Foldable electronic equipment and heat dissipation assembly thereof

Abstract

The invention provides a foldable electronic device and a heat dissipation assembly thereof, the heat dissipation assembly comprises a first magnetic part and a flexible heat dissipation fin, the first magnetic part is attached to the flexible heat dissipation fin, and the first magnetic part is used for being attracted with a second magnetic part on the electronic device. Therefore, redundancy can be released or absorbed when the flexible cooling fin is folded and flattened along with the electronic equipment. The embodiment of the invention further provides foldable electronic equipment. The foldable electronic equipment comprises a rotating shaft assembly, a rotating shaft decorating part, a flexible display screen and the heat dissipation assembly. According to the heat dissipation assembly, a first magnetic piece is attached to a flexible heat dissipation sheet, and a second magnetic piece is arranged on electronic equipment; when the electronic equipment is unfolded, the two magnetic pieces attract each other, redundancy of the flexible cooling fin is absorbed, the other parts are straightened, and the flexible cooling fin is prevented from abutting against a screen; when the electronic equipment is folded, the two magnetic pieces are released from attraction, the redundancy of the flexible cooling fin is released to compensate for the elongation amount, and creep deformation of the flexible cooling fin is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of the structure of foldable electronic devices, and in particular to a foldable electronic device and its heat dissipation component. Background Art

[0002] At present, the structure of a folding mobile phone generally consists of a flexible screen, a rotating shaft, and a housing. The housing includes a first housing and a second housing, and the first housing and the second housing are rotatably connected through a rotating shaft assembly. For a conventional folding mobile phone, the heat dissipation functions of the two parts of the first housing and the second housing rely on a cross-axis heat dissipation structure to evenly dissipate the heat generated when the mobile phone is working. The fixing scheme of the cross-axis heat dissipation structure is to fix the cross-axis heat dissipation structure on the middle frames of the first housing and the second housing. Since the outermost layer of the flexible screen is stretched when the folding mobile phone is unfolded to the folded state, with the conventional scheme, the cross-axis heat dissipation structure will be affected by the tensile force of the flexible screen. After a long time, creep and elongation will occur, resulting in redundancy of the cross-axis heat dissipation structure after unfolding, and then causing the top screen, resulting in poor crease light and shadow, and even affecting the reliability of the flexible screen. Summary of the Invention

[0003] In a first aspect of an embodiment of the present application, a heat dissipation component for a foldable electronic device is provided. The heat dissipation component includes a first magnetic member and a flexible heat dissipation fin. The first magnetic member is attached to the flexible heat dissipation fin, and the first magnetic member is used to attract and combine with a second magnetic member on the electronic device, so as to release or absorb redundancy during the folding and flattening processes of the flexible heat dissipation fin following the electronic device.

[0004] In a second aspect, an embodiment of the present application provides a foldable electronic device. The foldable electronic device includes a rotating shaft assembly, a rotating shaft decorative member, a flexible display screen, and the heat dissipation component according to any one of the above embodiments;

[0005] The rotating shaft decorative member surrounds the rotating shaft assembly and is fixedly connected to the rotating shaft assembly;

[0006] Both the heat dissipation component and the flexible display screen straddle the rotating shaft assembly and extend to opposite sides of the rotating shaft assembly. The heat dissipation component and the flexible display screen can be folded or unfolded along with the foldable electronic device, and the heat dissipation component is disposed on a side of the flexible display screen facing the rotating shaft assembly;

[0007] The rotating shaft decorative member is provided with a second magnetic member; the second magnetic member can be attracted and combined with the first magnetic member;

[0008] When the foldable electronic device is unfolded, the second magnetic member adsorbs the first magnetic member to move away from the flexible display screen, so that the area of the flexible heat sink attached to the first magnetic member is recessed away from the flexible display screen; when the foldable electronic device is folded, the heat dissipation component is folded accordingly, and the first magnetic member moves away from the second magnetic member and releases the adsorption, so that the recessed area of the flexible heat sink is unfolded.

[0009] The heat dissipation component for a foldable electronic device provided by the embodiments of the present application includes attaching a first magnetic member to the flexible heat sink and arranging a second magnetic member on the electronic device; when the foldable electronic device is unfolded, the two magnetic members are attracted to each other, and the flexible heat sink is pulled by the first magnetic member and recessed away from the flexible display screen, the redundancy of the flexible heat sink is absorbed, and the rest of the flexible heat sink is straightened, avoiding the flexible heat sink from pressing against the screen, and ensuring the display quality and reliability of the flexible display screen; when the foldable electronic device is folded, the two magnetic members are disengaged from each other, and the redundancy of the flexible heat sink is released to compensate for the elongation amount, avoiding the flexible heat sink from being elongated, and further alleviating or even avoiding the creep of the flexible heat sink, playing a protective role for the flexible heat sink and improving the service life of the flexible heat sink. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0011] Figure 1 is a schematic structural diagram of an unfolded state of an embodiment of the foldable electronic device of the present application;

[0012] Figure 2 is Figure 1 a schematic structural diagram of the folded state of the electronic device in the embodiment;

[0013] Figure 3 is Figure 1 a schematic diagram of the partial structure disassembly of the electronic device in;

[0014] Figure 4 is Figure 1 a schematic diagram of the partial structure disassembly of another embodiment of the electronic device in;

[0015] Figure 5 is an embodiment of the heat dissipation component of the present application Figure 4 a schematic diagram of the structure as viewed from the Z - direction looking up;

[0016] Figure 6 is Figure 5Schematic diagram of the structural disassembly of the heat dissipation component in the embodiment;

[0017] Figure 7 is Figure 6 Schematic diagram from another perspective;

[0018] Figure 8 is Figure 1 Partial structural cross-sectional view of the electronic device in the A - A direction;

[0019] Figure 9 is Figure 8 Enlarged schematic diagram of the structure at B in the [embodiment];

[0020] Figure 9a is Figure 9 Enlarged schematic diagram of the structure at C in the [embodiment];

[0021] Figure 10 is Figure 2 Partial structural cross-sectional view of the electronic device in the D - D direction;

[0022] Figure 11 is Figure 10 Enlarged schematic diagram of the structure at E in the [embodiment];

[0023] Figure 11a is Figure 11 Enlarged schematic diagram of the structure at J in the [embodiment];

[0024] Figure 12 is Figure 4 Enlarged schematic diagram of the structure of the rotating shaft decorative part and the second magnetic part at F in the [embodiment];

[0025] Figure 13 is Figure 3 Partial structural cross-sectional view of the assembly of the rotating shaft decorative part and the second magnetic part in the G - G direction;

[0026] Figure 14 is Figure 13 Schematic diagram from another perspective;

[0027] Figure 15 is Figure 3 Enlarged schematic diagram of the structure at H in the [embodiment];

[0028] Figure 16 Schematic diagram of the structure of the screen support plate;

[0029] Figure 17 Structural cross-sectional view of the electronic device in the unfolded state;

[0030] Figure 18 Structural cross-sectional view of the electronic device in the folded state;

[0031] Figure 19 Schematic block diagram of the structural composition of an embodiment of the electronic device of the present application. Detailed implementation manners

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be specifically noted that the following embodiments are only used to illustrate the present invention, but do not limit the scope of the present invention. Similarly, the following embodiments are only partial embodiments of the present invention rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0033] The mention of "embodiment" in this document means that a specific feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present invention. The phrase appears in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0034] As used herein, an "electronic device" (or simply referred to as a "terminal") includes, but is not limited to, a device configured to receive / transmit communication signals via a wired connection (such as via a public switched telephone network (PSTN), digital subscriber line (DSL), digital cable, direct cable connection, and / or another data connection / network) and / or via a wireless interface (such as for a cellular network, wireless local area network (WLAN), digital television network such as DVB-H network, satellite network, AM-FM broadcast transmitter, and / or another communication terminal). A communication terminal configured to communicate via a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal communication system (PCS) terminals that can combine cellular radiotelephone with data processing, facsimile, and data communication capabilities; PDAs that may include radiotelephones, pagers, Internet / intranet access, web browsers, notebooks, calendars, and / or global positioning system (GPS) receivers; and conventional laptop and / or palm receivers or other electronic devices including radiotelephone transceivers. A mobile phone is an electronic device configured with a cellular communication module.

[0035] Please refer to Figure 1 and Figure 2 , Figure 1 is a schematic structural diagram of an unfolded state of an embodiment of the foldable electronic device of the present application, Figure 2 is Figure 1Schematic diagram of the folded state structure of the electronic device in the embodiment; It should be noted that the electronic device in this application may include electronic devices with foldable flexible displays such as mobile phones, tablet computers, laptop computers, wearable devices, etc. The electronic device 10 includes but is not limited to the following structures: a housing 100, a flexible display screen 200, and a rotating shaft assembly 130. It should be noted that the terms "include" and "have" and any variations thereof in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include steps or units not listed, or may optionally further include other steps or components inherent to these processes, methods, products, or devices.

[0036] Specifically, please refer to Figure 3 and Figure 4 , Figure 3 is Figure 1 a schematic diagram of the partial structure disassembly of the electronic device in Figure 4 is Figure 1 a schematic diagram of the partial structure disassembly of another embodiment of the electronic device in. The flexible display screen 200 is connected to the housing 100. The foldable electronic device 10 further includes a rotating shaft decorative member 140, a heat dissipation component 150, and a screen support plate 160; please refer to Figure 2 together. The rotating shaft decorative member 140 surrounds the rotating shaft assembly 130 and is fixedly connected to the rotating shaft assembly 130. When the device is in the folded state, the rotating shaft decorative member 140 is exposed on the side of the device. The rotating shaft decorative member 140 is used to protect the rotating shaft assembly 130; the screen support plate 160 is disposed on the side of the flexible display screen 200 facing the rotating shaft assembly 130. The screen support plate 160 is connected to the rotating shaft assembly 130 and can rotate with the rotation of the rotating shaft assembly 130; the screen support plate 160 is bonded to the flexible display screen 200 of the foldable electronic device 10; the screen support plate 160 includes a first support plate 161 and a second support plate 162. The first support plate 161 and the second support plate 162 are oppositely arranged. When the foldable electronic device 10 is in the folded state, the first support plate 161 and the second support plate 162 semi-enclose the flexible display screen 200, so that the flexible display screen 200 is folded into a preset shape; both the heat dissipation component 150 and the flexible display screen 200 straddle the rotating shaft assembly 130 and extend to opposite sides of the rotating shaft assembly 130. Both the heat dissipation component 150 and the flexible display screen 200 can be folded or unfolded as the foldable electronic device 10 folds or unfolds. Specifically, both the heat dissipation component 150 and the flexible display screen 200 can be folded ( Figure 2 in the state of Figure 1In the middle state), the heat dissipation component 150 is disposed on the side of the flexible display screen 200 facing the rotating shaft component 130. It should be noted that the terms "first", "second", and "third" in the embodiments of the present application are only for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", and "third" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0037] Optionally, please continue to refer to Figure 3 , the housing 100 includes a first housing 110 and a second housing 120; the first housing 110 and the second housing 120 are respectively connected to the rotating shaft component 130, and the first housing 110 and the second housing 120 can rotate relative to the rotating shaft component 130; the detailed structure of the rotating shaft component is within the understanding of those skilled in the art and will not be elaborated here.

[0038] Please refer to Figures 5 to 7 , Figure 5 This is an embodiment of the heat dissipation component of the present application Figure 4 The schematic structural diagram of the Z - direction upward view in the embodiment, Figure 6 is Figure 5 The schematic diagram of the structural disassembly of the heat dissipation component in the embodiment, Figure 7 is Figure 6 The schematic diagram of another perspective; optionally, the heat dissipation component 150 includes a first magnetic member 151 and a flexible heat dissipation fin 152. The flexible heat dissipation fin 152 is provided with redundancy 1521. The first magnetic member 151 is attached to the flexible heat dissipation fin 152. The first magnetic member 151 is used to attract and combine with the second magnetic member 141 on the foldable electronic device 10. When the foldable electronic device 10 is unfolded, the second magnetic member 141 adsorbs the first magnetic member 151 to move in a direction away from the flexible display screen 200, so that the area of the flexible heat dissipation fin 152 attached to the first magnetic member 151 is recessed in a direction away from the flexible display screen 200, the redundancy 1521 of the flexible heat dissipation fin 152 is absorbed, and the rest of the flexible heat dissipation fin 152 is straightened, so that the flexible heat dissipation fin 152 does not press against the screen; when the foldable electronic device 10 is folded, the heat dissipation component 150 is folded accordingly, the first magnetic member 151 moves away from the second magnetic member 141 and releases the adsorption, so that the flexible heat dissipation fin 152 is unfolded, and the redundancy 1521 is released to make up for the elongation amount, avoiding the flexible heat dissipation fin 152 from being elongated, and further alleviating or even avoiding the creep of the flexible heat dissipation fin 152; thus, it is realized that the flexible heat dissipation fin 152 can release or absorb the redundancy 1521 during the folding and flattening processes of the electronic device 10, and further realizes that the flexible heat dissipation fin 152 is not elongated and creeps when the electronic device 10 is folded, and the flexible heat dissipation fin 152 does not press against the screen when the electronic device 10 is unfolded.

[0039] The heat dissipation component for a foldable electronic device provided by an embodiment of the present application includes a first magnetic member attached to a flexible heat sink and a second magnetic member provided on the electronic device; when the foldable electronic device is unfolded, the two magnetic members attract each other, the flexible heat sink is pulled by the first magnetic member and recesses away from the flexible display screen, the redundancy of the flexible heat sink is absorbed, and the rest of the flexible heat sink is straightened, avoiding the flexible heat sink pressing against the screen and ensuring the display quality and reliability of the flexible display screen; when the foldable electronic device is folded, the two magnetic members are disengaged from each other, and the redundancy of the flexible heat sink is released to compensate for the elongation amount, avoiding the flexible heat sink being stretched, thereby alleviating or even avoiding the creep of the flexible heat sink, protecting the flexible heat sink, and improving the service life of the flexible heat sink.

[0040] Optionally, the material of the flexible heat sink 152 can be a graphite sheet. The graphite sheet has the characteristics of high heat dissipation efficiency, small occupied space, light weight, and uniform heat conduction, and is particularly suitable for heat dissipation of foldable electronic devices.

[0041] Optionally, in some embodiments, the first magnetic member 151 has a strip structure and extends along a direction perpendicular to the length direction of the flexible heat sink 152 (such as Figure 5 the Y1 direction in the figure); optionally, in some other embodiments, the first magnetic member 151 can be a block, and a plurality of small block-shaped first magnetic members 151 can extend along a direction perpendicular to the length direction of the flexible heat sink 152 (such as Figure 5 the Y1 direction in the figure); optionally, in other embodiments, the first magnetic member 151 can be a flat column, such as a cylinder or a prism, and a plurality of flat column-shaped first magnetic members 151 can extend along a direction perpendicular to the length direction of the flexible heat sink 152 (such as Figure 5 the Y1 direction in the figure). The first magnetic member 151 can also be other irregular shapes, and those skilled in the art can adjust according to requirements, and no specific limitation is made here.

[0042] Optionally, the material of the first magnetic member 151 can be a steel sheet.

[0043] Optionally, the material of the first magnetic member 151 may be a metallic magnetic material, such materials including iron, nickel, and cobalt, with iron and nickel having relatively high magnetic permeability and magnetic toughness; optionally, the material of the first magnetic member 151 may be an oxide magnetic material, such materials including iron oxide and cobalt oxide, iron oxide being a magnetic oxide material with relatively strong magnetism, and cobalt oxide having excellent properties such as high magnetic saturation and high magnetic permeability; optionally, the material of the first magnetic member 151 may be a ferrite magnet, also known as a ceramic magnet, which is very strong and durable, inexpensive, made of ceramic materials, and corrosion-resistant; optionally, the material of the first magnetic member 151 may be a neodymium iron boron magnet, the magnetic field strength of which is the strongest among permanent magnets, having excellent magnetic properties and easy machinability; optionally, the material of the first magnetic member 151 may be a cobalt magnet, which has a very high magnetic energy product and strong corrosion resistance and oxidation resistance.

[0044] Optionally, the material of the second magnetic member 141 may be a steel sheet.

[0045] Optionally, the material of the second magnetic member 141 may be a metallic magnetic material, such materials including iron, nickel, and cobalt, with iron and nickel having relatively high magnetic permeability and magnetic toughness; optionally, the material of the second magnetic member 141 may be an oxide magnetic material, such materials including iron oxide and cobalt oxide, iron oxide being a magnetic oxide material with relatively strong magnetism, and cobalt oxide having excellent properties such as high magnetic saturation and high magnetic permeability; optionally, the material of the second magnetic member 141 may be a ferrite magnet, also known as a ceramic magnet, which is very strong and durable, inexpensive, made of ceramic materials, and corrosion-resistant; optionally, the material of the second magnetic member 141 may be a neodymium iron boron magnet, the magnetic field strength of which is the strongest among permanent magnets, having excellent magnetic properties and easy machinability; optionally, the material of the second magnetic member 141 may be a cobalt magnet, which has a very high magnetic energy product and strong corrosion resistance and oxidation resistance.

[0046] Optionally, please also refer to Figures 8 to 11a , Figure 8 is Figure 1 a partial structural cross-sectional schematic view of the electronic device in the A - A direction in Figure 9 is Figure 8 a schematic enlarged view of the structure at B in Figure 9a is Figure 9 a schematic enlarged view of the structure at C in Figure 10 is Figure 2 a partial structural cross-sectional schematic view of the electronic device in the D - D direction in Figure 11 is Figure 10 a schematic enlarged view of the structure at E in Figure 11a is Figure 11Schematic enlarged view of the structure at J in the figure; optionally, one end of the flexible heat sink 152 is fixedly connected to the first housing 110, and the other end is fixedly connected to the second housing 120. Only one end of the flexible heat sink 152 fixedly connected to the first housing 110 is shown in the figure, and the illustration of the other end of the flexible heat sink 152 fixedly connected to the second housing 120 is similar, so it will not be elaborated here; please continue to refer to Figure 9a , optionally, when the foldable electronic device 10 is fully unfolded, the heat dissipation assembly 150 is located between the screen support plate 160 and the flexible display screen 200. Only the heat dissipation assembly 150 located between the first support plate 161 and the flexible display screen 200 is shown in the figure, and the illustration of the heat dissipation assembly 150 located between the second support plate 162 and the flexible display screen 200 is similar, so it will not be elaborated here. Optionally, when the foldable electronic device 10 is fully unfolded, the first magnetic member 151 can be located on the side of the flexible heat sink 152 facing the rotating shaft decorative member 140 and between the flexible heat sink 152 and the screen support plate 160. Only the first magnetic member 151 located between the flexible heat sink 152 and the first support plate 161 is shown in the figure, and the illustration of the first magnetic member 151 located between the flexible heat sink 152 and the second support plate 162 is similar, so it will not be elaborated here.

[0047] Optionally, the flexible heat sink 152 is bonded to the first housing 110 and the flexible heat sink 152 is bonded to the second housing 120 through the adhesive 170. The adhesive bonding has high precision, stable performance, and saves costs invisibly. The adhesive 170 can be in other shapes. Only some embodiments are shown in the illustration. In other embodiments, those skilled in the art can adjust according to requirements, and no specific limitation is made here.

[0048] Please refer to Figures 12 to 14 , Figure 12 is Figure 4 Schematic enlarged view of the structure of the rotating shaft decorative member and the second magnetic member at F in the figure, Figure 13 is Figure 3 Schematic cross-sectional view of the assembly of the rotating shaft decorative member and the second magnetic member in the G-G direction in the figure, Figure 14 is Figure 13 Schematic view from another perspective. Optionally, the rotating shaft decorative member 140 is provided with a groove 142, and the second magnetic member 141 is disposed in the groove 142. Please continue to refer to Figure 9a , the second magnetic member 141 can be attracted and cooperated with the first magnetic member 151. When the foldable electronic device 10 is unfolded, the second magnetic member 141 adsorbs the first magnetic member 151 to move in a direction away from the flexible display screen 200, so that the area of the flexible heat sink 152 attached to the first magnetic member 151 is recessed in a direction away from the flexible display screen 200, the redundancy 1521 of the flexible heat sink 152 is absorbed, and the rest of the flexible heat sink 152 is straightened, so that the flexible heat sink 152 does not press against the screen; please continue to refer to Figure 11aWhen the foldable electronic device 10 is folded, the heat dissipation component 150 is folded accordingly, and the first magnetic member 151 moves away from the second magnetic member 141 to release the adsorption, so that the recessed area of the flexible heat dissipation fin 152 is unfolded, and the redundancy 1521 of the flexible heat dissipation fin 152 is released to make up for the elongation amount, avoiding the elongation of the flexible heat dissipation fin 152, and further alleviating or even avoiding the creep of the flexible heat dissipation fin 152.

[0049] Optionally, in some embodiments, the second magnetic member 141 is in a strip structure and extends along the length direction of the rotating shaft decorative member 140 (such as Figure 14 the Y2 direction in Figure 14 ); optionally, in some other embodiments, the second magnetic member 141 may be in a block shape, and a plurality of small block-shaped second magnetic members 141 may extend along the length direction of the rotating shaft decorative member 140 (such as Figure 14 the Y2 direction in

[0050] ); optionally, in other embodiments, the second magnetic member 141 may be in a flat column shape, such as a cylinder or a prism, and a plurality of flat column-shaped second magnetic members 141 may extend along the length direction of the rotating shaft decorative member 140 (such as Figure 15 and Figure 16 ), Figure 15 is Figure 3 the enlarged schematic view of the structure at H in Figure 16 ; Figure 9a is the schematic view of the screen support plate. Optionally, the screen support plate 160 is provided with a redundancy storage groove 163. Please refer to

[0051] and Figure 9a, when the foldable electronic device 10 is fully unfolded, the second magnetic member 141 is located within the projection range of the redundant storage groove 163 in the thickness direction of the electronic device 10 (such as within the range of L1 in Figure 9a ) so that the redundancy 1521 of the flexible heat sink 152 can be accurately accommodated within the redundant storage groove 163; optionally, the first magnetic member 151 is located within the projection range of the redundant storage groove 163 in the thickness direction of the electronic device 10 (such as within the range of L2 in Figure 9a ) so that the first magnetic member 151 and the second magnetic member 141 can be better matched and attracted to further ensure that the redundancy 1521 of the flexible heat sink 152 is accurately accommodated within the redundant storage groove 163.

[0052] Optionally, please continue to refer to Figure 9a , when the foldable electronic device 10 is unfolded, the second magnetic member 141 provided on the rotating shaft decorative member 140 adsorbs the first magnetic member 151 provided on the flexible heat sink 152, and the first magnetic member 151 moves in a direction away from the flexible display screen 200 (such as the Z1 direction in Figure 9a ), so that the area of the flexible heat sink 152 attached to the first magnetic member 151 is recessed in a direction away from the flexible display screen 200 (such as the Z1 direction in Figure 9a ), the redundancy 1521 of the flexible heat sink 152 is absorbed, and the rest of the flexible heat sink 152 is straightened, avoiding the flexible heat sink 152 from pushing against the screen; optionally, please continue to refer to Figure 11a , when the foldable electronic device 10 is folded, the heat dissipation component 150 is folded accordingly, the first magnetic member 151 moves away from the second magnetic member 141 and the adsorption is released, so that the recessed area of the flexible heat sink 152 is unfolded, and the redundancy 1521 of the flexible heat sink 152 is released to make up for the elongation amount, avoiding the flexible heat sink 152 from being stretched, thereby alleviating and even avoiding the creep of the flexible heat sink 152, playing a protective role for the flexible heat sink 152 and improving the service life of the flexible heat sink 152.

[0053] Optionally, there may be one heat dissipation component 150, and one heat dissipation component 150 is located in the middle of the length direction of the rotation axis component 130 to achieve uniform heat dissipation of the foldable electronic device 10. A second magnetic member 141 is provided at a corresponding position of the rotation axis decorative member 140 to ensure that when the foldable electronic device 10 is folded, the flexible heat dissipation fin 152 is not stretched, and when the foldable electronic device 10 is unfolded, the flexible heat dissipation fin 152 does not push against the screen. Optionally, there are multiple heat dissipation components 150, and the multiple heat dissipation components 150 are evenly distributed in the length direction of the rotation axis component 130 to achieve uniform heat dissipation of the foldable electronic device 10. Similarly, a second magnetic member 141 is provided at a corresponding position of the rotation axis decorative member 140 to ensure that when the foldable electronic device 10 is folded, the flexible heat dissipation fin 152 is not stretched, and when the foldable electronic device 10 is unfolded, the flexible heat dissipation fin 152 does not push against the screen; the drawings only show some examples, and in other embodiments, those skilled in the art can adjust according to requirements.

[0054] For the heat dissipation component for a foldable electronic device provided in the embodiment of the present application, a first magnetic member is attached to the flexible heat dissipation fin and a second magnetic member is provided on the electronic device; when the foldable electronic device is unfolded, the two magnetic members attract each other, the flexible heat dissipation fin is pulled by the first magnetic member and recesses away from the flexible display screen, the redundancy of the flexible heat dissipation fin is absorbed, and the rest of the flexible heat dissipation fin is straightened, avoiding the flexible heat dissipation fin from pushing against the screen and ensuring the display quality and reliability of the flexible display screen; when the foldable electronic device is folded, the two magnetic members are disengaged from each other, the redundancy of the flexible heat dissipation fin is released to make up for the elongation amount, avoiding the flexible heat dissipation fin from being stretched, and further alleviating or even avoiding the creep of the flexible heat dissipation fin, playing a protective role in the flexible heat dissipation fin and improving the service life of the flexible heat dissipation fin.

[0055] Please refer to Figure 17 and Figure 18 , Figure 17 is a schematic cross-sectional view of the structure of the electronic device in the unfolded state, Figure 18 is a schematic cross-sectional view of the structure of the electronic device in the folded state. The electronic device 10 can be folded and unfolded along the Figure 17 double-arrow direction in the figure. The electronic device 10 in the embodiment of the present application may further include a functional device 400. Among them, the functional device 400 may include a battery 410, a circuit board 420, etc. Among them, the functional device 400 (the battery 410 and the circuit board 420 shown in the figure) may be disposed in the accommodation cavity of the housing 100. Other structural features of the electronic device are within the understanding of those skilled in the art, and will not be listed and described in detail one by one here.

[0056] Please refer to Figure 19 , Figure 19It is a schematic block diagram of the structural composition of an embodiment of the electronic device of the present application. The electronic device 10 can be a foldable mobile phone, tablet computer, laptop computer, wearable device, etc. In this embodiment, a foldable mobile phone is taken as an example for illustration. The structure of the electronic device 10 may include an RF circuit 910, a memory 920, an input unit 930, a display unit 940 (i.e., the flexible display screen 200 in the above embodiment), a sensor 950, an audio circuit 960, a wifi module 970, a processor 980 (which can be the circuit board 420 in the foregoing embodiment), and a power supply 990 (which can be the battery 410 in the foregoing embodiment), etc. Among them, the RF circuit 910, the memory 920, the input unit 930, the display unit 940, the sensor 950, the audio circuit 960, and the wifi module 970 are respectively connected to the processor 980; the power supply 990 is used to provide electrical energy for the entire electronic device 10.

[0057] Specifically, the RF circuit 910 is used for receiving and transmitting signals; the memory 920 is used for storing data instruction information; the input unit 930 is used for inputting information, and specifically may include a touch panel 931 and other input devices 932 such as operation buttons; the display unit 940 may include a display panel 941, etc.; the sensor 950 includes an infrared sensor, a laser sensor, etc., and is used for detecting user proximity signals, distance signals, etc.; the speaker 961 and the microphone (or microphone) 962 are connected to the processor 980 through the audio circuit 960 and are used for receiving and transmitting sound signals; the wifi module 970 is used for receiving and transmitting wifi signals, and the processor 980 is used for processing the data information of the electronic device 10. For the specific structural features of the electronic device, please refer to the relevant descriptions in the above embodiment and will not be introduced in detail here.

[0058] The foldable electronic device provided by the embodiment of the present application is provided with a first magnetic member attached to the flexible heat sink and a second magnetic member provided on the rotating shaft decorative member, and the flexible heat sink is provided with redundancy. When the foldable electronic device is unfolded, the second magnetic member provided on the rotating shaft decorative member adsorbs the first magnetic member provided on the flexible heat sink, and the first magnetic member moves in a direction away from the flexible display screen, so that the area of the flexible heat sink attached to the first magnetic member is recessed in a direction away from the flexible display screen, the redundancy of the flexible heat sink is absorbed, and the rest of the flexible heat sink is straightened, avoiding the flexible heat sink from pressing against the screen and ensuring the display quality and reliability of the flexible display screen of the electronic device; when the foldable electronic device is folded, the heat dissipation component is folded accordingly, and the first magnetic member moves away from the second magnetic member and releases the adsorption, so that the recessed area of the flexible heat sink is unfolded, and the redundancy of the flexible heat sink is released to make up for the elongation amount, avoiding the flexible heat sink from being elongated, and further alleviating or even avoiding the creep of the flexible heat sink, playing a protective role on the flexible heat sink, improving the service life of the flexible heat sink, and further improving the service life of the foldable electronic device. The embodiment of the present application provides a heat dissipation component applicable to a water droplet foldable electronic device (the shape of the bent area of the flexible display screen in the fully folded state of the electronic device, such as Figure 10 as shown), realizing the heat dissipation of the water droplet foldable electronic device. Similarly, this heat dissipation component is also applicable to a U-shaped screen foldable electronic device.

[0059] The above are only some embodiments of the present invention, and thus do not limit the protection scope of the present invention. Any equivalent device or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A heat dissipation component, characterized in that, The heat dissipation component includes a first magnetic member and a flexible heat sink. The first magnetic member is attached to the flexible heat sink and is used to attract and engage with a second magnetic member on the electronic device, so as to release or absorb redundancy during the folding and flattening of the flexible heat sink with the electronic device.

2. The heat dissipation component according to claim 1, wherein The flexible heat sink is made of graphite sheet.

3. The heat dissipation component according to claim 2, wherein The first magnetic member is made of steel sheet.

4. The heat dissipation component according to claim 1, wherein The first magnetic member is in a strip structure and extends along a direction perpendicular to the length direction of the flexible heat sink.

5. A foldable electronic device, characterized in that, The foldable electronic device includes a rotating shaft assembly, a rotating shaft decorative member, a flexible display screen, and the heat dissipation component according to any one of claims 1-4; The rotating shaft decorative member surrounds the rotating shaft assembly and is fixedly connected to the rotating shaft assembly; The heat dissipation component and the flexible display screen both straddle the rotating shaft assembly and extend to opposite sides of the rotating shaft assembly. The heat dissipation component and the flexible display screen can both fold or unfold with the foldable electronic device. The heat dissipation component is disposed on a side of the flexible display screen facing the rotating shaft assembly; A second magnetic member is provided on the rotating shaft decorative member; the second magnetic member can attract and cooperate with the first magnetic member; When the foldable electronic device is unfolded, the second magnetic member adsorbs the first magnetic member to move away from the flexible display screen, so that the area of the flexible heat sink attached to the first magnetic member is recessed away from the flexible display screen; when the foldable electronic device is folded, the heat dissipation component is folded accordingly, and the first magnetic member moves away from the second magnetic member and releases the adsorption, so that the recessed area of the flexible heat sink is unfolded.

6. The foldable electronic device according to claim 5, wherein, The foldable electronic device includes a screen support plate, and the screen support plate is provided with a redundant storage groove. When the foldable electronic device is unfolded, the redundant storage groove is used to accommodate the recessed area of the flexible heat sink.

7. The foldable electronic device according to claim 5, wherein, The foldable electronic device includes a housing, and the housing includes a first housing and a second housing. The first housing and the second housing are rotatably connected through the rotating shaft assembly; One end of the flexible heat sink is fixedly connected to the first housing, and the other end is fixedly connected to the second housing.

8. The foldable electronic device according to claim 7, wherein The flexible heat sink is adhesively bonded to the first housing and the second housing through back glue.

9. The foldable electronic device according to claim 6, wherein The rotating shaft decorative member is provided with a groove, and the second magnetic member is disposed in the groove; When the foldable electronic device is fully unfolded, the second magnetic member is located within the projection range of the redundant storage groove in the thickness direction of the electronic device.

10. The foldable electronic device according to claim 5, wherein, The heat dissipation component is located in the middle of the length direction of the rotating shaft assembly; Or there are multiple heat dissipation components, and the multiple heat dissipation components are evenly distributed in the length direction of the rotating shaft assembly, and the second magnetic members are provided at corresponding positions of the rotating shaft decorative member to achieve uniform heat dissipation of the foldable electronic device.

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