Housing components and electronic equipment

Abstract

The present application discloses a shell assembly and an electronic device, which belongs to the field of electronic device sealing technology. The shell assembly includes: the shell assembly includes: a shaft cover, the shaft cover is arranged on the side of the hinge device away from the flexible screen, and extends along the length direction of the hinge device; a cover plate, the cover plate is arranged on the side of the second body opposite to the flexible screen, and movably covers the outside of the shaft cover, so that the cover plate slides relative to the shaft cover during the swing of the first body relative to the second body; a blocking part, the blocking part includes a first blocking layer group, the first blocking layer group is installed between the shaft cover and the cover plate, and extends from one end of the shaft cover in the length direction to the other end of the shaft cover, for blocking the gap between the cover plate and the shaft cover. Avoid interference or damage to the movement of the hinge device, and improve the sealing and waterproof properties of the folding screen mobile phone.

Description

Technical Field

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

[0002] A foldable screen phone is a smartphone that combines a flexible screen with a hinge device, which can achieve a large screen display while ensuring portability. The emergence of foldable screen phones not only meets the needs of users for mobile office, gaming and entertainment, but also demonstrates the innovation and cutting-edge nature of smartphones.

[0003] At present, there are three main folding methods for foldable screen mobile phones: horizontal inward folding, horizontal outward folding and vertical inward folding. Horizontal inward folding means that the flexible screen is stored inside the fuselage when folded, and a large display area is presented when unfolded; horizontal outward folding means that the flexible screen is wrapped around the outside of the fuselage when folded, and a large display area is presented when unfolded; vertical inward folding means that the flexible screen is folded inward along the vertical direction, and a long strip display area is presented when unfolded. The hinge device in the foldable screen mobile phone is a complex mechanical structure that needs to meet multiple functions and requirements, such as: supporting the tension of the flexible screen, realizing rotation at multiple angles and directions, ensuring smoothness and stability during rotation, adapting to different temperature and humidity environments, and preventing the intrusion and accumulation of foreign matter. In order to achieve these functions and requirements, the hinge device usually includes multiple components such as a base, a swing arm, a spring, and a buffer pad, and these components need to be precisely matched and coordinated to ensure the normal operation of the hinge device.

[0004] However, while foldable screen phones provide an excellent user experience, they also face some technical challenges. One of them is how to protect the hinge device in foldable screen phones. The hinge device is one of the core components of foldable screen phones. It is responsible for connecting the two bodies and realizing the folding and unfolding of the screen. The movement state and reliability of the hinge device directly affect the service life and safety of foldable screen phones.

[0005] Since the hinge device is usually located on the outside of a foldable screen mobile phone, it is easily exposed to the external environment and thus corroded and damaged by factors such as dust, moisture, friction, etc. These factors will not only affect the smoothness and stability of the hinge device, but may even cause dangerous situations such as short circuit or overheating between the hinge device and the battery components. Summary of the invention

[0006] The present application provides a housing assembly and an electronic device, wherein the housing assembly is used to prevent a hinge device of the electronic device from being exposed to dust and other impurities, thereby ensuring the smooth operation and service life of the hinge device.

[0007] To achieve the above purpose, the embodiment of the present application adopts the following technical solution:

[0008] In a first aspect, a shell assembly is provided, which is applied to an electronic device, wherein the electronic device includes a first body, a second body, a flexible screen, and a hinge device arranged between the first body and the second body, and the flexible screen is installed on the first body and the second body, and the shell assembly includes: a shaft cover, which is arranged on a side of the hinge device away from the flexible screen and extends along the length direction of the hinge device; a cover plate, which is arranged on a side of the second body opposite to the flexible screen and movably covers the outer side of the shaft cover so that the cover plate slides relative to the shaft cover during the swinging of the first body relative to the second body; a blocking part, which includes a first blocking layer group, which is installed between the shaft cover and the cover plate, and extends from one end of the shaft cover in the length direction to the other end of the shaft cover, for blocking the gap between the cover plate and the shaft cover.

[0009] The shell assembly provided in the embodiment of the present application, by providing a sealing portion and a first sealing layer group, reduces the gap between the hinge device and the battery component, thereby effectively preventing impurities such as dust and moisture from entering the interior of the hinge device in the folding screen mobile phone, avoiding interference or damage to the movement of the hinge device, and improving the sealing and waterproof properties of the folding screen mobile phone.

[0010] In one embodiment, the first blocking layer group is disposed on the cover plate, and one end of the first blocking layer group close to the shaft cover has a first friction-reducing surface. Since the first friction-reducing surface of the first blocking layer group can reduce the friction and noise between the first blocking layer group and the shaft cover, the user can fold or unfold the cover plate more smoothly and quietly without causing excessive wear and tear on the cover plate and the shaft cover.

[0011] In one embodiment, the first blocking layer group includes a first adhesive layer and a first anti-friction layer, the first adhesive layer is arranged between the first anti-friction layer and the cover plate to glue the first anti-friction layer to the cover plate, and the first anti-friction surface is arranged on the first anti-friction layer. The first adhesive layer can firmly glue the first anti-friction layer to the cover plate, and the user can ensure that the first blocking layer group will not be displaced or fall off due to the relative sliding between the cover plate and the shaft cover, thereby affecting the sealing and waterproof properties of the folding screen mobile phone; at the same time, since the first anti-friction layer has high flexibility and elasticity, the user can ensure that the first anti-friction layer will not be broken or deformed due to the relative sliding between the cover plate and the shaft cover, thereby affecting the service life and safety of the folding screen mobile phone.

[0012] In one embodiment, the first anti-friction layer includes a polytetrafluoroethylene layer or a mylar layer.

[0013] In one embodiment, the blocking portion further includes a second blocking layer group, which is mounted on the shaft cover, the position of the second blocking layer group corresponds to the position of the first blocking layer group, and the end of the second blocking layer group close to the cover plate has a second anti-friction surface. This can effectively increase the airtightness and waterproofness of the blocking portion, and prevent dust, moisture and other impurities from entering the hinge device in the folding screen mobile phone, affecting the smoothness and stability of the hinge device.

[0014] In one embodiment, the second sealing layer group includes a second adhesive layer and a second anti-friction layer, the second adhesive layer is arranged between the second anti-friction layer and the cover plate to glue the second anti-friction layer to the shaft cover, and the second anti-friction surface is arranged on the second anti-friction layer.

[0015] In one embodiment, the second anti-friction layer includes a polytetrafluoroethylene layer or a mylar layer.

[0016] In one embodiment, a plurality of first convex strip structures are arranged on the first friction-reducing layer, the length extension direction of the first convex strip structures is perpendicular to the length direction of the first friction-reducing layer, and the plurality of first convex strip structures are arranged at intervals along the length direction of the first friction-reducing layer, which can effectively reduce the friction coefficient between the first friction-reducing layer and the shaft cover, thereby reducing the friction force and noise of the first friction-reducing layer on the shaft cover.

[0017] In one embodiment, a plurality of second convex strip structures are arranged on the second friction-reducing layer, the length extension direction of the second convex strip structures is perpendicular to the length direction of the second friction-reducing layer, and the plurality of second convex strip structures are arranged at intervals along the length direction of the second friction-reducing layer; the first friction-reducing layer and the second friction-reducing layer are meshed with each other through the plurality of the first convex strip structures and the plurality of the second convex strip structures. Since the plurality of the first convex strip structures and the plurality of the second convex strip structures can mesh with each other, the user can ensure that there is sufficient tightness between the first blocking layer group and the second blocking layer group to prevent dust, moisture and other impurities from entering the hinge device of the folding screen mobile phone, thereby improving the sealing and waterproof properties of the folding screen mobile phone;

[0018] In one embodiment, a side of the cover plate close to the shaft cover is provided with an accommodating recess, and the first sealing layer group is arranged in the accommodating recess.

[0019] In one embodiment, the electronic device has a folded state in which the cover is shielded by the second body, and when the electronic device is in the folded state, the flexible screen is located on the outside of the electronic device.

[0020] In one embodiment, the hinge device includes a base, a first swing arm and a second swing arm, the first swing arm is rotatably connected to the base, and the second swing arm is rotatably connected to the base; wherein the first body is mounted on the first swing arm, the second body is mounted on the second swing arm, the cover plate is connected to the first body, and the shaft cover is rotatably connected to the base.

[0021] A second aspect of the present application provides an electronic device, which includes a first body, a second body, a flexible screen, and a hinge device arranged between the first body and the second body, wherein both ends of the flexible screen are respectively mounted on the first body and the second body, and the shell assembly is the above-mentioned shell assembly.

[0022] Through the above technical solution, since the electronic device includes the above shell assembly, it at least has all the beneficial effects of the shell assembly, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0024] Figure 2 A schematic diagram of the structure of a hinge device provided in an embodiment of the present application;

[0025] Figure 3 A partial schematic diagram of an electronic device in an unfolded state provided by an embodiment of the present application;

[0026] Figure 4 for Figure 3 A partial enlarged view of the middle A area;

[0027] Figure 5 A schematic diagram of the structure of a cover plate provided with a first blocking layer group according to an embodiment of the present application;

[0028] Figure 6 for Figure 5 A partial enlarged view of the middle E area;

[0029] Figure 7 A schematic diagram of the structure of a housing assembly provided in an embodiment of the present application;

[0030] Figure 8 A schematic structural diagram of a housing assembly provided in another embodiment of the present application;

[0031] Fig. 9 A partial cross-sectional schematic diagram of an electronic device in an unfolded state provided by an embodiment of the present application;

[0032] Fig.10 for Fig. 9 A partial enlarged view of the middle B area;

[0033] Fig.11 A partial schematic diagram of an electronic device in a folded state provided by an embodiment of the present application;

[0034] Fig.12 for Fig.11 A partial enlarged view of the middle C area;

[0035] Fig.13 A partial cross-sectional schematic diagram of an electronic device in a folded state provided by an embodiment of the present application;

[0036] Fig.14 for Fig.13 A partial enlarged view of the D area in the middle;

[0037] The meanings of the figures are as follows:

[0038] 10. Shaft cover;

[0039] 20. Cover plate;

[0040] 30. sealing part; 31. first sealing layer group; 311. first adhesive layer; 312. first anti-friction layer; 3121. first anti-friction surface; 3122. first convex strip structure; 32. second sealing layer group; 321. second adhesive layer; 322. second anti-friction layer; 3221. second anti-friction surface; 3222. second convex strip structure;

[0041] 40. Decorative shell;

[0042] 50. First fuselage;

[0043] 60. Second fuselage;

[0044] 70. hinge device; 71. base; 72. first swing arm; 73. second swing arm;

[0045] 80. Flexible screen. DETAILED DESCRIPTION

[0046] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0047] It should be understood that in the description of the present application, it should be understood that the terms "length", "width", "thickness", "top", "bottom", "inside", "outside", "up", "down", "left", "right", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0048] The terms "first", "second", "third", "fourth", etc. are only used to distinguish descriptions and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. For example, the first push part and the second push part are only used to distinguish different push parts, and their order is not limited. The first push part can also be named as the second push part, and the second push part can also be named as the first push part without departing from the scope of the various described embodiments. And the terms "first", "second", "third", "fourth", etc. do not limit the indicated features to be different.

[0049] In the embodiments of the present application, unless otherwise clearly specified and limited, the terms "connected", "connection" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically limited.

[0050] In the embodiments of the present application, "and / or" is only a description of the association relationship of the associated objects, indicating that three relationships can exist; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0051] It should be noted that, in the embodiments of the present application, words such as "in one embodiment", "exemplarily", "for example", etc. are used to indicate examples, illustrations or descriptions. Any embodiment or design described in the embodiments of the present application as "in one embodiment", "exemplarily", "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "in one embodiment", "exemplarily", "for example", etc. is intended to present related concepts in a specific way.

[0052] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0053] While the folding screen mobile phones in the related technology bring excellent user experience, they also face some technical difficulties. One of them is how to protect the hinge device in the folding screen mobile phone. The hinge device is one of the core components of the folding screen mobile phone. It is responsible for connecting the two bodies and realizing the folding and unfolding of the screen. The movement state and reliability of the hinge device directly affect the service life and safety of the folding screen mobile phone. Since the hinge device is usually located on the outside of the folding screen mobile phone, it is easily exposed to the external environment, and thus suffers from erosion and damage by factors such as dust, moisture, and friction. These factors will not only affect the smoothness and stability of the hinge device's movement, but may even cause dangerous situations such as short circuits or overheating between the hinge device and the battery components.

[0054] An embodiment of the present application provides a shell assembly, which is applied to an electronic device, wherein the electronic device includes a first body 50, a second body 60, a flexible screen 80, and a hinge device 70 arranged between the first body 50 and the second body 60, and both ends of the flexible screen 80 are respectively installed on the first body 50 and the second body 60. The shell assembly has a sealing portion, which can improve the above-mentioned technical problems.

[0055] Specifically, please refer to Figures 1 to 4 As shown, the shell assembly of the embodiment of the present application includes: a shaft cover 10, a cover plate 20 and a sealing portion 30, the shaft cover 10 is arranged on the side of the hinge device 70 away from the flexible screen 80, and extends along the length direction of the hinge device 70; the cover plate 20 is arranged on the side of the second body 60 opposite to the flexible screen 80, and is movably covered on the outside of the shaft cover 10, so that the cover plate 20 slides relative to the shaft cover 10 during the swinging of the first body 50 relative to the second body 60, wherein the outside of the above-mentioned shaft cover refers to the side of the shaft cover away from the hinge device; the sealing portion 30 includes a first sealing layer group 31, the first sealing layer group 31 is installed between the shaft cover 10 and the cover plate 20, and extends from one end of the shaft cover 10 in the length direction to the other end of the shaft cover 10, for sealing the gap between the cover plate 20 and the shaft cover 10.

[0056] It should be noted that the first body 50 and the second body 60 are relatively swung by the hinge device 70. During the relative swing, the cover plate 20 swings along with the second body 60. In order for the shaft cover 10 to adapt to the movement trajectory of the cover plate 20, in one embodiment, the shaft cover 10 is rotatably arranged on the hinge device 70 so that it can rotate along with the cover plate 20 during the swing of the second body 60. In other embodiments, the shaft cover 10 can also be made of elastic material to adapt to the rotation of the cover plate 20. The cover plate 20 in the embodiment of the present application is a cover plate.

[0057] Among them, the above-mentioned electronic device can be a foldable screen mobile phone, a foldable tablet computer, a foldable watch, etc., and in this application, it especially refers to a foldable screen mobile phone.

[0058] The embodiment of the present application provides a sealing portion 30 and a first sealing layer group 31 to reduce the gap between the hinge device 70 and the battery component, thereby effectively preventing impurities such as dust and moisture from entering the hinge device 70 in the folding screen mobile phone, avoiding interference or damage to the movement of the hinge device 70, and improving the sealing and waterproof properties of the folding screen mobile phone.

[0059] It should be noted that by making the cover plate movably cover the outside of the shaft cover 10, the folding angle and unfolding angle range of the folding screen mobile phone can be increased; for example, when the user needs to change the folding screen mobile phone from the unfolded state to the folded state or vice versa, the user can easily slide the cover plate along the shaft cover 10, so that the folding screen mobile phone can be folded or unfolded at different angles, thereby meeting the user's needs for folding screen mobile phones in different application scenarios; in addition, by making the cover plate movably cover the outside of the shaft cover 10 and slide relative to the shaft cover 10, the cover plate can also be adaptively adjusted, so that the cover plate can fit tightly with the shaft cover 10 in different folding or unfolding states. The cover plate described in the embodiments of the present application refers in particular to the battery cover.

[0060] Among them, the shaft cover 10 mainly plays the role of protecting the hinge device 70 in the folding screen mobile phone from the influence of the external environment, thereby improving the durability and reliability of the folding screen mobile phone; at the same time, the cover plate 20 can easily replace or repair the battery components in the folding screen mobile phone; for example, when the battery of the folding screen mobile phone is damaged or low on power, the user can replace or repair the battery components by opening the cover plate without disassembling the entire folding screen mobile phone; in addition, by setting the shaft cover 10 and the cover plate, the structural strength and rigidity of the folding screen mobile phone can also be increased, thereby extending the service life of the flexible screen.

[0061] The function of the first blocking layer group 31 of the embodiment of the present application is to block the gap between the cover plate 20 and the shaft cover 10 to prevent dust, moisture and other impurities from entering the hinge device 70 in the folding screen mobile phone, affecting the smoothness and stability of the movement of the hinge device 70. Specifically, the first blocking layer group 31 is installed between the shaft cover 10 and the cover plate 20, and extends from one end of the shaft cover 10 in the length direction to the other end of the shaft cover 10, forming an enclosed space to isolate the hinge device 70 from the external environment. The first blocking layer group 31 can be made of anti-friction material to reduce the friction of the relative sliding between the cover plate 20 and the shaft cover 10.

[0062] While ensuring the sealing effect of the sealing portion 30, the relative sliding friction between the cover plate 20 and the shaft cover 10 must also be considered. The first sealing layer group 31 in the embodiment of the present application is arranged on the cover plate 20, and the end of the first sealing layer group 31 close to the shaft cover 10 has a first friction reducing surface 3121. By setting the first blocking layer group 31 on the cover plate 20 and making the end of the first blocking layer group 31 close to the shaft cover 10 have a first friction-reducing surface 3121, the friction coefficient between the cover plate 20 and the shaft cover 10 can be effectively reduced, the friction and noise can be reduced, and the comfort of using the folding screen mobile phone can be improved; at the same time, the service life of the cover plate 20 and the shaft cover 10 can be extended, and the wear or damage of the cover plate 20 and the shaft cover 10 caused by long-term friction can be avoided; for example, when the user needs to change the folding screen mobile phone from an unfolded state to a folded state or vice versa, since the first friction-reducing surface 3121 of the first blocking layer group 31 can reduce the friction and noise between the shaft cover 10, the user can perform the folding or unfolding operation more smoothly and quietly, and at the same time will not cause excessive damage to the cover plate 20 and the shaft cover 10.

[0063] In addition, by providing the first sealing layer group 31 on the cover plate 20 and making the end of the first sealing layer group 31 close to the shaft cover 10 have a first friction-reducing surface 3121, the first sealing layer group 31 can be designed to fully contact the shaft cover 10, thereby increasing the sealing and waterproof properties of the folding screen mobile phone and preventing impurities such as dust and moisture from entering the interior of the hinge device 70 in the folding screen mobile phone without worrying about excessive friction coefficient.

[0064] The function of the first friction-reducing surface 3121 of the embodiment of the present application is to reduce the friction coefficient between the cover plate 20 and the shaft cover 10, reduce friction and noise, and improve the comfort of using the folding screen mobile phone. The first friction-reducing surface 3121 can be made of a material with a lower friction coefficient, such as polytetrafluoroethylene or mylar, or other materials with a lower friction coefficient. The first friction-reducing surface 3121 is arranged at one end of the first blocking layer group 31 close to the shaft cover 10, so that the cover plate 20 can slide smoothly when relative to the shaft cover 10, and no harsh sound will be generated.

[0065] Please refer to Figures 5 to 7As shown, in order to install the first sealing layer, the first sealing layer group 31 in the embodiment of the present application includes a first adhesive layer 311 and a first anti-friction layer 312, the first adhesive layer 311 is arranged between the first anti-friction layer 312 and the cover plate 20 to glue the first anti-friction layer 312 to the cover plate 20, and the first anti-friction surface 3121 is arranged on the first anti-friction layer 312. By setting the first adhesive layer 311 and the first friction-reducing layer 312, the position of the first blocking layer group 31 on the cover plate 20 can be effectively fixed and supported, the first blocking layer group 31 can be prevented from moving or falling off, and the structural stability and reliability of the folding screen mobile phone can be improved; at the same time, the flexibility and elasticity of the first blocking layer group 31 can also be enhanced, so that the first blocking layer group 31 can adapt to the relative sliding between the cover plate 20 and the shaft cover 10 without breaking or deforming; for example, when the user changes the folding screen mobile phone from an unfolded state to a folded state or vice versa, since the first adhesive layer 311 can firmly glue the first friction-reducing layer 312 to the cover plate 20, the user can ensure that the first blocking layer group 31 will not be displaced or fall off due to the relative sliding between the cover plate 20 and the shaft cover 10, thereby affecting the sealing and waterproofness of the folding screen mobile phone; at the same time, since the first friction-reducing layer 312 has high flexibility and elasticity, the user can ensure that the first friction-reducing layer 312 will not be broken or deformed due to the relative sliding between the cover plate 20 and the shaft cover 10, thereby affecting the service life and safety of the folding screen mobile phone.

[0066] By setting the first adhesive layer 311, the pressure and impact force between the cover plate 20 and the shaft cover 10 can be effectively dispersed and buffered, preventing excessive stress or damage between the cover plate 20 and the shaft cover 10, thereby improving the pressure resistance and impact resistance of the folding screen mobile phone.

[0067] At the same time, the first adhesive layer 311 can be made of heat-insulating adhesive material to reduce the thermal conductivity between the cover plate 20 and the shaft cover 10, and prevent the heat of the battery component from being transferred to the more sophisticated hinge device 70. For example, when a user uses a folding screen mobile phone, since the first adhesive layer 311 can disperse and buffer the pressure and impact force between the cover plate 20 and the shaft cover 10, the user can ensure that the cover plate 20 and the shaft cover 10 will not produce excessive stress or damage due to external force or collision, thereby affecting the structural strength and rigidity of the folding screen mobile phone; at the same time, since the first adhesive layer 311 can reduce the thermal conductivity between the cover plate 20 and the shaft cover 10, the user can ensure that the battery component and the hinge device 70 will not fail due to excessive temperature.

[0068] The material of the first adhesive layer 311 can be various resins, elastomers, etc., such as epoxy resin, polyurethane resin, silicone rubber, etc., which can firmly glue the anti-friction layer to the cover plate 20, and have certain flexibility and elasticity to adapt to the relative sliding between the cover plate 20 and the shaft cover 10. The material of the second anti-friction layer 322 can be a material with a lower friction coefficient, such as polytetrafluoroethylene, mylar, wear-resistant foam, ceramics, alloys, oxides, fluoroplastics, etc., which can reduce the friction and noise between the cover plate 20 and the shaft cover 10, and have high wear resistance and temperature resistance.

[0069] In a specific embodiment of the present application, the first friction-reducing layer 312 in the embodiment of the present application includes a polytetrafluoroethylene layer or a mylar layer. By setting the polytetrafluoroethylene layer or the mylar layer as the first friction-reducing layer 312, the wear resistance and temperature resistance of the first friction-reducing layer 312 can be effectively improved, so that the first friction-reducing layer 312 can maintain a good friction-reducing effect under harsh conditions such as high temperature, high speed, and high pressure, and will not produce dangerous situations such as toxic gases or fire due to thermal decomposition; at the same time, the chemical inertness and electrical insulation of the first friction-reducing layer 312 can also be ensured, so that the first friction-reducing layer 312 can resist corrosion from various strong acids, strong alkalis, strong oxidants and other chemicals, as well as various electrical interferences such as electric fields, currents, and static electricity.

[0070] The polytetrafluoroethylene layer or the mylar layer as the first anti-friction layer 312 can also effectively reduce the surface energy and friction coefficient of the first anti-friction layer 312, so that the first anti-friction layer 312 has excellent non-stickiness and self-lubricating properties, so that the cover plate 20 and the shaft cover 10 can slide smoothly relative to each other without any impurities or stains adhering.

[0071] It should be noted that, compared with other materials, the polytetrafluoroethylene layer or mylar layer has the following advantages when applied to the first friction-reducing layer 312: polytetrafluoroethylene is the material with the smallest friction coefficient among known solid materials, and its friction coefficient is about 0.04, while the friction coefficient of other plastics or metals is usually between 0.2 and 0.5. Therefore, polytetrafluoroethylene can greatly reduce the friction and noise between the cover plate 20 and the shaft cover 10; polytetrafluoroethylene has excellent wear resistance, and ranks first in wear resistance among plastics. It is many times higher than plastics such as nylon, polypropylene, and polytetrafluoroethylene, and is 4 times that of carbon steel and stainless steel. Therefore, polytetrafluoroethylene can extend the service life of the cover plate 20 and the shaft cover 10; polytetrafluoroethylene has excellent temperature resistance and can maintain good physical properties in the range of -190 to 260°C. It will not change significantly below 250°C, while other plastics or metals are easily deformed or oxidized at high temperatures. Therefore, polytetrafluoroethylene can adapt to high temperature environments; polytetrafluoroethylene has excellent chemical inertness and is almost not corroded by any chemical except molten alkali metals, fluorinated media and molten strong alkali. It is resistant to aqua regia and all organic solvents, while other plastics or metals are easily corroded or dissolved in acids, alkalis or organic solvents. Therefore, polytetrafluoroethylene can resist various chemical corrosion; polytetrafluoroethylene has excellent electrical insulation and is not affected by the environment and frequency.

[0072] Among them, mylar is a polyester film, also known as polyethylene terephthalate (PET). It has excellent mechanical properties, heat resistance, light resistance, aging resistance and transparency. Its friction coefficient is between 0.2 and 0.4, which is lower than other plastics or metals. Therefore, mylar can reduce the friction and noise between the cover plate 20 and the shaft cover 10; mylar has good wear resistance, and its wear resistance ranks in the middle among plastics. It is higher than plastics such as nylon and polypropylene, but lower than polytetrafluoroethylene. Therefore, mylar can maintain a certain service life; mylar has good temperature resistance and can maintain good physical properties in the range of -70 to 150°C. It will not change significantly below 100°C, while other plastics or metals are easily deformed or oxidized at high temperatures. Therefore, mylar can adapt to general temperature environments; mylar has good chemical inertness, and is generally not corroded by other chemicals except for extreme conditions such as strong alkalis, strong acids, and strong oxidants. It is resistant to most organic solvents and oils, while other plastics or metals are easily corroded or dissolved in acids, alkalis or organic solvents. Therefore, mylar can resist general chemical corrosion; in summary, the polytetrafluoroethylene layer or mylar layer as the first anti-friction layer 312 has higher friction reduction effect, wear resistance, temperature resistance, chemical inertness and electrical insulation compared to other materials, which can better protect the hinge device 70 and battery components in the folding screen mobile phone, and improve the service life and safety of the folding screen mobile phone.

[0073] Please refer to Figure 8 As shown, in another embodiment, the blocking portion 30 in the embodiment of the present application further includes a second blocking layer group 32, which is mounted on the shaft cover 10, and the position of the second blocking layer group 32 corresponds to the position of the first blocking layer group 31, and the end of the second blocking layer group 32 close to the cover plate 20 has a second anti-friction surface 3221. By arranging the second blocking layer group 32 on the shaft cover 10 and making the position of the second blocking layer group 32 correspond to the position of the first blocking layer group 31, the airtightness and waterproofness of the blocking portion 30 can be effectively increased, and dust, moisture and other impurities can be prevented from entering the hinge device 70 in the folding screen mobile phone, affecting the smoothness and stability of the movement of the hinge device 70; for example, when the user uses the folding screen mobile phone, since the second blocking layer group 32 can form a closed space with the first blocking layer group 31, the hinge device 70 is isolated from the external environment, and the user can ensure that the hinge device 70 will not be invaded or accumulated by dust, moisture and other impurities, thereby affecting the smoothness and stability of the movement of the hinge device 70.

[0074] By providing the second anti-friction surface 3221 at one end of the second sealing layer group 32 close to the cover plate 20, which cooperates with the first anti-friction surface 3121, the friction coefficient between the shaft cover 10 and the cover plate 20 can be effectively reduced, the friction and noise can be reduced, and the comfort of use of the folding screen mobile phone can be improved; at the same time, the service life of the shaft cover 10 and the cover plate 20 can be extended, and the wear or damage of the shaft cover 10 and the cover plate 20 caused by long-term friction can be avoided; for example, when the user needs to change the folding screen mobile phone from an unfolded state to a folded state or vice versa, since the second anti-friction surface 3221 and the first anti-friction surface 3121 of the second sealing layer group 32 can reduce the friction and noise between the cover plate 20, the user can perform the folding or unfolding operation more smoothly and quietly, and at the same time will not cause excessive damage to the shaft cover 10 and the cover plate 20.

[0075] Specifically, by arranging the second sealing layer group 32 on the shaft cover 10 and making the position of the second sealing layer group 32 correspond to the position of the first sealing layer group 31, the airtightness and waterproofness of the sealing part 30 can be effectively increased, and impurities such as dust and moisture can be prevented from entering the hinge device 70 in the folding screen mobile phone, affecting the smoothness and stability of the movement of the hinge device 70; for example, when the user uses the folding screen mobile phone, since the second sealing layer group 32 can form an enclosed space with the first sealing layer group 31 to isolate the hinge device 70 from the external environment, the user can ensure that the hinge device 70 will not be invaded or accumulated by impurities such as dust and moisture, thereby affecting the smoothness and stability of the movement of the hinge device 70.

[0076] Please refer to Figure 8 As shown, the second sealing layer group 32 in the embodiment of the present application includes a second adhesive layer 321 and a second anti-friction layer 322, the second adhesive layer 321 is arranged between the second anti-friction layer 322 and the cover plate 20 to glue the second anti-friction layer 322 to the shaft cover 10, and the second anti-friction surface 3221 is arranged on the second anti-friction layer 322. By providing the second adhesive layer 321 and the second friction-reducing layer 322, the position of the second sealing layer group 32 on the shaft cover 10 can be effectively fixed and supported to prevent the second sealing layer group 32 from moving or falling off, thereby improving the structural stability and reliability of the folding screen mobile phone; at the same time, the flexibility and elasticity of the second sealing layer group 32 can also be enhanced, so that the second sealing layer group 32 can adapt to the relative sliding between the shaft cover 10 and the cover plate 20 without causing cracks or deformation; by providing the second adhesive layer 321, the pressure and impact force between the shaft cover 10 and the cover plate 20 can also be effectively dispersed and buffered, thereby preventing excessive stress or damage between the shaft cover 10 and the cover plate 20, thereby improving the pressure resistance and impact resistance of the folding screen mobile phone.

[0077] At the same time, the second adhesive layer 321 can be made of heat-insulating adhesive material to reduce the thermal conductivity between the cover plate 20 and the shaft cover 10, and prevent the heat of the battery component from being transferred to the more sophisticated hinge device 70. For example, when a user uses a folding screen mobile phone, since the second adhesive layer 321 can disperse and buffer the pressure and impact force between the cover plate 20 and the shaft cover 10, the user can ensure that the cover plate 20 and the shaft cover 10 will not produce excessive stress or damage due to external force or collision, thereby affecting the structural strength and rigidity of the folding screen mobile phone; at the same time, since the second adhesive layer 321 can reduce the thermal conductivity between the cover plate 20 and the shaft cover 10, the user can ensure that the battery component and the hinge device 70 will not fail due to excessive temperature.

[0078] The material of the second adhesive layer 321 can be various resins, elastomers, etc., such as epoxy resin, polyurethane resin, silicone rubber, etc., which can firmly glue the anti-friction layer to the cover plate 20, and have certain flexibility and elasticity to adapt to the relative sliding between the cover plate 20 and the shaft cover 10. The material of the second anti-friction layer 322 can be a material with a lower friction coefficient, such as polytetrafluoroethylene, mylar, ceramics, alloys, oxides, fluoroplastics, etc., which can reduce the friction and noise between the cover plate 20 and the shaft cover 10, and have high wear resistance and temperature resistance.

[0079] In a specific embodiment of the present application, the second anti-friction layer 322 in the embodiment of the present application includes a polytetrafluoroethylene layer or a mylar layer. By providing a polytetrafluoroethylene layer or a mylar layer as the second anti-friction layer 322, the wear resistance and temperature resistance of the second anti-friction layer 322 can be effectively improved, so that the second anti-friction layer 322 can maintain a good anti-friction effect under harsh conditions such as high temperature, high speed, and high pressure, and will not produce dangerous situations such as toxic gases or fire due to thermal decomposition; at the same time, the chemical inertness and electrical insulation of the second anti-friction layer 322 can also be ensured, so that the second anti-friction layer 322 can resist corrosion from various strong acids, strong alkalis, strong oxidants and other chemicals, as well as various electrical interferences such as electric fields, currents, and static electricity.

[0080] The polytetrafluoroethylene layer or the mylar layer as the second anti-friction layer 322 can also effectively reduce the surface energy and friction coefficient of the second anti-friction layer 322, so that the second anti-friction layer 322 has excellent non-stickiness and self-lubricating properties, so that the cover plate 20 and the shaft cover 10 can slide smoothly relative to each other without any impurities or stains adhering.

[0081] It should be noted that, compared with other materials, the polytetrafluoroethylene layer or mylar layer has the following advantages when applied to the second anti-friction layer 322: polytetrafluoroethylene is the material with the smallest friction coefficient among known solid materials, and its friction coefficient is about 0.04, while the friction coefficient of other plastics or metals is usually between 0.2 and 0.5. Therefore, polytetrafluoroethylene can greatly reduce the friction and noise between the cover plate 20 and the shaft cover 10; polytetrafluoroethylene has excellent wear resistance, and ranks first in wear resistance among plastics. It is many times higher than plastics such as nylon, polypropylene, and polytetrafluoroethylene, and is 4 times that of carbon steel and stainless steel. Therefore, polytetrafluoroethylene can extend the service life of the cover plate 20 and the shaft cover 10; polytetrafluoroethylene has excellent temperature resistance and can maintain good physical properties in the range of -190 to 260°C. It will not change significantly below 250°C, while other plastics or metals are easily deformed or oxidized at high temperatures. Therefore, polytetrafluoroethylene can adapt to high temperature environments; polytetrafluoroethylene has excellent chemical inertness and is almost not corroded by any chemical except molten alkali metals, fluorinated media and molten strong alkali. It is resistant to aqua regia and all organic solvents, while other plastics or metals are easily corroded or dissolved in acids, alkalis or organic solvents. Therefore, polytetrafluoroethylene can resist various chemical corrosion; polytetrafluoroethylene has excellent electrical insulation and is not affected by the environment and frequency.

[0082] Among them, mylar is a polyester film, also known as polyethylene terephthalate (PET). It has excellent mechanical properties, heat resistance, light resistance, aging resistance and transparency. Its friction coefficient is between 0.2 and 0.4, which is lower than other plastics or metals. Therefore, mylar can reduce the friction and noise between the cover plate 20 and the shaft cover 10; mylar has good wear resistance, and its wear resistance ranks in the middle among plastics. It is higher than plastics such as nylon and polypropylene, but lower than polytetrafluoroethylene. Therefore, mylar can maintain a certain service life; mylar has good temperature resistance and can maintain good physical properties in the range of -70 to 150°C. It will not change significantly below 100°C, while other plastics or metals are easily deformed or oxidized at high temperatures. Therefore, mylar can adapt to general temperature environments; mylar has good chemical inertness, and is generally not corroded by other chemicals except for extreme conditions such as strong alkalis, strong acids, and strong oxidants. It is resistant to most organic solvents and oils, while other plastics or metals are easily corroded or dissolved in acids, alkalis or organic solvents. Therefore, mylar can resist general chemical corrosion; in summary, the polytetrafluoroethylene layer or mylar layer as the second anti-friction layer 322 has higher friction reduction effect, wear resistance, temperature resistance, chemical inertness and electrical insulation compared to other materials, which can better protect the hinge device 70 and battery components in the folding screen mobile phone, and improve the service life and safety of the folding screen mobile phone.

[0083] In the embodiment of the present application, a plurality of first convex strip structures 3122 are disposed on the first friction reducing layer 312 . The length extension direction of the first convex strip structures 3122 is perpendicular to the length direction of the first friction reducing layer 312 . The plurality of first convex strip structures 3122 are disposed at intervals along the length direction of the first friction reducing layer 312 . By arranging multiple first convex strip structures 3122 on the first friction-reducing layer 312 and making the length extension direction of the first convex strip structures 3122 perpendicular to the length direction of the first friction-reducing layer 312, the sealing performance can be ensured while increasing the air flow between the first friction-reducing layer 312 and the shaft cover 10, thereby increasing the heat dissipation and cooling effects of the first friction-reducing layer 312 on the shaft cover 10; for example, when a user uses a folding screen mobile phone, since multiple first convex strip structures 3122 can form multiple tiny gaps with the shaft cover 10, the user can ensure that there is enough contact area between the first friction-reducing layer 312 and the shaft cover 10 to support and fix the position of the first blocking layer group 31 on the cover plate 20, thereby improving the structural stability and reliability of the folding screen mobile phone; at the same time, since multiple first convex strip structures 3122 can form multiple tiny channels with the shaft cover 10, the user can ensure that there is enough air flow between the first friction-reducing layer 312 and the shaft cover 10 to dissipate and reduce the heat generated between the battery component and the hinge device 70, thereby improving the heat dissipation and cooling effects of the folding screen mobile phone.

[0084] In addition, by arranging multiple first convex strip structures 3122 at intervals along the length direction of the first friction-reducing layer 312, the friction coefficient between the first friction-reducing layer 312 and the shaft cover 10 can be effectively reduced, thereby reducing the friction and noise of the first friction-reducing layer 312 on the shaft cover 10; for example, when the user needs to change the folding screen mobile phone from an unfolded state to a folded state or vice versa, since the multiple first convex strip structures 3122 can form multiple tiny buffer areas with the shaft cover 10, the user can ensure that there is sufficient buffering force between the first friction-reducing layer 312 and the shaft cover 10 to reduce and disperse the friction and noise generated by relative sliding, thereby improving the comfort of using the folding screen mobile phone.

[0085] In another embodiment, in order to further prevent dust and other impurities from entering the hinge device 70, a plurality of second convex strip structures 3222 are provided on the second friction-reducing layer 322 in the embodiment of the present application, the length extension direction of the second convex strip structure 3222 is perpendicular to the length direction of the second friction-reducing layer 322, and the plurality of second convex strip structures 3222 are arranged at intervals along the length direction of the second friction-reducing layer 322; the first friction-reducing layer 312 and the second friction-reducing layer 322 are meshed with each other through the plurality of first convex strip structures 3122 and the plurality of second convex strip structures 3222. It should be noted that the first friction-reducing layer 312 and the second friction-reducing layer 322 are both very thin material layers, and the first convex strip structure 3122 and the second convex strip structure 3222 thereon are also very small structures, which have little effect on the relative sliding between the cover plate 20 and the shaft cover 10.

[0086] On the contrary, by making the first friction-reducing layer 312 and the second friction-reducing layer 322 mesh with each other through the multiple first convex strip structures 3122 and the multiple second convex strip structures 3222, the first sealing layer group 31 and the second sealing layer group 32 can be effectively tightly fitted to prevent gaps or looseness between the first sealing layer group 31 and the second blocking layer group 32, thereby improving the sealing and waterproof properties of the foldable screen mobile phone; at the same time, relative sliding between the first sealing layer group 31 and the second blocking layer group 32 can also be achieved, so that the foldable screen mobile phone can be folded or unfolded at different angles, thereby meeting the user's needs for the foldable screen mobile phone in different application scenarios; for example, when the user needs to fold the foldable screen mobile phone from an unfolded When the state changes to a folded state or vice versa, since the multiple first convex strip structures 3122 and the multiple second convex strip structures 3222 can mesh with each other, the user can ensure that there is sufficient tightness between the first blocking layer group 31 and the second blocking layer group 32 to prevent dust, moisture and other impurities from entering the hinge device 70 in the folding screen mobile phone, thereby improving the sealing and waterproofness of the folding screen mobile phone; at the same time, since the multiple first convex strip structures 3122 and the multiple second convex strip structures 3222 can slide with each other, the user can ensure that there is sufficient flexibility between the first blocking layer group 31 and the second blocking layer group 32 to adapt to different folding or unfolding angles, thereby meeting the user's needs for folding screen mobile phones in different application scenarios.

[0087] In other embodiments, only a plurality of second convex strip structures 3222 may be provided on the second friction-reducing layer 322, without providing the first convex strip structure 3122. By providing a plurality of second convex strip structures 3222 on the second friction-reducing layer 322, and making the length extension direction of the second convex strip structures 3222 perpendicular to the length direction of the second friction-reducing layer 322, the contact area between the second friction-reducing layer 322 and the cover plate 20 can be effectively increased, thereby increasing the supporting force and stability of the second friction-reducing layer 322 on the cover plate 20; at the same time, the air flow between the second friction-reducing layer 322 and the cover plate 20 can also be increased, thereby increasing the heat dissipation effect and cooling effect of the second friction-reducing layer 322 on the cover plate 20; for example When the user uses the foldable screen mobile phone, since the multiple second convex strip structures 3222 can form multiple tiny gaps with the cover plate 20, the user can ensure that there is enough contact area between the second anti-friction layer 322 and the cover plate 20 to support and fix the position of the second blocking layer group 32 on the shaft cover 10, thereby improving the structural stability and reliability of the foldable screen mobile phone; at the same time, since the multiple second convex strip structures 3222 can form multiple tiny channels with the cover plate 20, the user can ensure that there is enough air flow between the second anti-friction layer 322 and the cover plate 20 to dissipate and reduce the heat generated between the battery component and the hinge device 70, thereby improving the heat dissipation and cooling effects of the foldable screen mobile phone.

[0088] In order to provide installation space for the first blocking layer group 31 and prevent the first blocking layer group 31 from moving, a receiving recess is provided on the side of the cover plate 20 close to the shaft cover 10 in the embodiment of the present application, and the first blocking layer group 31 is provided in the receiving recess. By providing the receiving recess on the side of the cover plate 20 close to the shaft cover 10 and providing the first blocking layer group 31 in the receiving recess, the occupation rate of the space between the cover plate 20 and the shaft cover 10 by the first blocking layer group 31 can be effectively reduced, making the thickness and weight of the folding screen mobile phone thinner and more portable; at the same time, the beauty and fashion of the folding screen mobile phone can also be increased, making the folding screen mobile phone more in line with the aesthetic needs of the user; for example, when the user uses the folding screen mobile phone, since the receiving recess can hide the first blocking layer group 31 inside the cover plate 20, the user can ensure that the appearance of the folding screen mobile phone is flatter and simpler.

[0089] In addition, by providing a receiving recess on the side of the cover plate 20 close to the shaft cover 10 and providing the first blocking layer group 31 in the receiving recess, the close fit between the first blocking layer group 31 and the cover plate 20 can be effectively maintained to prevent the first blocking layer group 31 from moving or falling off, thereby improving the structural stability and reliability of the folding screen mobile phone; at the same time, the sealing and waterproof properties of the folding screen mobile phone can be increased to prevent dust, moisture and other impurities from entering the hinge device 70 in the folding screen mobile phone; for example, when the user uses the folding screen mobile phone, since the receiving recess can fix the first blocking layer group 31 inside the cover plate 20, the user can ensure that there is sufficient tightness between the first blocking layer group 31 and the cover plate 20 to prevent dust, moisture and other impurities from entering the hinge device 70 in the folding screen mobile phone, thereby improving the sealing and waterproof properties of the folding screen mobile phone.

[0090] The electronic device in the embodiment of the present application has a folded state in which the cover plate 20 is shielded by the second body 60. When the electronic device is in the folded state, the flexible screen 80 is located outside the electronic device. That is, the electronic device in the embodiment of the present application is an external folding electronic device, which can protect the cover plate 20 from damage when the electronic device is not in use, and at the same time, when the electronic device is in use, the screen can be used in the folded state, and the cover plate 20 and the flexible screen 80 can be conveniently unfolded, thereby improving the user experience of the electronic device.

[0091] Please refer to Figures 9 to 14As shown, the hinge device 70 in the embodiment of the present application includes a base 71, a first swing arm 72 and a second swing arm 73, the first swing arm 72 is rotatably connected to the base 71, and the second swing arm 73 is rotatably connected to the base 71; wherein, the first body 50 is mounted on the first swing arm 72, the second body 60 is mounted on the second swing arm 73, the cover plate 20 is connected to the first body 50, and the shaft cover 10 is connected to the second swing arm 73. Specifically, the second body 60 is slidably mounted on the second swing arm 73 in the direction away from and close to the second swing arm, so that when the electronic device is unfolded or folded, the cover plate 20 and the flexible screen 80 can be rotated synchronously and the applicable position can be adjusted. The specific structure can refer to the mechanism of the external folding mobile phone, which will not be repeated here. The shell assembly in the embodiment of the present application also includes a decorative shell 40, which is mounted on the base 71 and extends along the length direction of the hinge device 70. When the electronic device is unfolded or folded, some structural elements in the hinge device 70 can be covered, thereby increasing the aesthetic appearance and dustproof and waterproof functions of the electronic device.

[0092] Please refer to Figures 1 to 14 As shown, according to the second aspect of the present application, an electronic device is provided, which includes a first body 50, a second body 60, a flexible screen 80, and a hinge device 70 arranged between the first body 50 and the second body 60, the two ends of the flexible screen 80 are respectively installed on the first body 50 and the second body 60, and the shell assembly is the above-mentioned shell assembly.

[0093] By setting the blocking portion 30 to include a first blocking layer group 31, the first blocking layer group 31 is installed between the shaft cover 10 and the cover plate 20, and extends from one end of the shaft cover 10 in the length direction to the other end of the shaft cover 10, and is used to block the gap between the cover plate 20 and the shaft cover 10; it can be achieved that when the electronic device is unfolded or folded, the blocking portion 30 can effectively prevent foreign matter such as dust and moisture from entering the hinge device 70, and protect the hinge device 70 from damage. By setting the first blocking layer group 31 to have a friction-reducing surface, it can be achieved that when the electronic device is unfolded or folded, the blocking portion 30 can reduce the friction between the hinge device 70 and improve the smoothness and stability of the rotation. Compared with the existing solution of CNC machining ribs on the shaft cover, the embodiment of the present application can shorten the processing time and reduce the processing difficulty. Compared with the solution of using a brush in the prior art, it saves more space.

[0094] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A housing assembly, the housing assembly being applied to an electronic device, the electronic device comprising a first body, a second body, a flexible screen, and a hinge device arranged between the first body and the second body, the flexible screen being mounted on the first body and the second body, characterized in that: The housing assembly comprises: A shaft cover, which is arranged on a side of the hinge device away from the flexible screen and extends along the length direction of the hinge device; a cover plate, the cover plate being arranged on a side of the second body opposite to the flexible screen and movably covering an outer side of the shaft cover, so that the cover plate slides relative to the shaft cover during the swinging of the first body relative to the second body; A blocking portion, the blocking portion comprising a first blocking layer group, the first blocking layer group being installed between the shaft cover and the cover plate and extending from one end of the shaft cover in the length direction to the other end of the shaft cover, for blocking the gap between the cover plate and the shaft cover; The first blocking layer group is arranged on the cover plate, and one end of the first blocking layer group close to the shaft cover has a first friction-reducing surface; The first sealing layer group includes a first adhesive layer and a first anti-friction layer, the first adhesive layer is arranged between the first anti-friction layer and the cover plate to glue the first anti-friction layer to the cover plate, and the first anti-friction surface is arranged on the first anti-friction layer; the sealing part also includes a second sealing layer group, the second sealing layer group is installed on the shaft cover, the position of the second sealing layer group corresponds to the position of the first sealing layer group, and the end of the second sealing layer group close to the cover plate has a second anti-friction surface, and the second anti-friction surface can cooperate with the first anti-friction surface to form a face-to-face seal.

2. The housing assembly according to claim 1, wherein: The first anti-friction layer includes a polytetrafluoroethylene layer or a mylar layer.

3. The housing assembly according to claim 1, wherein: The second sealing layer group includes a second adhesive layer and a second anti-friction layer, the second adhesive layer is arranged between the second anti-friction layer and the cover plate to glue the second anti-friction layer to the shaft cover, and the second anti-friction surface is arranged on the second anti-friction layer.

4. The housing assembly according to claim 3, wherein: The second anti-friction layer includes a polytetrafluoroethylene layer or a mylar layer.

5. The housing assembly according to claim 3, wherein: A plurality of first convex stripe structures are arranged on the first friction reducing layer. The length extension direction of the first convex stripe structures is perpendicular to the length direction of the first friction reducing layer. The plurality of first convex stripe structures are arranged at intervals along the length direction of the first friction reducing layer.

6. The housing assembly according to claim 5, characterized in that: A plurality of second ridge structures are arranged on the second friction reducing layer, the length extension direction of the second ridge structures is perpendicular to the length direction of the second friction reducing layer, and the plurality of second ridge structures are arranged at intervals along the length direction of the second friction reducing layer; the first friction reducing layer and the second friction reducing layer are meshed with each other through the plurality of the first ridge structures and the plurality of the second ridge structures.

7. The housing assembly according to claim 1, wherein: A receiving recess is provided on one side of the cover plate close to the shaft cover, and the first sealing layer group is provided in the receiving recess.

8. The housing assembly according to claim 1, wherein: The electronic device has a folded state in which the cover is shielded by the second body. When the electronic device is in the folded state, the flexible screen is located outside the electronic device.

9. The housing assembly according to any one of claims 1 to 8, characterized in that: The hinge device includes a base, a first swing arm and a second swing arm, the first swing arm is rotatably connected to the base, and the second swing arm is rotatably connected to the base; wherein the first body is mounted on the first swing arm, the second body is mounted on the second swing arm, the cover plate is connected to the first body, and the shaft cover is connected to the second swing arm.

10. An electronic device, characterized in that: The electronic device includes a first body, a second body, a flexible screen, and a hinge device arranged between the first body and the second body, two ends of the flexible screen are respectively installed on the first body and the second body, and the shell assembly is the shell assembly described in any one of claims 1 to 9.

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