Foldable electronic device

Abstract

The embodiment of the invention provides foldable electronic equipment, and belongs to the technical field of electronic equipment. The foldable electronic equipment comprises a flexible screen, a middle frame assembly and a covering assembly. The middle frame assembly comprises two middle frames, the two middle frames are arranged on the same side of the flexible screen, and the projection of each middle frame is partially overlapped with the projection of the flexible screen in the thickness direction of the flexible screen. The covering assembly comprises two covering pieces, each covering piece corresponds to one middle frame and is connected to the corresponding middle frame, part of each covering piece is arranged on the display side of the flexible screen, each covering piece covers a gap between the corresponding middle frame and the flexible screen, at least part of each covering piece has magnetism, and the shielding pieces are arranged on the display side of the flexible screen. Therefore, acting force which attracts each other is generated between the two covering pieces. According to the arrangement, the magnet space can be released by removing the magnet mounted in the middle frame, so that the foldable electronic equipment can be miniaturized, light and thin, and the constraint on the arrangement and the size of other devices is relieved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of electronic devices, and in particular to a foldable electronic device. Background Art

[0002] At present, a foldable electronic device includes a first body, a second body, a hinge mechanism and a flexible screen. The first body is connected to the second body through the hinge mechanism, and the first body and the second body are respectively connected to the flexible screen. In order to meet the needs of the opening and closing experience, each of the first body and the second body includes a middle frame and a magnet. The magnet is installed on the middle frame, so that the foldable electronic device has an opening and closing force. However, the magnet will occupy a certain space inside the foldable electronic device, restricting the layout and / or size of other components inside the foldable electronic device. In addition, it also limits the miniaturization and thinness of foldable electronic devices. Summary of the Invention

[0003] An embodiment of the present application provides a foldable electronic device. By removing the magnets installed on the middle frame, the magnet space can be released, so that the foldable electronic device can be miniaturized and lightweight, and the constraints on the layout and size of other devices are removed.

[0004] The first aspect of the present application provides a foldable electronic device, comprising a flexible screen, a middle frame assembly, and a cover assembly. The middle frame assembly comprises two middle frames, the two middle frames are arranged on the same side of the flexible screen, and along the thickness direction of the flexible screen, the projection of each middle frame partially overlaps with the projection of the flexible screen. The cover assembly comprises two covering members, each covering member corresponds to a middle frame, each covering member is connected to the corresponding middle frame, at least a portion of each covering member is arranged on the display side of the flexible screen, and each covering member is at least partially arranged in the gap between the corresponding middle frame and the flexible screen, and at least a portion of each covering member is magnetic, so that a mutual attraction force is generated between the two covering members.

[0005] The foldable electronic device provided in the embodiment of the present application adopts a magnetic covering member, in which the magnetism of a portion of one covering member is opposite to the magnetism of a portion of another covering member, so that a mutual attraction force is generated between the two covering members, thereby causing the foldable electronic device to generate an opening and closing force, thereby being able to meet the requirements of the opening and closing experience.

[0006] The cover is an existing part of the foldable electronic device. On the basis of generating the opening and closing force, it does not add new parts or take up too much space in the foldable electronic device. It can free up space for arranging magnets in the prior art, thereby removing the constraints on the arrangement and / or size of other devices, and further improving the performance of the foldable electronic device. In addition, by removing the magnets in the prior art, the constraints of the magnets on the thickness of the foldable electronic device can also be removed, so that the foldable electronic device can be miniaturized and thinner. In addition, at least a portion of the cover can be made of a magnetic material, so that the cover has magnetism without changing the structure of the cover, which can reduce the design cost of the cover.

[0007] In a possible implementation, the covering member is an integrally formed magnetic plastic member.

[0008] In this way, the cover is made of magnetic plastic and is integrally formed by injection molding, so that the entire cover has magnetic properties, can obtain target magnetic force, and meet the opening and closing force requirements.

[0009] In a possible implementation, the covering member includes a plurality of first magnetic segments connected in sequence, and the magnetic properties of two adjacent first magnetic segments are opposite.

[0010] In this way, the covering member has anisotropy, so that a greater magnetic force can be obtained at the same magnetic filler content, and thus the mutual attraction force between the two covering members is greater.

[0011] In a possible implementation, the magnetic plastic part includes a plastic base material and a magnetic filler, and the content of the magnetic filler is greater than or equal to 20 vol%.

[0012] This ensures that the magnetic force generated by the magnetic plastic part meets the required level, ensuring the force between the two covering parts meets the required adsorption requirements. At the same time, the mechanical properties of the magnetic plastic part can also be guaranteed to meet the required level. Therefore, by controlling the content of magnetic filler, the mechanical properties and magnetic force of the magnetic plastic part can be effectively balanced.

[0013] In one possible embodiment, the content of the magnetic filler is less than or equal to 50 vol%.

[0014] In this way, it is possible to avoid the content of the magnetic filler being too high, which would result in the mechanical properties of the magnetic plastic part being too low, and the strength of the magnetic plastic part being too low.

[0015] In a possible implementation, the magnetic plastic part further includes a reinforcing filler, and the reinforcing filler is glass fiber or carbon fiber.

[0016] In this way, by adding reinforcing fillers, the plastic mechanical properties of the magnetic plastic parts can be further improved.

[0017] In a possible implementation, the covering member includes a plastic body and an integrally formed magnetic plastic body, and the magnetic plastic body is connected to the plastic body.

[0018] In this way, the cover can provide magnetic force while also meeting the mechanical strength requirements.

[0019] In one possible embodiment, the plastic body is at least partially disposed in the gap between the middle frame and the flexible screen, and at least partially disposed on the display side of the flexible screen. Along the thickness of the flexible screen, the magnetic plastic body is disposed on the side of the plastic body facing the middle frame, with the projection of the plastic body in the thickness direction of the flexible screen at least partially overlapping with the magnetic plastic body.

[0020] In this way, the magnetic plastic body is placed on the side of the plastic body facing the midframe, making it an internal component rather than a surface for external appearance, which reduces strength and coating reliability risks. Furthermore, the plastic body is made of plastic and serves as an external surface, ensuring both mechanical strength and appearance requirements.

[0021] In a possible implementation, the magnetic plastic body includes a plurality of second magnetic segments connected in sequence, and the magnetic properties of two adjacent second magnetic segments are opposite.

[0022] In this way, the magnetic plastic body has anisotropy, so that a greater magnetic force can be obtained at the same magnetic filler content, and thus a greater acting force between the two covering members.

[0023] In a possible implementation, the magnetic plastic body includes a plastic base material and a magnetic filler, and the content of the magnetic filler is greater than or equal to 20 vol%.

[0024] This ensures that the magnetic force generated by the magnetic plastic meets the required level, ensuring that the force between the two covering elements meets the required adsorption requirements. At the same time, the mechanical properties of the magnetic plastic also meet the required levels. Therefore, by controlling the content of the magnetic filler, the mechanical properties and magnetic force of the magnetic plastic can be effectively balanced.

[0025] In one possible embodiment, the content of the magnetic filler is less than or equal to 50 vol%.

[0026] In this way, it is possible to avoid the content of the magnetic filler being too high, which would result in the mechanical properties of the magnetic plastic part being too low, and the strength of the magnetic plastic part being low.

[0027] In a possible implementation, the magnetic plastic body further includes a reinforcing filler, and the reinforcing filler is glass fiber or carbon fiber.

[0028] In this way, by adding reinforcing fillers, the plastic mechanical properties of the magnetic plastic body can be further improved.

[0029] In a possible implementation, the plastic body is provided with a slot, and the magnetic plastic body is arranged inside the slot, so that the plastic body and the magnetic plastic body are engaged with each other in the thickness direction of the flexible screen.

[0030] In this way, the plastic body and the magnetic plastic body will not accidentally separate in the thickness direction of the flexible screen, ensuring a secure connection between the plastic body and the magnetic plastic body. In addition, the magnetic plastic body can be snapped into the slot in a direction perpendicular to the thickness direction of the flexible screen, allowing the magnetic plastic body to snap into the plastic body, making the connection simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the structure of a foldable electronic device in the related art;

[0032] Figure 2 A schematic structural diagram of a foldable electronic device provided in an embodiment of the present application;

[0033] Figure 3 for Figure 2 Schematic diagram of the cross section at AA in the middle;

[0034] Figure 4 for Figure 2 A schematic structural diagram of a cover assembly in a foldable electronic device is shown;

[0035] Figure 5 A schematic diagram of a magnetic pole structure of a cover member provided in an embodiment of the present application;

[0036] Figure 6 A schematic diagram of the three-dimensional structure of another covering assembly provided in an embodiment of the present application;

[0037] Figure 7 for Figure 6 A schematic diagram of the three-dimensional structure of the covering member in the covering assembly shown;

[0038] Figure 8 for Figure 7 An exploded schematic diagram of the cover shown;

[0039] Figure 9 for Figure 8 A partial enlarged schematic diagram of point A in the middle;

[0040] Figure 10 A schematic cross-sectional view of another foldable electronic device provided in an embodiment of the present application;

[0041] Figure 11 A schematic diagram of the magnetic pole structure of a magnetic plastic body provided in an embodiment of the present application.

[0042] Description of reference numerals:

[0043] 100. Foldable electronic devices;

[0044] 10. Flexible screen;

[0045] 20. Middle frame assembly; 21. Middle frame;

[0046] 30. Cover assembly; 31. Cover member; 311. First magnetic segment; 312. First cover segment; 313. Second cover segment; 314. Third cover segment;

[0047] 32. Plastic body; 321. Card slot;

[0048] 33. Magnetic plastic body; 331. Second magnetic segment;

[0049] 40. Rotating shaft mechanism. DETAILED DESCRIPTION

[0050] Figure 1 FIG. 1 is a schematic diagram of a foldable electronic device in the related art. Figure 1 As shown, the foldable electronic device includes two middle frames 110, a hinge mechanism 120, a flexible screen 140 and a plurality of magnets 130. The flexible screen 140 and the magnet 130 are arranged on the same side of the middle frame 110, and the flexible screen 140 is connected to the middle frame 110. The two middle frames 110 are rotatably connected through the hinge mechanism 120, so that the foldable electronic device has a folded state and an unfolded state. Three magnets 130 are provided on each middle frame 110, and the magnets 130 on the two middle frames 110 are symmetrically arranged. The magnets 130 at corresponding positions on the two middle frames 110 are magnetically connected, which can generate an opening and closing force to meet the opening and closing requirements.

[0051] However, the magnet 130 and the middle frame 110, when assembled together, take up a lot of space, compressing the space available for other components (such as a battery) within the foldable electronic device. This restricts the placement and / or size of other components within the foldable electronic device, affecting the performance of the foldable electronic device. Furthermore, this also limits the miniaturization and thinness of foldable electronic devices.

[0052] In view of this, an embodiment of the present application provides a foldable electronic device 100, in which at least a portion of the cover 31 is made of magnetic plastic, so that the cover 31 generates a magnetic force, thereby there is a mutual attraction force between the two covers 31, and then there is an opening and closing force in the foldable electronic device 100, meeting the opening and closing requirements. It can be seen that by magnetically coupling the cover 31, the magnets in the prior art can be removed, freeing up space for the magnets, reducing the difficulty and / or size of arranging other devices, and improving the performance of the foldable electronic device 100. In addition, by removing the magnets in the prior art, the miniaturization and lightweight development of the foldable electronic device 100 can be achieved.

[0053] The foldable electronic device 100 may include, but is not limited to, a foldable mobile phone, a foldable tablet computer, a foldable e-reader, or other devices with a foldable screen. In the embodiments of the present application, the foldable electronic device 100 is described as a foldable mobile phone.

[0054] The following describes an implementation of the foldable electronic device 100 provided in an embodiment of the present application.

[0055] Figure 2 A schematic diagram of the structure of a foldable electronic device provided in an embodiment of the present application is shown. Figure 3 for Figure 2 Schematic diagram of the cross section at AA in the middle, Figure 4 for Figure 2 A schematic structural diagram of a cover assembly in a foldable electronic device is shown.

[0056] See also Figure 2 As shown, the foldable electronic device 100 of the embodiment of the present application includes a flexible screen 10, a middle frame assembly 20 and a cover assembly 30. The flexible screen 10 is used to display images. The middle frame assembly 20 is arranged on the non-display side of the flexible screen 10 and is used to carry the flexible screen 10 and the cover assembly 30. Of course, the middle frame assembly 20 can also be used to carry other parts that make the electronic device functionally complete, such as processors, batteries, camera modules, etc. The edge of the flexible screen 10 is not aligned with the edge of the middle frame assembly 20. In other words, there may be a gap between the side wall of the flexible screen 10 and the side wall of the middle frame assembly 20 along the direction perpendicular to the thickness direction of the flexible screen 10. The cover assembly 30 is connected to the middle frame assembly 20 and covers the gap between the middle frame assembly 20 and the flexible screen 10. While improving the aesthetics of the foldable electronic device 100, it can also protect the edge of the flexible screen 10. Specifically, a portion of the covering assembly 30 is arranged on the display side of the flexible screen 10 and is adhered to the flexible screen 10, and another portion of the covering assembly 30 is arranged side by side with the flexible screen 10 in a direction perpendicular to the thickness direction of the flexible screen 10. In this way, the covering assembly 30 can cover the edge of the flexible screen 10 and cover the gap between the middle frame assembly 20 and the flexible screen 10.

[0057] See also Figure 2 As shown, the middle frame assembly 20 may include two middle frames 21, which are arranged on the same side of the flexible screen 10. Along the thickness direction of the flexible screen 10, the projection of each middle frame 21 partially overlaps with the projection of the flexible screen 10. There is a gap between each middle frame 21 and the flexible screen 10, which can be understood as the gap formed by the side wall of the flexible screen 10 and the middle frame 21. In other words, Figure 2As shown, the area of ​​the overlapping portion between the flexible screen 10 and each middle frame 21 is smaller than the area of ​​the middle frame 21, so that part of the middle frame 21 is not covered by the flexible screen 10, thereby forming a gap.

[0058] See also Figure 2 and Figure 4 As shown, the cover assembly 30 may include two cover members 31, each cover member 31 may correspond to a middle frame 21, and each cover member 31 is connected to the corresponding middle frame 21. At least a portion of each cover member 31 is disposed on the display side of the flexible screen 10 (such as Figure 3 As shown), each cover 31 can be at least partially disposed in the gap between the corresponding middle frame 21 and the flexible screen 10. For example, at least a portion of each cover 31 is disposed along the thickness direction of the flexible screen 10 (as shown). Figure 3 In the X direction) and arranged side by side with the flexible screen 10 and located on the display side of the flexible screen 10, at least a portion of each covering member 31 is arranged along a direction perpendicular to the thickness direction of the flexible screen 10 (such as Figure 3 The cover 31 is arranged side by side with the flexible screen 10 (in the middle Y direction) and close to the edge of the flexible screen 10. In this way, the cover 31 can press the edge of the flexible screen 10 while covering the gap between the flexible screen 10 and the middle frame 21, improving the aesthetics of the foldable electronic device 100 while protecting the edge of the flexible screen 10. At least a portion of each cover 31 is magnetic, so that the two cover members 31 generate a mutual attraction force, thereby generating the opening and closing force of the foldable electronic device 100, thereby meeting the opening and closing requirements.

[0059] In the embodiment of the present application, both covering members 31 are magnetic, and the magnetism of a portion of one covering member 31 is opposite to the magnetism of a portion of the other covering member 31, so that a mutual attraction force is generated between the two covering members 31, so that the foldable electronic device 100 generates an opening and closing force, thereby meeting the requirements of the opening and closing experience.

[0060] Because the covering member 31 is an existing part of the foldable electronic device 100, it can generate the opening and closing force without adding new parts or taking up too much space in the foldable electronic device 100. The magnets used to generate the opening and closing force in the prior art can be removed, which can free up space for arranging the magnets in the prior art, thereby removing the constraints on the arrangement and / or size of other devices, and further improving the performance of the foldable electronic device 100.

[0061] Furthermore, by removing the magnets used in the prior art, the thickness constraint imposed by the magnets on the foldable electronic device 100 can be eliminated, allowing the foldable electronic device 100 to be made smaller, thinner, and lighter. Furthermore, at least a portion of the cover 31 can be made of a magnetic material, providing magnetic properties without modifying the structure of the cover 31, thereby reducing the design cost of the cover 31.

[0062] In some implementations, the name of the cover 31 can also be other names, such as plastic frame or small A shell, etc., and this application does not impose specific restrictions on this.

[0063] In some implementations, the two covering members 31 may have the same structure. In other implementations, the two covering members 31 may have different structures. In this way, whether the structures of the two covering members 31 are the same or different does not affect the purpose of the covering members 31 in covering the gap between the middle frame 21 and the flexible screen 10.

[0064] For example, Figure 4 As shown, the shape of the cover 31 is U-shaped, and the cover 31 is arranged around the flexible screen 10. Specifically, as Figure 4 As shown, the covering member 31 may include a first covering segment 312 , a second covering segment 313 and a third covering segment 314 connected in sequence, and the first covering segment 312 and the third covering segment 314 are respectively arranged on opposite sides of the flexible screen 10 .

[0065] In some possible implementations, the cover 31 is an integrally formed magnetic plastic part. Thus, it can be seen that the cover 31 is integrally formed of magnetic plastic, so that the entire cover 31 is magnetic, and can obtain the target magnetic force to meet the opening and closing force requirements.

[0066] The two covering members 31 are both made of magnetic plastic and can be integrally formed by injection molding, so that the structures of the covering members 31 meet the requirements and can obtain the target magnetic force.

[0067] The target magnetic force refers to the target magnetic force that the cover 31 can generate. For example, the target magnetic force can be 1N to 10N. Of course, the target magnetic force can also exceed 10N.

[0068] In some possible implementations, the magnetic plastic part includes a plastic base material and a magnetic filler. By blending the plastic base material and the magnetic filler and then injection molding them, not only can the injection molding characteristics of the plastic be realized to obtain a designed special-shaped structure, but also magnetic force can be obtained to meet the target opening and closing force requirements.

[0069] The plastic substrate may include but is not limited to polycarbonate (PC), polyamide (PA), polyphenylene sulfide (PPS), and the like.

[0070] The magnetic filler may include, but is not limited to, ferrite, neodymium iron boron, samarium iron nitride, and the like.

[0071] The content of the magnetic filler can be greater than or equal to 20 vol%, so that the magnetic force generated by the magnetic plastic part meets the requirements and the force between the two covering parts 31 meets the adsorption requirements.

[0072] In some possible implementations, the magnetic filler content can be less than or equal to 50 vol%. Thus, while ensuring the required interaction force between the two covering members 31 is met, increasing the plastic base material content can improve the mechanical properties of the covering members 31. Therefore, when the magnetic filler content is between 20 vol% and 50 vol%, the mechanical properties and magnetic force of the magnetic plastic member can be effectively balanced.

[0073] In some possible implementations, the magnetic plastic part may further include a reinforcing filler. The reinforcing plastic, the magnetic filler, and the plastic base material are blended and injection molded to obtain the magnetic plastic part. In this way, the addition of the reinforcing filler can further improve the plastic mechanical properties of the magnetic plastic part.

[0074] The reinforcing filler can be short fibers such as glass fiber and carbon fiber, or an inorganic filler. Of course, the reinforcing filler can also be other materials.

[0075] For example, by adding reinforcing fillers, the mechanical properties of the magnetic plastic part can be: tensile strength 30-110 MPa, elongation at break 2-7%, flexural modulus 2-10 GPa, and impact strength 10-30 KJ / m2. Of course, the mechanical properties of the magnetic plastic part can also be other values.

[0076] It should be noted that by controlling the type and content of the plastic base material, the type and content of the magnetic filler, and the type and content of the reinforcing filler, the mechanical strength and magnetic force of the magnetic plastic part can be adjusted to meet the use requirements.

[0077] Figure 5 A schematic diagram of a magnetic pole structure of a cover provided in an embodiment of the present application. Figure 5 The magnetic poles used to illustrate the cover do not limit the structure of the cover.

[0078] In some possible implementations, see Figure 5 As shown, the cover 31 includes a plurality of sequentially connected first magnetic segments 311, with the magnetic properties of two adjacent first magnetic segments 311 being opposite. This configuration imparts anisotropy to the cover 31, thereby achieving a greater magnetic force at the same magnetic filler content, thereby increasing the interaction force between the two cover members 31.

[0079] There can be two covering members 31, each of which is composed of a plurality of first magnetic segments 311, and the two covering members 31 have the same number of magnetic poles. For example, each covering member 31 is composed of four first magnetic segments 311, so that each covering member 31 has four magnetic poles, and thus the magnetization polarity of the covering member 31 is 4-pole. Of course, the magnetization polarity of the covering member 31 can also be 2-pole, 6-pole, 8-pole, 10-pole, 12-pole, etc.

[0080] Magnetic materials are classified as either isotropic or anisotropic. Anisotropic magnetic materials have a higher magnetic energy product, resulting in a greater magnetic force at the same magnetic filler content. Therefore, during the magnetization process of the cover 31, the design of the magnetic poles can produce an anisotropic cover 31.

[0081] Among them, a pair of magnetic poles can be built into the injection molding machine to perform permanent magnetic field orientation, or a coil can be used for electromagnetic field orientation. Of course, the cover 31 can also be magnetized in other ways.

[0082] In summary, in addition to adjusting the magnetic force of magnetic plastic parts by controlling the type and content of magnetic fillers, the magnetic force of magnetic plastic parts can also be adjusted by optimizing the anisotropic magnetic pole orientation of the magnetic plastic parts. For example, the target magnetic force is 1 to 10N.

[0083] In some possible implementations, the magnetization polarity of the cover 31 can also be unipolar, and the magnetism of the two cover members 31 is opposite. In this way, the two cover members 31 can generate a mutual attraction force, so that the foldable electronic device 100 generates an opening and closing force.

[0084] In the above description, the entire cover 31 is integrally molded from magnetic plastic. However, the cover 31 may also be partially made of magnetic plastic and partially made of non-magnetic plastic. In other words, the cover 31 may be magnetic as a whole or partially magnetic and non-magnetic.

[0085] Figure 6 This is a schematic diagram of the three-dimensional structure of another covering assembly provided in an embodiment of the present application. Figure 7 for Figure 6 The schematic diagram of the three-dimensional structure of the cover member in the cover assembly shown is as follows, Figure 8 for Figure 7 The exploded view of the cover shown, Figure 9 for Figure 8 A local enlarged schematic diagram of point A in the middle.

[0086] Combine Figures 6 to 9 It can be seen that Figure 6 and Figure 4The difference is that a part of the cover 31 is made of magnetic plastic and the other part is made of non-magnetic plastic, so that a part of the cover 31 is magnetic and the other part is non-magnetic.

[0087] Specifically, combined Figures 7 to 9 As can be seen, the cover 31 includes a plastic body 32 and an integrally molded magnetic plastic body 33, which can be connected to the plastic body 32. The magnetic plastic body 33 is magnetic and can generate a magnetic force, which creates a mutual attraction between the two cover members 31 and creates an opening and closing force. The plastic body 32 is non-magnetic and has high mechanical properties, which can improve the mechanical properties of the cover 31. Therefore, the cover 31 composed of the plastic body 32 and the magnetic plastic body 33 can provide magnetic force while also meeting the required mechanical strength.

[0088] The number of the magnetic plastic body 33 can be one or more. Figure 8 As shown, the number of the magnetic plastic bodies 33 is six, and the six magnetic plastic bodies 33 are arranged at intervals along the extending direction of the plastic body 32 .

[0089] The number of magnetic plastic bodies 33 in the two covering members 31 is the same, with each covering member 31 including six magnetic plastic bodies 33. Furthermore, the magnetic plastic bodies 33 on the two covering members 31 are symmetrically arranged. This arrangement allows the two symmetrically arranged magnetic plastic bodies 33 to generate a mutual attraction force.

[0090] Figure 10 A schematic cross-sectional view of another foldable electronic device provided in an embodiment of the present application.

[0091] In some possible implementations, see Figure 10 As shown, the plastic body 32 can be at least partially disposed in the gap between the middle frame 21 and the flexible screen 10, and the plastic body 32 can be at least partially disposed on the display side of the flexible screen 10. Figure 10 In the middle X direction), the magnetic plastic body 33 can be arranged on the side of the plastic body 32 facing the middle frame 21, and the projection of the plastic body 32 in the thickness direction of the flexible screen 10 can at least partially overlap with the magnetic plastic body 33.

[0092] Thus, magnetic plastic body 33 is positioned on the side of plastic body 32 facing middle frame 21, making it an internal component rather than a surface for external appearance. This reduces strength and coating reliability risks. Furthermore, plastic body 32 is made of plastic and serves as an external surface, ensuring both mechanical strength and appearance requirements.

[0093] Coating reliability refers to the risk of the coating peeling off after being applied to the surface of the cover 31. Because the magnetic plastic contains magnetic fillers, the adhesion between the magnetic plastic body 33 and the coating is weak, making it easy for the magnetic plastic body 33 to separate from the coating. Furthermore, strength risk refers to the risk that the cover 31's strength may be too low, potentially leading to damage.

[0094] In some implementations, the magnetic plastic body 33 may be disposed between the plastic body 32 and the middle frame 21 along the thickness direction of the flexible screen 10. In other implementations, the middle frame 21 may be provided with a receiving portion, and at least a portion of the magnetic plastic body 33 may be disposed between the plastic body 32 and the middle frame 21. At least a portion of the magnetic plastic body 33 may be disposed inside the receiving portion and connected to the middle frame 21.

[0095] When there are multiple magnetic plastic bodies 33, all magnetic plastic bodies 33 can be arranged between the plastic body 32 and the middle frame 21. Alternatively, at least part of the magnetic plastic body 33 can be arranged between the plastic body 32 and the middle frame 21, and at least part of the magnetic plastic body 33 can be arranged inside the accommodating portion and connected to the middle frame 21. Alternatively, part of each magnetic plastic body 33 can be arranged between the plastic body 32 and the middle frame 21, and the other part can be arranged inside the accommodating portion and connected to the middle frame 21.

[0096] When there are multiple magnetic plastic bodies 33, the structures of all the magnetic plastic bodies 33 may be the same, or the structures of all the magnetic plastic bodies 33 may be different (e.g. Figure 8 Alternatively, the structures of a portion of all the magnetic plastic bodies 33 may be the same, and the structures of another portion may be different.

[0097] In some possible implementations, the magnetic plastic body 33 includes a plastic base material and a magnetic filler. By blending the plastic base material and the magnetic filler and then injection molding them, not only can the injection molding characteristics of the plastic be realized to obtain a designed special-shaped structure, but also magnetic force can be obtained to meet the target opening and closing force requirements.

[0098] The plastic substrate may include but is not limited to polycarbonate (PC), polyamide (PA), polyphenylene sulfide (PPS), and the like.

[0099] The magnetic filler may include, but is not limited to, ferrite, neodymium iron boron, samarium iron nitride, and the like.

[0100] The content of the magnetic filler is greater than or equal to 20 vol%, so that the magnetic force generated by the magnetic plastic body 33 meets the requirements and the force between the two covering members 31 meets the adsorption requirements.

[0101] In some possible implementations, the magnetic filler content can be less than or equal to 50 vol%. Thus, while ensuring the required interaction force between the two covering members 31 is met, increasing the plastic base material content can improve the mechanical properties of the magnetic plastic body 33. Therefore, when the magnetic filler content is between 20 vol% and 50 vol%, the mechanical properties and magnetic force of the magnetic plastic body 33 are effectively balanced.

[0102] In some possible implementations, the magnetic plastic body 33 further includes a reinforcing filler, and the reinforcing plastic, the magnetic filler, and the plastic base material are blended and injection molded to obtain the magnetic plastic body 33. In this way, by adding the reinforcing filler, the plastic mechanical properties of the magnetic plastic body 33 can be further improved.

[0103] The reinforcing filler can be short fibers such as glass fiber and carbon fiber, or an inorganic filler. Of course, the reinforcing filler can also be other materials.

[0104] For example, by adding reinforcing fillers, the mechanical properties of the magnetic plastic body 33 can be: tensile strength 30-110 MPa, elongation at break 2-7%, flexural modulus 2-10 GPa, and impact strength 10-30 KJ / m2. Of course, the mechanical properties of the magnetic plastic body 33 can also be other values.

[0105] It should be noted that by controlling the type and content of the plastic base material, the type and content of the magnetic filler, and the type and content of the reinforcing filler, the mechanical strength and magnetic force of the magnetic plastic body 33 can be adjusted to meet usage requirements.

[0106] In some possible implementations, the magnetic plastic body 33 includes a plurality of sequentially connected second magnetic segments 331, with adjacent second magnetic segments 331 having opposite magnetic properties. This configuration imparts anisotropy to the magnetic plastic body 33, thereby achieving a greater magnetic force at the same magnetic filler content, thereby increasing the interaction force between the two covering members 31.

[0107] During the magnetization process of the magnetic plastic body 33, the magnetic pole design can be used to obtain anisotropic magnetic plastic body 33. A pair of magnetic poles can be built into the injection molding machine for permanent magnetic field orientation, or coils can be used for electromagnetic field orientation. Of course, other methods can also be used to magnetize the magnetic plastic body 33.

[0108] The magnetization polarity can be 2-pole, 4-pole, 6-pole, 8-pole, 10-pole, 12-pole, etc. For example, Figure 11 As shown, the magnetic plastic body 33 has four second magnetic segments 331 connected in sequence, so that the magnetization polarity of the magnetic plastic body 33 is 4-pole. Figure 11A schematic diagram of the magnetic pole structure of a magnetic plastic body provided in an embodiment of the present application.

[0109] It should be noted that when each cover member 31 includes multiple magnetic plastic bodies 33, the number of anisotropic magnetic plastic bodies 33 can be one. Furthermore, the magnetic plastic bodies 33 at symmetrical positions on the two cover members 31 have the same magnetization polarity, ensuring that the two symmetrical magnetic plastic bodies 33 generate a mutual attraction force.

[0110] In summary, in addition to adjusting the magnetic force of the magnetic plastic body 33 by controlling the type and content of the magnetic filler, the magnetic force of the magnetic plastic body 33 can also be adjusted by optimizing the anisotropic magnetic pole orientation of the magnetic plastic body 33 , for example, the target magnetic force is 1-10N.

[0111] In some possible implementations, the magnetization polarity of the magnetic plastic body 33 can also be unipolar, and the two magnetic plastic bodies 33 symmetrically arranged on the two covering members 31 have opposite magnetic properties. In this arrangement, the two covering members 31 can generate a mutual attraction force, which enables the foldable electronic device 100 to generate an opening and closing force.

[0112] It should be noted that when there are multiple magnetic plastic bodies 33, all magnetic plastic bodies 33 can have multiple magnetic poles, or some magnetic plastic bodies 33 can have multiple magnetic poles and other magnetic plastic bodies 33 can have a single pole, or all magnetic plastic bodies 33 can have a single pole.

[0113] The magnetic plastic body 33 can be connected to the plastic body 32 by bonding, mechanical bonding, double-color injection molding, etc. The mechanical bonding may include, but is not limited to, snap-fitting, threaded connection, etc. The magnetic plastic body 33 and the plastic body 32 can be formed into an integral structure by double-color injection molding.

[0114] In some possible implementations, the magnetic plastic body 33 may be connected to the plastic body 32 by snapping.

[0115] The specific structure of the connection between the magnetic plastic body 33 and the plastic body 32 is not specifically limited here.

[0116] For example, see Figure 9 As shown, the plastic body 32 is provided with a card slot 321 , and the magnetic plastic body 33 is arranged inside the card slot 321 , so that the plastic body 32 and the magnetic plastic body 33 are card-engaged in the thickness direction of the flexible screen 10 .

[0117] In this way, the plastic body 32 and the magnetic plastic body 33 will not be accidentally separated in the thickness direction of the flexible screen 10, ensuring that the plastic body 32 and the magnetic plastic body 33 are firmly connected. In addition, the magnetic plastic body 33 can be perpendicular to the thickness direction of the flexible screen 10 (such as Figure 9 The magnetic plastic body 33 is snapped into the card slot 321 in the direction indicated by the dotted arrow in FIG. 3 , so that the magnetic plastic body 33 is snapped into the plastic body 32, and the connection is simple.

[0118] In the above description, both covering members 31 are magnetic plastic members or are composed of a plastic body 32 and a magnetic plastic body 33. However, in some implementations, one of the two covering members 31 may be a magnetic plastic member, and the other may be composed of a plastic body 32 and a magnetic plastic body 33. This can also create a mutual attractive force between the two covering members 31, ensuring that the foldable electronic device 100 generates an opening and closing force, meeting the opening and closing requirements.

[0119] In the embodiment of the present application, the flexible screen 10 may include but is not limited to an organic light emitting diode (OLED) display screen, an active-matrix organic light emitting diode or an active-matrix organic light emitting diode (AMOLED) display screen, a mini organic light emitting diode (miniorganic light emitting diode) display screen, a micro organic light emitting diode (micro organic light emitting diode) display screen, a micro organic light emitting diode (micro organic light emitting diode) display screen, or a quantum dot light emitting diode (QLED) display screen.

[0120] In some implementations, the flexible screen 10 may include a flexible cover and a display panel. The display panel is disposed between the flexible cover and the middle frame assembly 20. The flexible cover is laminated and bonded to the display panel. The flexible cover is used to protect the display panel and provide tactile and force feedback to the user when the user touches it. The display panel is provided with a plurality of pixel units to enable image display. The flexible cover includes portions distributed in the first non-bending area, the bending area, and the second non-bending area. The display panel also includes portions distributed in the first non-bending area, the bending area, and the second non-bending area.

[0121] The perimeter of the flexible cover (e.g., the edges on all four sides) may extend beyond the boundaries of the display panel. This means that each boundary of the display panel may be retracted within the corresponding boundary of the flexible cover, resulting in an area of ​​the display panel smaller than that of the flexible cover. The center of the flexible cover may substantially coincide with the center of the display panel (the flexible cover and display panel are both substantially centrosymmetrical structures). This means that the distances from each boundary of the flexible cover to the corresponding boundary of the display panel may be substantially uniform.

[0122] See also Figure 2 As shown, the foldable electronic device 100 may further include a hinge mechanism 40 , and the two middle frames 21 are rotatably connected by the hinge mechanism 40 , so that the two middle frames 21 can move closer to or farther away from each other, allowing the flexible screen 10 to unfold or fold.

[0123] Of course, the foldable electronic device 100 may also include other components to complete the functions of the foldable electronic device 100.

[0124] In the description of the embodiments of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to a fixed connection, an indirect connection via an intermediate medium, internal communication between two components, or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on specific circumstances.

[0125] In the embodiments of the present application, any device or element referred to or implied must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "plurality" is two or more, unless otherwise specifically specified.

[0126] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0127] The term "plurality" in this document refers to two or more. The term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A alone, A and B together, or B alone. Furthermore, the character " / " in this document generally indicates an "or" relationship between the related objects; in a formula, the character " / " indicates a "division" relationship between the related objects.

[0128] It will be understood that the various numerical numbers involved in the embodiments of the present application are merely distinctions for the convenience of description and are not intended to limit the scope of the embodiments of the present application.

[0129] It can be understood that in the embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Claims

1. A foldable electronic device, characterized in that: Including flexible screen, middle frame assembly and cover assembly; The middle frame assembly includes two middle frames, which are arranged on the same side of the flexible screen. Along the thickness direction of the flexible screen, the projection of each middle frame partially overlaps with the projection of the flexible screen; The covering assembly includes two covering members, each covering member corresponds to one of the middle frames, each covering member is connected to the corresponding middle frame, at least a portion of each covering member is arranged on the display side of the flexible screen, and at least a portion of each covering member is arranged in the gap between the corresponding middle frame and the flexible screen. At least a portion of each covering member is magnetic, so that a mutual attraction force is generated between the two covering members.

2. The foldable electronic device according to claim 1, wherein: The covering piece is an integrally formed magnetic plastic piece.

3. The foldable electronic device according to claim 2, wherein: The covering member includes a plurality of first magnetic segments connected in sequence, and the magnetic properties of two adjacent first magnetic segments are opposite.

4. The foldable electronic device according to claim 2 or 3, characterized in that: The magnetic plastic part includes a plastic base material and a magnetic filler, and the content of the magnetic filler is greater than or equal to 20 vol%.

5. The foldable electronic device according to claim 4, wherein: The content of the magnetic filler is less than or equal to 50 vol%.

6. The foldable electronic device according to claim 4 or 5, characterized in that: The magnetic plastic part further includes a reinforcing filler, which is glass fiber or carbon fiber.

7. The foldable electronic device according to claim 1, wherein: The covering member comprises a plastic body and an integrally formed magnetic plastic body, wherein the magnetic plastic body is connected to the plastic body.

8. The foldable electronic device according to claim 7, wherein: At least a portion of the plastic body is disposed in a gap between the middle frame and the flexible screen, and at least a portion of the plastic body is disposed on a display side of the flexible screen; Along the thickness direction of the flexible screen, the magnetic plastic body is arranged on the side of the plastic body facing the middle frame, and the projection of the plastic body in the thickness direction of the flexible screen at least partially overlaps with the magnetic plastic body.

9. The foldable electronic device according to claim 8, wherein: The magnetic plastic body includes a plurality of second magnetic segments connected in sequence, and the magnetic properties of two adjacent second magnetic segments are opposite.

10. The foldable electronic device according to any one of claims 7 to 9, characterized in that: The magnetic plastic body includes a plastic base material and a magnetic filler, and the content of the magnetic filler is greater than or equal to 20 vol%.

11. The foldable electronic device according to claim 10, wherein: The content of the magnetic filler is less than or equal to 50 vol%.

12. The foldable electronic device according to claim 10 or 11, characterized in that: The magnetic plastic body further comprises a reinforcing filler, which is glass fiber or carbon fiber.

13. The foldable electronic device according to any one of claims 8 to 12, characterized in that: The plastic body is provided with a card slot, and the magnetic plastic body is arranged inside the card slot, so that the plastic body and the magnetic plastic body are card-engaged in the thickness direction of the flexible screen.

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