Foldable electronic device

Abstract

Embodiments of the present application belong to the technical field of electronic devices, and provide a foldable electronic device. The foldable electronic device comprises a flexible screen, a middle frame assembly, and a cover assembly. The middle frame assembly comprises two middle frames, the two middle frames are disposed on a same side of the flexible screen, and the projection of each middle frame partly overlaps the projection of the flexible screen in the thickness direction of the flexible screen. The cover assembly comprises two cover parts, each cover part corresponds to one middle frame, each cover part is connected to a corresponding middle frame, and a portion of each cover part is disposed on a display side of the flexible screen. Each cover part covers a gap between a corresponding middle frame and the flexible screen, and at least a portion of each cover part is magnetic, so that a mutual attraction acting force is generated between the two cover parts. By means of such arrangement, a magnet space can be released by removing magnets mounted on the middle frames, so that the foldable electronic device can be miniaturized, lightened, and thinned, and the arrangement and size constraints of other devices can be relieved.

Description

Foldable electronic device

[0001] This application claims priority from the Chinese patent application No. 202410445326.9 filed on April 12, 2024, and entitled "Foldable electronic device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] Embodiments of the present application relate to the technical field of electronic devices, in particular to a foldable electronic device. BACKGROUND

[0003] At present, the foldable electronic device includes a first body, a second body, a rotating shaft mechanism and a flexible screen. The first body is connected with the second body through the rotating shaft mechanism, and the first body and the second body are respectively connected with the flexible screen. In order to meet the needs of opening and closing experience, each of the first body and the second body includes a middle frame and a magnet, and 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, which restricts the arrangement and / or size of other devices inside the foldable electronic device. In addition, it also limits the miniaturization and thinness of the foldable electronic device. SUMMARY

[0004] Embodiments of the present application provide a foldable electronic device. By removing the magnet installed on the middle frame, the magnet space can be released, so that the foldable electronic device can be miniaturized and thinned, and the arrangement and size of other devices are also released.

[0005] The first aspect of the present application provides a foldable electronic device, which includes a flexible screen, a middle frame assembly and a cover assembly. The middle frame assembly includes two middle frames, which are arranged on the same side of the flexible screen and partially overlap the projection of the flexible screen in the thickness direction of the flexible screen. The cover assembly includes two cover pieces, each cover piece corresponding to one middle frame, each cover piece being connected to the corresponding middle frame, at least part of each cover piece being arranged on the display side of the flexible screen, at least part of each cover piece being arranged in the gap between the corresponding middle frame and the flexible screen, and at least part of each cover piece having magnetism, so that the two cover pieces generate an attractive force.

[0006] The foldable electronic device provided by the embodiments of the present application adopts cover pieces with magnetism, the magnetism of part of one cover piece is opposite to the magnetism of part of another cover piece, so that the two cover pieces generate an attractive force, thereby making the foldable electronic device generate an opening and closing force, and further meeting the needs of opening and closing experience.

[0007] The cover is an existing part of the foldable electronic device. The cover does not increase the number of parts or occupy too much space of the foldable electronic device based on the opening and closing force. The cover can release the space for arranging the magnet in the prior art, thereby releasing 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 magnet in the prior art, the magnet can also release the constraint on the thickness of the foldable electronic device, so that the foldable electronic device can be miniaturized and thinned. In addition, at least part of the cover can be made of a material with magnetism, so that the cover has magnetism without changing the structure of the cover, and the design cost of the cover can be reduced.

[0008] In a possible implementation, the cover is a one-piece magnetic plastic part.

[0009] In this way, the cover is made of plastic with magnetism and is integrally formed by injection molding, so that the entire cover has magnetism and can obtain the target magnetic force to meet the opening and closing force requirement.

[0010] In a possible implementation, the cover includes a plurality of first magnetic segments connected in sequence, and adjacent two first magnetic segments have opposite magnetism.

[0011] In this way, the cover has anisotropy, so that a greater magnetic force can be obtained under the same content of magnetic filler, and the attractive force between the two covers is greater.

[0012] 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%.

[0013] In this way, the magnetic force generated by the magnetic plastic part meets the requirement, and the attractive force between the two covers meets the adsorption requirement. At the same time, the mechanical properties of the magnetic plastic part also meet the requirement. Therefore, by controlling the content of the magnetic filler, the mechanical properties and the magnetic force of the magnetic plastic part can be effectively balanced.

[0014] In a possible implementation, the content of the magnetic filler is less than or equal to 50 vol%.

[0015] In this way, the content of the magnetic filler can be prevented from being too high, which can cause the mechanical properties of the magnetic plastic part to be too low, and the strength of the magnetic plastic part to be too low.

[0016] In a possible implementation, the magnetic plastic part further includes a reinforcing filler, and the reinforcing filler is glass fiber or carbon fiber.

[0017] In this way, by adding the reinforcing filler, the plastic mechanical properties of the magnetic plastic part can be further improved.

[0018] 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.

[0019] In this way, the cover can provide magnetic force while also meeting the mechanical strength requirements.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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%.

[0025] 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.

[0026] In one possible embodiment, the content of the magnetic filler is less than or equal to 50 vol%.

[0027] 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.

[0028] In a possible implementation, the magnetic plastic body further includes a reinforcing filler, and the reinforcing filler is glass fiber or carbon fiber.

[0029] In this way, by adding reinforcing fillers, the plastic mechanical properties of the magnetic plastic body can be further improved.

[0030] In a possible implementation, the plastic body is provided with a clamping groove, and the magnetic plastic body is arranged inside the clamping groove, so that the plastic body and the magnetic plastic body are clamped in the thickness direction of the flexible screen.

[0031] In this way, the plastic body and the magnetic plastic body cannot be accidentally separated in the thickness direction of the flexible screen, and the connection between the plastic body and the magnetic plastic body is ensured to be firm. In addition, the magnetic plastic body can be clamped into the clamping groove in a direction perpendicular to the thickness direction of the flexible screen, so that the magnetic plastic body is clamped with the plastic body, and the connection is simple. BRIEF DESCRIPTION OF DRAWINGS

[0032] FIG. 1 is a structural schematic diagram of a foldable electronic device in the related art;

[0033] FIG. 2 is a structural schematic diagram of a foldable electronic device provided in an embodiment of the present application;

[0034] FIG. 3 is a sectional schematic diagram of A-A in FIG. 2;

[0035] FIG. 4 is a structural schematic diagram of a cover assembly in the foldable electronic device shown in FIG. 2;

[0036] FIG. 5 is a magnetic pole structure schematic diagram of a cover provided in an embodiment of the present application;

[0037] FIG. 6 is a three-dimensional structural schematic diagram of another cover assembly provided in an embodiment of the present application;

[0038] FIG. 7 is a three-dimensional structural schematic diagram of a cover in the cover assembly shown in FIG. 6;

[0039] FIG. 8 is an exploded schematic diagram of the cover shown in FIG. 7;

[0040] FIG. 9 is a partial enlarged schematic diagram of A in FIG. 8;

[0041] FIG. 10 is a sectional schematic diagram of another foldable electronic device provided in an embodiment of the present application;

[0042] FIG. 11 is a magnetic pole structure schematic diagram of a magnetic plastic body provided in an embodiment of the present application.

[0043] Legend: 100, foldable electronic device; 10, flexible screen; 20, middle frame assembly; 21, middle frame; 30, cover assembly; 31, cover; 311, first magnetic segment; 312, first cover segment; 313, second cover segment; 314, third cover segment; 32, plastic body; 321, clamping groove; 33, magnetic plastic body; 331, second magnetic segment; 40, rotating shaft mechanism. DETAILED DESCRIPTION

[0044] FIG. 1 is a structural schematic diagram of a foldable electronic device in the related art. In the related art, referring to FIG. 1, the foldable electronic device includes two middle frames 110, a rotating shaft mechanism 120, a flexible screen 140, and a plurality of magnets 130. The flexible screen 140 and the magnets 130 are disposed 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 by the rotating shaft mechanism 120, so that the foldable electronic device has a folded state and an unfolded state. Three magnets 130 are disposed 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, so as to generate an opening and closing force to meet the opening and closing requirement.

[0045] However, the magnets 130 are assembled with the middle frame 110, which occupies a large space and compresses the space for arranging other devices (such as a battery) in the foldable electronic device, which restricts the arrangement and / or size of other devices in the foldable electronic device and affects the performance of the foldable electronic device. In addition, the miniaturization and thinness development of the foldable electronic device are also limited.

[0046] Therefore, embodiments of the present application provide a foldable electronic device 100, at least part of a cover piece 31 is made of magnetic plastic, so that the cover piece 31 generates a magnetic force, and there is an attractive force between the two cover pieces 31, and then there is an opening and closing force in the foldable electronic device 100 to meet the opening and closing requirement. Therefore, by magnetically coupling the cover piece 31, the magnets in the prior art can be removed, the space of the magnets is released, the difficulty and / or size of arranging other devices can be reduced, and the performance of the foldable electronic device 100 can be improved. In addition, by removing the magnets in the prior art, the miniaturization and thinness development of the foldable electronic device 100 can be realized.

[0047] The foldable electronic device 100 can include, but is not limited to, a foldable phone, a foldable tablet computer, a foldable electronic reader, and the like, which has a foldable screen. In embodiments of the present application, the foldable electronic device 100 is taken as a foldable phone for example.

[0048] The implementation of the foldable electronic device 100 provided by embodiments of the present application will be described below.

[0049] FIG. 2 is a structural schematic diagram of a foldable electronic device provided by embodiments of the present application, FIG. 3 is a sectional schematic diagram of A-A in FIG. 2, and FIG. 4 is a structural schematic diagram of a cover assembly in the foldable electronic device shown in FIG. 2.

[0050] Referring to FIG. 2, the foldable electronic device 100 according to an embodiment of the disclosure includes a flexible screen 10, a middle frame assembly 20, and a cover assembly 30. The flexible screen 10 is configured to display an image. The middle frame assembly 20 is disposed at a non-display side of the flexible screen 10 and configured to support the flexible screen 10 and the cover assembly 30. Of course, the middle frame assembly 20 can also be configured to support other components that complete the functions of the electronic device, such as a processor, a battery, a camera module, and the like. The edge of the flexible screen 10 is disposed non-aligned with the edge of the middle frame assembly 20, in other words, along a direction perpendicular to the thickness direction of the flexible screen 10, there can be a gap between the side wall of the flexible screen 10 and the side wall of the middle frame assembly 20. 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, thereby improving the aesthetics of the foldable electronic device 100 and protecting the edge of the flexible screen 10. Specifically, a portion of the cover assembly 30 is disposed at the display side of the flexible screen 10 and adheres to the flexible screen 10, and another portion of the cover assembly 30 is disposed side by side with the flexible screen 10 along a direction perpendicular to the thickness direction of the flexible screen 10, so that the cover 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.

[0051] Referring to FIG. 2, the middle frame assembly 20 can include two middle frames 21, which are disposed at the same side of the flexible screen 10 and partially overlap the projection of the flexible screen 10 along the thickness direction 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 side wall formed by the flexible screen 10 and the middle frame 21. In other words, as shown in FIG. 2, the area of the overlapping part of the flexible screen 10 and each middle frame 21 is less than the area of the middle frame 21, so that the middle frame 21 has a region not covered by the flexible screen 10, thereby forming a gap.

[0052] Referring to FIGS. 2 and 4, the covering assembly 30 can include two coverings 31, each of which can correspond to a middle frame 21, and each of which is connected to the corresponding middle frame 21. At least part of each covering 31 is arranged on the display side of the flexible screen 10 (as shown in FIG. 3), and at least part of each covering 31 can be arranged in the gap between the corresponding middle frame 21 and the flexible screen 10, for example, at least part of each covering 31 is arranged side by side with the flexible screen 10 on the display side of the flexible screen 10 along the thickness direction of the flexible screen 10 (as shown by the X direction in FIG. 3), and at least part of each covering 31 is arranged side by side with the flexible screen 10 close to the edge of the flexible screen 10 along the direction perpendicular to the thickness direction of the flexible screen 10 (as shown by the Y direction in FIG. 3). In this way, the covering 31 can press the edge of the flexible screen 10 while covering the gap between the flexible screen 10 and the middle frame 21, thereby improving the appearance of the foldable electronic device 100 while protecting the edge of the flexible screen 10. At least part of each covering 31 has magnetism, so that the two coverings 31 generate an attractive force of action between each other, thereby generating the opening and closing force of the foldable electronic device 100, and further meeting the opening and closing requirement.

[0053] In the embodiments of the present application, both of the two coverings 31 have magnetism, and the magnetism of part of one covering 31 is opposite to the magnetism of part of the other covering 31, so that the two coverings 31 generate an attractive force of action between each other, thereby the foldable electronic device 100 generates the opening and closing force, and further meeting the opening and closing experience requirement.

[0054] Because the covering 31 is an existing part of the foldable electronic device 100, on the basis of generating the opening and closing force, no new part is added or too much space of the foldable electronic device 100 is occupied, the magnet in the prior art for generating the opening and closing force can be removed, the space for arranging the magnet in the prior art can be released, thereby the arrangement and / or size of other devices can be released, and further the performance of the foldable electronic device 100 can be improved.

[0055] In addition, by removing the magnet in the prior art, the constraint of the magnet on the thickness of the foldable electronic device 100 can be released, so that the foldable electronic device 100 can be miniaturized and thinned. In addition, at least part of the covering 31 can be composed of a material with magnetism, so that the covering 31 has magnetism while the structure of the covering 31 does not need to be changed, and the design cost of the covering 31 can be reduced.

[0056] In some implementations, the name of the covering 31 can also be other names, such as plastic frame or small A shell, and the present application does not make specific limitations thereto.

[0057] In some implementations, the two coverings 31 can have the same structure. In other implementations, the two coverings 31 can also have different structures. In this way, the two coverings 31 have the same or different structures, and neither of them affects the purpose of covering the gap between the middle frame 21 and the flexible screen 10 by the covering 31.

[0058] Exemplarily, as shown in FIG. 4, the covering 31 has a U-shaped structure, and the covering 31 is arranged around the flexible screen 10. Specifically, as shown in FIG. 4, the covering 31 can 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 arranged on opposite sides of the flexible screen 10, respectively.

[0059] In some possible implementations, the covering 31 is a magnetic plastic part formed integrally. Therefore, the covering 31 is formed integrally by using magnetic plastic, so that the whole covering 31 has magnetism, and the target magnetic force can be obtained to meet the opening and closing force requirement.

[0060] In some possible implementations, the covering 31 is a magnetic plastic part formed integrally. Therefore, the covering 31 is formed integrally by using magnetic plastic, so that the whole covering 31 has magnetism, and the target magnetic force can be obtained to meet the opening and closing force requirement.

[0061] In some possible implementations, the covering 31 is a magnetic plastic part formed integrally. Therefore, the covering 31 is formed integrally by using magnetic plastic, so that the whole covering 31 has magnetism, and the target magnetic force can be obtained to meet the opening and closing force requirement.

[0062] 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, not only the injection molding characteristics of the plastic can be achieved to obtain a designed special-shaped structure, but also a magnetic force can be obtained to meet the target opening and closing force requirement.

[0063] The plastic base material can include, but is not limited to, polycarbonate (PC), polyamide (PA), polyphenylene sulfide (PPS), etc.

[0064] The magnetic filler can include, but is not limited to, ferrite, neodymium iron boron, samarium iron nitride, etc.

[0065] 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 requirement, and the force between the two coverings 31 meets the adsorption requirement. vol% refers to volume percentage.

[0066] In some possible implementation manners, the content of the magnetic filler can be less than or equal to 50 vol.%. In this way, after ensuring that the force between the two coverings 31 meets the requirements, the content of the plastic base material is increased, and the mechanical properties of the covering 31 can be improved. Therefore, when the content of the magnetic filler is 20 vol.% to 50 vol.%, the mechanical properties and the magnetic force of the magnetic plastic part can be effectively balanced.

[0067] In some possible implementation manners, the magnetic plastic part can further include 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 part. In this way, by adding the reinforcing filler, the plastic mechanical properties of the magnetic plastic part can be further improved.

[0068] The reinforcing filler can be short fibers such as glass fibers and carbon fibers, or the reinforcing filler can also be inorganic fillers. Of course, the reinforcing filler can also be other materials.

[0069] For example, by adding the reinforcing filler, the plastic 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 plastic mechanical properties of the magnetic plastic part can also be other values.

[0070] 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 the magnetic force of the magnetic plastic part can be regulated to meet the use requirements.

[0071] FIG. 5 is a schematic view of a magnetic pole structure of a covering according to an embodiment of the present application. FIG. 5 is used to illustrate the magnetic poles of the covering and does not constitute a limitation on the structure of the covering.

[0072] In some possible implementation manners, referring to FIG. 5, the covering 31 includes a plurality of first magnetic segments 311 connected in sequence, and the magnetic poles of adjacent two first magnetic segments 311 are opposite. In this way, the covering 31 has anisotropy, so that a greater magnetic force can be obtained under the same content of the magnetic filler, and the force between the two coverings 31 is greater.

[0073] The number of the coverings 31 can be two, each covering 31 is formed by a plurality of first magnetic segments 311, and the number of the magnetic poles of the two coverings 31 is the same. For example, each covering 31 is formed by four first magnetic segments 311, so that the number of the magnetic poles of each covering 31 is four, and the magnetization polarity of the covering 31 is 4-pole. Of course, the magnetization polarity of the covering 31 can also be 2-pole, 6-pole, 8-pole, 10-pole, 12-pole, etc.

[0074] Magnetic materials are divided into isotropic and anisotropic, wherein the anisotropic magnetic material has a higher magnetic energy product, and a greater magnetic force can be obtained under the same magnetic filler content. Therefore, in the process of magnetizing the cover 31, the magnetic pole can be designed to obtain the anisotropic cover 31.

[0075] In the above, the magnetic pole pair can be built in the injection molding machine to perform permanent magnetic field orientation, or a coil can be used to perform electromagnetic field orientation. Of course, the cover 31 can also be magnetized by other means.

[0076] In summary, in addition to adjusting the magnetic force of the magnetic plastic part by controlling the type and content of the magnetic filler, the magnetic force of the magnetic plastic part can also be adjusted by optimizing the design of the anisotropic magnetic pole orientation of the magnetic plastic part, for example, the target magnetic force is 1-10N.

[0077] In some possible implementations, the magnetization polarity of the cover 31 can also be monopole, and the magnetism of the two covers 31 is opposite. In this way, the two covers 31 can generate an attractive force between each other, so that the foldable electronic device 100 generates an opening and closing force.

[0078] In the above, the cover 31 is integrally formed by the magnetic plastic, but a part of the cover 31 can also be formed by the magnetic plastic, and the other part can be formed by the plastic without magnetism. In other words, in addition to the whole cover 31 having magnetism, a part of the cover 31 can also have magnetism, and the other part can not have magnetism.

[0079] FIG. 6 is a perspective structural schematic view of another cover assembly provided by an embodiment of the present application, FIG. 7 is a perspective structural schematic view of a cover in the cover assembly shown in FIG. 6, FIG. 8 is an exploded schematic view of the cover shown in FIG. 7, and FIG. 9 is a partial enlarged schematic view of A in FIG. 8.

[0080] As can be seen from FIGS. 6-9, the difference between FIG. 6 and FIG. 4 is that a part of the cover 31 is made of magnetic plastic, and the other part is made of plastic without magnetism, so that a part of the cover 31 has magnetism, and the other part does not have magnetism.

[0081] Specifically, as can be seen from FIGS. 7-9, the cover 31 includes a plastic main body 32 and an integrally formed magnetic plastic body 33, and the magnetic plastic body 33 can be connected with the plastic main body 32. The magnetic plastic body 33 has magnetism and can generate a magnetic force, so that an attractive force between the two covers 31 can be generated, which can constitute an opening and closing force. The plastic main body 32 does not have magnetism, and the mechanical properties of the plastic main body 32 are high, which can improve the mechanical properties of the cover 31. Therefore, the cover 31 composed of the plastic main body 32 and the magnetic plastic body 33 can provide a magnetic force while the mechanical strength can also meet the requirements.

[0082] The number of the magnetic plastic bodies 33 can be one or more. For example, as shown in FIG. 8, the number of the magnetic plastic bodies 33 is six, and the six magnetic plastic bodies 33 are arranged at intervals along the extension direction of the plastic body 32.

[0083] The number of the magnetic plastic bodies 33 in the two coverings 31 is the same, and both the two coverings 31 include six magnetic plastic bodies 33. In addition, the magnetic plastic bodies 33 on the two coverings 31 are symmetrically arranged. In this way, the symmetrically arranged two magnetic plastic bodies 33 can generate an attractive force of action between each other.

[0084] FIG. 10 is a cross-sectional schematic view of another foldable electronic device provided by an embodiment of the present application.

[0085] In some possible implementation manners, referring to FIG. 10, the plastic body 32 can be arranged at least partially in the gap between the middle frame 21 and the flexible screen 10, and the plastic body 32 can be arranged at least partially on the display side of the flexible screen 10. Along the thickness direction of the flexible screen 10 (for example, the X direction in FIG. 10), 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 on the thickness direction of the flexible screen 10 can at least partially overlap the magnetic plastic body 33.

[0086] In this way, the magnetic plastic body 33 is arranged on the side of the plastic body 32 facing the middle frame 21, so that the magnetic plastic body 33 serves as a built-in part and does not need to serve as an appearance surface, which can reduce the strength risk and the coating reliability risk. In addition, the material of the plastic body 32 is plastic and serves as an appearance surface, which can ensure the mechanical strength and appearance requirements.

[0087] The coating reliability refers to the risk of coating falling off after the coating is arranged on the surface of the covering 31. Because the magnetic plastic contains magnetic fillers, the adhesion between the magnetic plastic body 33 and the coating is small, and the magnetic plastic body 33 is easy to separate from the coating. In addition, the strength risk refers to that the strength of the covering 31 is too low to cause damage to the covering 31.

[0088] In some implementation manners, along the thickness direction of the flexible screen 10, the magnetic plastic body 33 can be arranged between the plastic body 32 and the middle frame 21. In other implementation manners, the middle frame 21 can be provided with a receiving portion, 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 receiving portion and connected with the middle frame 21.

[0089] When the number of the magnetic plastic bodies 33 is multiple, all the magnetic plastic bodies 33 can be arranged between the plastic main body 32 and the middle frame 21, or at least part of the magnetic plastic bodies 33 can be arranged between the plastic main body 32 and the middle frame 21, at least part of the magnetic plastic bodies 33 can be arranged inside the accommodating portion and connected with the middle frame 21, or part of each magnetic plastic body 33 can be arranged between the plastic main body 32 and the middle frame 21, and the other part can be arranged inside the accommodating portion and connected with the middle frame 21.

[0090] When the number of the magnetic plastic bodies 33 is multiple, the structures of all the magnetic plastic bodies 33 can be the same, or the structures of all the magnetic plastic bodies 33 can be different (as shown in FIG. 8), or part of the structures of all the magnetic plastic bodies 33 can be the same, and the structures of the other part can be different.

[0091] In some possible implementation manners, the magnetic plastic body 33 includes a plastic base material and a magnetic filler. After the plastic base material and the magnetic filler are blended and injection molded, not only the injection molding characteristics of the plastic can be achieved to obtain a designed special-shaped structure, but also a magnetic force can be obtained to meet a target opening and closing force requirement.

[0092] The plastic base material can include, but is not limited to, polycarbonate (PC), polyamide (PA), polyphenylene sulfide (PPS), etc.

[0093] The magnetic filler can include, but is not limited to, ferrite, neodymium iron boron, samarium iron nitride, etc.

[0094] 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 requirement, and the force between the two cover members 31 meets the adsorption requirement. vol% refers to volume percentage.

[0095] In some possible implementation manners, the content of the magnetic filler can be less than or equal to 50 vol%. In this way, after the force between the two cover members 31 meets the requirement, the content of the plastic base material is increased, and the mechanical properties of the magnetic plastic body 33 can be improved. Therefore, when the content of the magnetic filler is 20 vol%-50 vol%, the mechanical properties and the magnetic force of the magnetic plastic body 33 can be effectively balanced.

[0096] In some possible implementation manners, the magnetic plastic body 33 further includes a reinforcing filler. 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.

[0097] The reinforcing filler can be short fibers such as glass fibers or carbon fibers, or the reinforcing filler can also be inorganic fillers. Of course, the reinforcing filler can also be other materials.

[0098] By adding the reinforcing filler, the mechanical properties of the magnetic plastic body 33 can be tensile strength of 30-110 MPa, elongation at break of 2-7%, flexural modulus of 2-10 GPa, and impact strength of 10-30 KJ / m2. Of course, the mechanical properties of the magnetic plastic body 33 can also be other values.

[0099] 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 the use requirements.

[0100] In some possible implementations, the magnetic plastic body 33 includes a plurality of second magnetic segments 331 connected in sequence, and the magnetic properties of adjacent two second magnetic segments 331 are opposite. In this way, the magnetic plastic body 33 has anisotropy, so that a greater magnetic force can be obtained under the same content of magnetic filler, and thus the acting force between the two coverings 31 is greater.

[0101] In the process of magnetizing the magnetic plastic body 33, the magnetic plastic body 33 with anisotropy can be obtained by designing the magnetic poles. The magnetic poles can be built-in in the injection molding machine to perform permanent magnetic field orientation, or a coil can be used to perform electromagnetic field orientation. Of course, the magnetic plastic body 33 can also be magnetized by other methods.

[0102] The magnetization polarity can be 2-pole, 4-pole, 6-pole, 8-pole, 10-pole, 12-pole, etc. For example, as shown in FIG. 11, 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. FIG. 11 is a schematic view of a magnetic pole structure of a magnetic plastic body provided in an embodiment of the present application.

[0103] It should be noted that when each covering 31 contains a plurality of magnetic plastic bodies 33, the number of the magnetic plastic bodies 33 with anisotropy can be one. In addition, the magnetization polarities of the magnetic plastic bodies 33 at the symmetrical positions on the two coverings 31 are the same, so as to ensure that the two magnetic plastic bodies 33 at the symmetrical positions generate an attractive acting force.

[0104] 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 1-10 N.

[0105] In some possible implementation manners, the magnetization polarity of the magnetic plastic body 33 can also be single-pole, and the magnetic properties of the two magnetic plastic bodies 33 symmetrically arranged on the two cover members 31 are opposite. In this way, the two cover members 31 can generate an attractive force therebetween, so that the foldable electronic device 100 generates an opening and closing force.

[0106] It should be noted that when the number of magnetic plastic bodies 33 is multiple, all the magnetic plastic bodies 33 can have multiple magnetic poles, or a part of the magnetic plastic bodies 33 can have multiple magnetic poles, and the other part of the magnetic plastic bodies 33 can have single-pole, or all the magnetic plastic bodies 33 can have single-pole.

[0107] The magnetic plastic body 33 can be connected to the plastic main body 32 in a manner of bonding, mechanical combination, two-color injection molding, or the like. The mechanical combination can include, but is not limited to, snap connection, threaded connection, or the like. The magnetic plastic body 33 and the plastic main body 32 can be integrated by two-color injection molding.

[0108] In some possible implementation manners, the magnetic plastic body 33 can be connected to the plastic main body 32 in a manner of snap connection.

[0109] The specific structure of the snap connection between the magnetic plastic body 33 and the plastic main body 32 is not specifically limited here.

[0110] For example, referring to FIG. 9, the plastic main body 32 is provided with a clamping groove 321, and the magnetic plastic body 33 is arranged inside the clamping groove 321, so that the plastic main body 32 and the magnetic plastic body 33 are snap connected in the thickness direction of the flexible screen 10.

[0111] In this way, the plastic main body 32 and the magnetic plastic body 33 will not be accidentally separated in the thickness direction of the flexible screen 10, and the connection between the plastic main body 32 and the magnetic plastic body 33 is firm. In addition, the magnetic plastic body 33 can be clamped into the clamping groove 321 in a direction perpendicular to the thickness direction of the flexible screen 10 (for example, the direction indicated by the dashed arrow in FIG. 9), so that the magnetic plastic body 33 is snap connected with the plastic main body 32, and the connection is simple.

[0112] In the above content, both the two cover members 31 are magnetic plastic members or are composed of the plastic main body 32 and the magnetic plastic body 33. However, in some implementation manners, one of the two cover members 31 can also be a magnetic plastic member, and the other can also be composed of the plastic main body 32 and the magnetic plastic body 33, so that the two cover members 31 can generate an attractive force therebetween, and the foldable electronic device 100 generates an opening and closing force to meet the opening and closing requirement.

[0113] In the embodiments of the present application, the flexible screen 10 can include, but is not limited to, an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode display screen, a micro organic light-emitting diode display screen, a micro organic light-emitting diode display screen, or a quantum dot light emitting diode (QLED) display screen.

[0114] In some implementations, the flexible screen 10 can include a flexible cover plate and a display panel, the display panel is arranged between the flexible cover plate and the middle frame assembly 20, the flexible cover plate is laminated with the display panel, the flexible cover plate is used for protecting the display panel, and the flexible cover plate can also provide tactile sensation and force feedback to the user when the user touches. The display panel is provided with a plurality of pixel units and can realize image display. The flexible cover plate includes parts distributed in the first non-bending area, the bending area and the second non-bending area, and the display panel also includes parts distributed in the first non-bending area, the bending area and the second non-bending area.

[0115] The periphery (for example, the edges around the periphery) of the flexible cover plate can exceed the boundary of the display panel, that is, the boundaries of the display panel can be inwardly retracted in the corresponding boundaries of the flexible cover plate, and the area of the display panel is smaller than the area of the flexible cover plate. The center of the flexible cover plate can substantially coincide with the center of the display panel (the flexible cover plate and the display panel are both approximately center-symmetrical structures), that is, the distance from each boundary of the flexible cover plate to the boundary corresponding to the "each boundary" in the display panel can be substantially consistent.

[0116] Referring to FIG. 2, the foldable electronic device 100 can further include a hinge mechanism 40, and the two middle frames 21 are rotationally connected through the hinge mechanism 40, so that the two middle frames 21 can approach or move away from each other, so that the flexible screen 10 is unfolded or folded.

[0117] Of course, the foldable electronic device 100 can also include other components that make the functions of the foldable electronic device 100 complete.

[0118] In the description of the embodiments of the present application, it should be noted that unless specifically defined and limited, the terms "mount", "connect", "connection" should be understood in a broad sense, for example, it can be fixed connection, or indirect connection through an intermediate medium, or internal communication of two elements, or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0119] In the embodiments of the present application or the devices or elements implied by the embodiments of the present application must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0120] The terms "first", "second", "third", "fourth" and the like (if any) in the description of the embodiments of the present application and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0121] The term "a plurality of" herein refers to two or more. The term "and / or" herein is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents that the associated objects before and after it are in an "or" relationship; in the formula, the character " / " represents that the associated objects before and after it are in a "division" relationship.

[0122] It can be understood that the various numbers involved in the embodiments of the present application are only for the convenience of differentiation, and do not limit the scope of the embodiments of the present application.

[0123] It can be understood that in the embodiments of the present application, the size of the serial number of the above processes does not mean the order of execution, and the execution order of the processes should be determined by their functions and inherent 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.

Images