housing 100 provided in an embodiment of the present application. Figure 3 for Figure 2A cross-sectional view of the housing 100 along the aa direction is shown in FIG. The present embodiment provides a housing 100 comprising a substrate layer 1, a flame retardant ink layer 2, and an exterior decorative layer 3. The flame retardant ink layer 2 is disposed on one side of the substrate layer 1, and the exterior decorative layer 3 is disposed on the side of the flame retardant ink layer 2 facing away from the substrate layer 1. Since the flame retardant ink layer 2 can effectively improve the flame retardancy rating of the housing 100 and the flame retardant ink layer 2 has strong adhesion, the exterior decorative layer 3 is disposed on one side of the flame retardant ink layer 2, resulting in a strong bond between the exterior decorative layer 3 and the flame retardant ink layer 2. Thus, the housing 100 can achieve a high flame retardancy rating while also ensuring a strong bond between the exterior decorative layer 3 and the flame retardant ink layer 2, thereby effectively reducing the risk of peeling or flaking of the exterior decorative layer 3.

[0042] In some embodiments, the material of the substrate layer 1 is a hard plastic material. Since the shell 100 is applied to the electronic device 200, the shell 100 made of hard plastic material can support the internal structural parts of the electronic device 200. Moreover, the hard plastic material has good elasticity and toughness and can bend without breaking or deforming, thereby effectively reducing the risk of damage to the electronic device 200 due to impact or falling.

[0043] For example, the hard plastic material can be polycarbonate resin (PC), polyamide resin (PA), polyethylene terephthalate (PET), polyvinyl chloride resin (PVC), polypropylene resin (PP) or a composite material thereof, etc. It is understandable that, taking PA as an example, PA has the characteristics of high strength, high rigidity, high wear resistance and high temperature resistance, and can provide the housing 100 of the electronic device 200 with strong mechanical properties and flame retardant properties, thereby effectively extending the service life of the electronic device 200. However, the flame retardant grade of the substrate layer 1 is HB flame retardant grade. At this time, the flame retardant grade of the substrate layer 1 is not high enough and cannot reach the V-0 flame retardant grade currently required for electronic products. It is necessary to provide a flame retardant ink layer 2 on the substrate layer 1. Only then can the housing 100 provided in the embodiment of the present application reach the V-0 flame retardant grade.

[0044] For example, there are many ways to set the flame-retardant ink layer 2 and the appearance decoration layer 3 on the substrate layer 1 of hard plastic material, such as spraying, silk screen printing, gravure printing, pad printing, hot stamping, transfer printing, etc. The specific settings can be made according to actual needs, and the embodiments of this application do not make specific limitations on this.

[0045] For example, after forming the flame retardant ink layer 2 and the exterior decorative layer 3 on the substrate layer 1, the housing 100 is machined and formed, and then the formed housing 100 undergoes CNC contour processing, and the housing 100 is assembled with auxiliary foam, and finally, the entire device is assembled by gluing. Alternatively, the substrate layer 1 can be machined and formed, and then the flame retardant ink layer 2 and the exterior decorative layer 3 are formed on the formed substrate layer 1, and then CNC contour processing, auxiliary foam assembly, and finally, the entire device is assembled by gluing. The specific configuration can be adjusted according to actual needs and is not specifically limited in this embodiment of the application.

[0046] It is understandable that the flame retardant ink layer 2 can be provided on one side surface of the substrate layer 1, or on two opposite sides of the substrate layer 1. The specific setting can be based on actual needs and is not specifically limited in the embodiments of the present application.

[0047] For example, as can be seen from the above, the flame-retardant ink layer 2 can be provided on the back cover. Then, the back cover includes a side surface close to the display screen of the electronic device 200 (referred to as the inner surface) and another side surface facing away from the display screen (referred to as the outer surface). Generally speaking, the flame-retardant ink layer 2 and the appearance decorative layer 3 can be provided only on the outer surface. Of course, as other examples, the flame-retardant ink layer 2 and the appearance decorative layer 3 can be provided not only on the outer surface, but also on the inner surface.

[0048] In some embodiments, the flame-retardant ink layer 2 can be made of a halogen-free flame retardant coating. Since electronic devices 200 often come into direct or close contact with users for extended periods, and halogen-free flame retardant coatings do not produce toxic or corrosive gases when burned, using a halogen-free flame retardant coating for the flame-retardant ink layer 2 can effectively reduce the environmental and human health impacts of combustion on the housing 100. Furthermore, the inherent flame retardancy and strong adhesion of halogen-free flame retardant coatings can effectively improve the flame retardancy requirements of the housing 100 and its bonding with the exterior decorative layer 3. Therefore, forming the flame-retardant ink layer 2 on the substrate layer 1 can elevate the housing 100's flame retardancy from HB to V-0. It can also improve the bonding between the flame-retardant ink layer 2 and the exterior decorative layer 3, effectively reducing the risk of peeling or flaking of the exterior decorative layer 3.

[0049] In some embodiments, the thickness of the flame retardant ink layer 2 is 8 μm to 12 μm, and exemplary thicknesses include, but are not limited to, 8 μm, 8.5 μm, 9 μm, 9.5 μm, 10 μm, 10.5 μm, 11 μm, 11.5 μm, and 12 μm. If the thickness of the flame retardant ink layer 2 is too thin, the flame retardant effect of the housing 100 may be poor. If the thickness of the flame retardant ink layer 2 is too thick, the flame retardant effect of the housing 100 may not be significantly improved, and the overall thickness of the housing 100 may be increased, making the electronic device 200 bulky.

[0050] Please refer again Figure 3 In some embodiments, the appearance decorative layer 3 is coated on the flame-retardant ink layer 2. The appearance decorative layer 3 can be a coating that does not contain organic tin. The coating that does not contain organic tin has a fast curing speed, high production efficiency, economy and environmental protection, and is suitable for preparing the shell 100 of the electronic device 200 that needs to contact human skin.

[0051] In some embodiments, the thickness of the exterior decoration layer 3 is 80 μm to 120 μm, and may include, but is not limited to, 80 μm, 85 μm, 90 μm, 95 μm, 100 μm, 105 μm, 110 μm, 115 μm, 120 μm, etc. If the thickness of the exterior decoration layer 3 is too thin, the decorativeness and aesthetics of the exterior decoration layer 3 will be reduced. If the thickness of the exterior decoration layer 3 is too thick, the overall thickness of the housing 100 will increase, thereby increasing the overall weight of the electronic device 200.

[0052] See also Figure 4 , Figure 4 for Figure 2 Another cross-sectional view of the housing 100 along the aa direction is shown. In some embodiments, the housing 100 further includes an antenna ink layer 4, which is disposed between the flame-retardant ink layer 2 and the exterior decorative layer 3. The antenna ink layer 4 has good bonding strength with both the flame-retardant ink layer 2 and the exterior decorative layer 3. This enables the housing 100 to simultaneously possess good flame retardancy and antenna performance. Furthermore, the exterior decorative layer 3, applied on the antenna ink layer 4, is not easily detached, effectively extending the service life of the electronic device 200.

[0053] It is understood that the housing 100 of the electronic device 200 may include the antenna ink layer 4.

[0054] Alternatively, the antenna ink layer 4 may not be included, and this embodiment of the present application does not limit this.

[0055] Optionally, the thickness of the antenna ink layer 4 is 10um to 14um, and examples can include but are not limited to 10um, 10.5um, 11um, 11.5um, 12um, 12.5um, 13um, 13.5um, 14um, etc. When the thickness of the antenna ink layer 4 is too small, the antenna performance of the electronic device 200 will be reduced, and when the thickness of the antenna ink layer 4 is too large, the overall thickness of the shell 100 will be increased, and the overall weight of the electronic device 200 will be increased.

[0056] Optionally, the antenna ink layer 4 can partially cover the flame-retardant ink layer 2, that is, the antenna ink layer 4 is coated at a specific position of the shell 100 to achieve the required antenna performance of the electronic device 200. The coverage area of the antenna ink layer 4 on the shell 100 can be determined according to the shape, size, working frequency and other parameters of the antenna, thereby effectively reducing the manufacturing cost. At the same time, in order to reduce the mutual coupling effect of the antenna and improve the isolation degree and signal-to-noise ratio of the antenna, the partial coverage of the antenna ink layer 4 on the flame-retardant ink layer 2 can effectively improve the antenna performance.

[0057] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A housing, characterized in that: include: substrate layer; A flame retardant ink layer, the flame retardant ink layer being provided on one side surface of the substrate layer; as well as An appearance decorative layer, the appearance decorative layer being provided on a surface of the flame retardant ink layer away from the substrate layer; The housing further includes an antenna ink layer, which is disposed between the flame retardant ink layer and the appearance decoration layer.

2. The housing according to claim 1, wherein: The material of the substrate layer is hard plastic.

3. The housing according to claim 1, wherein: The material of the flame retardant ink layer is halogen-free flame retardant coating.

4. The housing according to claim 1, wherein: The thickness of the flame retardant ink layer is 8um to 12um.

5. The housing according to claim 1, wherein: The appearance decoration layer is coated on the flame retardant ink layer, and the appearance decoration layer is a coating that does not contain organic tin.

6. The housing according to claim 1, wherein: The thickness of the exterior decoration layer is 80um to 120um.

7. The housing according to any one of claims 1 to 6, characterized in that: The thickness of the antenna ink layer is 10um to 14um.

8. The housing according to claim 7, wherein: The antenna ink layer partially covers the flame retardant ink layer.

9. An electronic device, characterized in that: The invention comprises a housing as described in any one of claims 1 to 8.

Images