Folding equipment and control method thereof

Abstract

The invention provides folding equipment and a control method thereof. The folding equipment comprises a first component, a second component, a first magnetic part, a second magnetic part, a magnetic isolation part and a first memory alloy, the first magnetic part is arranged in the first component, the second magnetic part is arranged in the second component, and when the folding equipment is in the closed state, the first magnetic part and the second magnetic part can be oppositely arranged and magnetically attracted; the first memory alloy is connected with the magnetism isolating piece and used for driving the magnetism isolating piece to reciprocate between a first position and a second position relative to the first component; when the magnetism isolating piece is located at the first position, the magnetism isolating piece does not block a magnetic induction line between the first magnetic piece and the second magnetic piece. When the magnetism isolating piece is located at the second position, the magnetism isolating piece at least partially shields the magnetic induction line between the first magnetic piece and the second magnetic piece. According to the folding equipment, the memory alloy is arranged to drive the magnetism isolating pieces to move in a reciprocating mode, the magnetic attraction acting force between the magnetic pieces is changed, and therefore the folding equipment is convenient to open.

Description

Technical Field

[0001] The present application relates to the technical field of folding devices, and in particular to a folding electronic device and a control method for the folding device. Background Art

[0002] Folding devices are small and portable when folded, and have a large screen for easy browsing when unfolded. In conventional technical solutions, foldable devices generally have two magnets that attract each other on two components to ensure that the folding device has sufficient closing force when closed, but the magnets will also hinder the opening of the folding device. When the folding device needs to be opened, the user needs a large force to overcome the magnetic attraction of the magnet, which is inconvenient to operate and has a poor user experience. Summary of the invention

[0003] A first aspect of an embodiment of the present application provides a folding device, the folding device has a closed state and an open state, the folding device comprises a first component, a second component, a first magnetic component, a second magnetic component, a magnetic isolation component and a first memory alloy; the first component is rotatably connected to the second component; the first magnetic component is arranged inside the first component, and the second magnetic component is arranged inside the second component, when the folding device is in the closed state, the first magnetic component can be arranged opposite to the second magnetic component and magnetically adsorbed; the magnetic isolation component and the first memory alloy are arranged in the first component; the first memory alloy is connected to the magnetic isolation component, and is used to drive the magnetic isolation component to reciprocate between a first position and a second position relative to the first component;

[0004] When the magnetic isolation component is located in the first position, the magnetic isolation component does not block the magnetic lines of force between the first magnetic component and the second magnetic component; when the magnetic isolation component is located in the second position, the magnetic isolation component at least partially blocks the magnetic lines of force between the first magnetic component and the second magnetic component, thereby reducing the magnetic attraction force between the first magnetic component and the second magnetic component.

[0005] In a second aspect, an embodiment of the present application further provides a method for controlling a folding device, the method for controlling a folding device comprising:

[0006] The control circuit board receives the trigger instruction;

[0007] The control circuit board sends a first electrical signal to the first memory alloy, causing the first memory alloy to deform, thereby causing the first memory alloy to drive the magnetic isolation component to move from the first position to the second position, so as to block the magnetic flux lines between the first magnetic component and the second magnetic component, thereby reducing the magnetic attraction force between the first magnetic component and the second magnetic component.

[0008] The folding device provided in the embodiment of the present application is provided with a memory alloy to drive the magnetic isolation part to move back and forth, thereby changing the magnetic attraction force between the magnetic parts, thereby making the folding device easy to open. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0010] Figure 1 is a cross-sectional schematic diagram of an embodiment of a folding device in a conventional technical solution in a closed state;

[0011] Figure 2 is a structural schematic diagram of an embodiment of a folding device of the present application in an unfolded state;

[0012] Figure 3 yes Figure 2 A schematic diagram of the closed state structure of the folding device in the embodiment;

[0013] Figure 4 yes Figure 2 A schematic cross-sectional view of the structure of the folding device at AA in the embodiment;

[0014] Figure 5 yes Figure 2 A schematic cross-sectional view of the embodiment in a closed state;

[0015] Figure 6 yes Figure 2 A cross-sectional schematic diagram of the magnetic isolation sheet in the embodiment being located at the second position;

[0016] Figure 7 yes Figure 2 A schematic cross-sectional view of an embodiment in an open state;

[0017] Figure 8 is a cross-sectional schematic diagram of another embodiment of the folding device of the present application in a closed state;

[0018] Fig. 9 yes Figure 8 A schematic cross-sectional view of an embodiment in an open state;

[0019] Fig.10 is a cross-sectional schematic diagram of another embodiment of the folding device of the present application in a closed state;

[0020] Fig.11 yes Fig.10 A schematic cross-sectional view of an embodiment in an open state;

[0021] Fig.12 is a cross-sectional schematic diagram of another embodiment of the folding device of the present application in a closed state;

[0022] Fig.13 yes Fig.12 A schematic cross-sectional view of an embodiment in an open state;

[0023] Fig.14 is a cross-sectional schematic diagram of another embodiment of the folding device of the present application in a closed state;

[0024] Fig.15 yes Fig.14 A schematic cross-sectional view of an embodiment in an open state;

[0025] Fig.16 It is a flow chart of an embodiment of a control method of a folding device of the present application;

[0026] Fig.17 is a flow chart of another embodiment of the control method of the folding device of the present application;

[0027] Fig.18 It is a flowchart of another embodiment of the control method of the folding device of the present application;

[0028] Fig.19 It is a flow chart of another embodiment of the control method of the folding device of the present application.

[0029] Description of reference numerals:

[0030] Housing assembly 100, display assembly 200, circuit assembly 300;

[0031] A first component 110, a second component 120, a rotating shaft 130, a first magnetic component 140, a second magnetic component 150, a magnetic isolation component 160, a first memory alloy 170, and a second memory alloy 180;

[0032] Battery 310 and control circuit board 320 . DETAILED DESCRIPTION

[0033] The present application is further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0034] The terms "first", "second", and "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", and "third" can expressly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. The terms "including" and "having" in the embodiments of the present application and any of their variations are intended to cover non-exclusive inclusions. 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 optionally also includes steps or units that are not listed, or optionally also includes other steps or components inherent to these processes, methods, products, or devices.

[0035] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0036] As used herein, "electronic devices" (or simply "terminals") include, but are not limited to, devices configured to receive / send communication signals via a wireline connection (e.g., via a public switched telephone network (PSTN), a digital subscriber line (DSL), a digital cable, a direct cable connection, and / or another data connection / network) and / or via a wireless interface (e.g., for a cellular network, a wireless local area network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and / or another communication terminal). Communication terminals configured to communicate via a wireless interface may be referred to as "wireless communication terminals", "wireless terminals" or "mobile terminals". Examples of mobile terminals include, but are not limited to, satellite or cellular phones; personal communication system (PCS) terminals that may combine cellular radiotelephones with data processing, fax, and data communication capabilities; PDAs that may include radiotelephones, pagers, Internet / intranet access, web browsers, organizers, calendars, and / or global positioning system (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers. A mobile phone is an electronic device equipped with a cellular communication module.

[0037] See also Figure 1 , Figure 1 It is a cross-sectional schematic diagram of an embodiment of a folding device in a conventional technical solution in a closed state; in the conventional technical solution, the first component 110 and the second component 120 are respectively connected to the rotating shaft assembly 130. The foldable device generally has two magnets that attract each other, namely the first magnetic component 140 and the second magnetic component 150, respectively, on the two components to ensure that the folding device has sufficient closing force when closed, but the magnets will also hinder the opening of the folding device. When the folding device needs to be opened, the user needs a large force to overcome the magnetic attraction force of the magnet, which is inconvenient to operate and has a poor user experience.

[0038] In view of this, the embodiment of the present application provides a folding device, which drives the magnetic isolation part to move back and forth by setting a memory alloy to change the magnetic attraction force between the magnetic parts, so that the folding device is easy to open. Figures 2 to 4 , Figure 2 is a structural schematic diagram of an embodiment of a folding device of the present application in an unfolded state; Figure 3 yes Figure 2 Schematic diagram of the folding device in the closed state in the embodiment;

[0039] Figure 4 yes Figure 2 The schematic diagram of the cross-sectional structure of the foldable device at AA in the embodiment; it should be noted that the foldable device in the present application may include electronic devices with foldable flexible display screens such as mobile phones, tablet computers, laptops, and wearable devices. Figure 2 As shown, in the embodiment of the present application, the folding device 10 is described by taking a folding mobile phone as an example. The folding device 10 includes but is not limited to the following structures: a housing assembly 100, a display assembly 200 and a circuit assembly 300.

[0040] For more details, please refer to Figure 3 and Figure 4 The housing assembly 100 includes a first component 110, a second component 120 and a rotating shaft 130; the first component 110 and the second component 120 are respectively connected to the rotating shaft 130, and the first component 110 and the second component 120 can rotate with the rotating shaft 130; the detailed structure of the rotating shaft assembly is within the scope of understanding of those skilled in the art and will not be repeated here. The display assembly 200 is respectively connected to the first component 110 and the second component 120 and straddles the rotating shaft 130. The display assembly 200 can rotate with the relative rotation (along the axis) of the first component 110 and the second component 120. Figure 3 Double arrow direction) and closed ( Figure 2 mid state) or flattened ( Figure 1 medium state).

[0041] Optionally, the display assembly 200 may include features such as a flexible display and a support plate, and the circuit assembly 300 may include a battery 310 and a control circuit board 320, etc. In addition, the electronic device may also include a camera, a speaker, and various sensors, etc. The detailed features of this part are within the scope of understanding of those skilled in the art and will not be repeated here.

[0042] See also Figure 5 , Figure 5 Yes Yes Figure 2 The cross-sectional schematic diagram of an embodiment of the folding device of the present application in a closed state, in this embodiment, the housing assembly 100 includes a first component 110, a second component 120, a rotating shaft 130, a first magnetic component 140, a second magnetic component 150, a magnetic shielding component 160 and a first memory alloy 170. The first component 110 and the second component 120 are respectively connected to the rotating shaft 130, and the first component 110 and the second component 120 can rotate with the rotating shaft 130; the detailed structure of the rotating shaft assembly is within the scope of understanding of those skilled in the art, and will not be repeated here. The first magnetic component 140 is arranged inside the first component 110, the second magnetic component 150 is arranged inside the second component 120, and the magnetic shielding component 160 and the first memory alloy 170 are arranged in the first component; the first memory alloy 170 is connected to the magnetic shielding component 160, and is used to drive the magnetic shielding component 160 to move back and forth between the first position and the second position relative to the first component 140.

[0043] When the foldable device 10 is in Figure 5 In the closed state shown, the magnetic isolation member 160 is located at the first position, and the magnetic isolation member 160 does not block the magnetic flux lines between the first magnetic member 140 and the second magnetic member 150. The first magnetic member 140 can be arranged opposite to the second magnetic member 150 and magnetically adsorbed.

[0044] Figure 6 yes Figure 5 A schematic cross-sectional view of a folding device in which the magnetic shielding member of the embodiment is located in the second position, wherein the magnetic shielding member 160 at least partially blocks the magnetic flux lines between the first magnetic member 140 and the second magnetic member 150, thereby reducing the magnetic attraction force between the first magnetic member 140 and the second magnetic member 150. At this time, the user can open the folding device 10 with less force, so that the folding device 10 can be opened from the Figure 5 The closed state is transformed into Figure 7 The open state.

[0045] Figure 7 1 is a cross-sectional schematic diagram of an embodiment of the folding device of the present application in an open state. The first memory alloy 170 is connected to the magnetic isolation member 160, and is used to drive the magnetic isolation member 160 to be in the first position ( Figure 5 The device reciprocates between a middle magnetic separator position and a second position.

[0046] Optionally, the material used for the first memory alloy 170 is a shape memory alloy (SMA), also known as memory metal, which is a type of alloy material that can "memorize" its initial shape and has sensing and driving functions. It has the physical property of changing shape when powered or heated. When the folding device needs to be opened, current is provided to the first memory alloy 170, and the first memory alloy 170 pushes the magnetic isolation sheet and blocks between the two magnets, thereby causing the attraction between the two magnets to decrease sharply, and the folding device is easy to open.

[0047] Optionally, the magnetic shielding piece 160 is made of magnetic shielding material, has high magnetic conductivity, and can have a certain "blocking" effect on the magnetic field. Optionally, the material of the magnetic shielding piece 160 is an iron-nickel alloy material.

[0048] Optionally, the control circuit board 320 is connected to the first memory alloy 170, and the circuit board 320 is used to control the deformation of the first memory alloy 170, so as to drive the magnetic isolation member 160 to move back and forth between the first position and the second position relative to the first member 140. The circuit board receives electrical information from the upper mobile phone processor (such as fingerprint unlocking, face unlocking mobile phone, or a custom start signal), and provides current to the memory alloy when the start condition is met.

[0049] See also Figure 8 and Fig. 9 , Figure 8 is a cross-sectional schematic diagram of another embodiment of the folding device of the present application in a closed state, Fig. 9 It is a cross-sectional schematic diagram of another embodiment of the folding device of the present application in an open state. In this embodiment, the folding device 10 includes a first component 110, a second component 120, a rotating shaft 130, a first magnetic part 140, a second magnetic part 150, a magnetic shielding part 160, a first memory alloy 170 and a second memory alloy 180. The first component 110 and the second component 120 are respectively connected to the rotating shaft 130, and the first component 110 and the second component 120 can rotate with the rotating shaft 130; the detailed structure of the rotating shaft assembly is within the scope of understanding of those skilled in the art, and will not be repeated here. The first magnetic part 140 is arranged inside the first component 110, the second magnetic part 150 is arranged inside the second component 120, the magnetic shielding part 160 and the first memory alloy 170 are arranged in the first component; the first memory alloy 170 is connected to the magnetic shielding part 160. The second memory alloy 180 is arranged in the rotating shaft 130 and the second component 120, and is used to drive the second component 120 to rotate relative to the first component 110. At this time, the first memory alloy 170 and the second memory alloy 180 are respectively disposed on two different components.

[0050] In this embodiment, a shape memory alloy of sufficient size, i.e., a second memory alloy 180, is arranged on the folding device, thereby increasing the lever arm, reducing the force required to pull the screen and open the folding device, and reducing the requirements for the structural strength and electrical loss of the shape memory alloy itself.

[0051] Optionally, the control circuit board is connected to the first memory alloy 170 and the second memory alloy 180, and the circuit board 320 is used to control the deformation of the first memory alloy 170 and the second memory alloy 180, the first memory alloy 170 drives the magnetic isolation member 160 to reciprocate between the first position and the second position relative to the first member 140, and the second memory alloy 180 drives the second member 120 to rotate relative to the first member 110. Through this technical solution, the automatic opening function of the folding device is realized, with the advantages of low power consumption and low noise.

[0052] See also Fig.10 and Fig.11 , Fig.10 is a cross-sectional schematic diagram of another embodiment of the folding device of the present application in a closed state, Fig.11 It is a cross-sectional schematic diagram of another embodiment of the folding device of the present application in an open state. In this embodiment, the housing assembly 100 includes a first component 110, a second component 120, a rotating shaft 130, a first magnetic part 140, a second magnetic part 150, a magnetic shielding part 160, a first memory alloy 170 and a second memory alloy 180. The first component 110 and the second component 120 are respectively connected to the rotating shaft 130, and the first component 110 and the second component 120 can rotate with the rotating shaft 130; the detailed structure of the rotating shaft assembly is within the scope of understanding of those skilled in the art and will not be repeated here. The first magnetic part 140 is arranged inside the first component 110, the second magnetic part 150 is arranged inside the second component 120, and the magnetic shielding part 160 and the first memory alloy 170 are arranged in the first component; the first memory alloy 170 is connected to the magnetic shielding part 160, driving the magnetic shielding part 160 to reciprocate between the first position and the second position relative to the first component 110. The second memory alloy 180 is disposed in the rotating shaft 130 and the first component 110 to drive the first component 110 and the second component 120 to rotate relative to each other. Different from the previous embodiment, in this case, the first memory alloy 170 and the second memory alloy 180 are disposed on the same component.

[0053] Optionally, the control circuit board is connected to the first memory alloy 170 and the second memory alloy 180, and the circuit board 320 is used to control the deformation of the first memory alloy 170 and the second memory alloy 180. The first memory alloy 170 drives the magnetic isolation component 160 to reciprocate between the first position and the second position relative to the first component 110, and the second memory alloy 180 drives the first component 120 to rotate relative to the first component 110.

[0054] See also Fig.12 and Fig.13 , Fig.12 is a cross-sectional schematic diagram of another embodiment of the folding device of the present application in a closed state, Fig.13 It is a cross-sectional schematic diagram of another embodiment of the folding device of the present application in an open state. In this embodiment, the housing assembly 100 includes a first component 110, a second component 120, a rotating shaft 130, a first magnetic part 140, a second magnetic part 150, a magnetic shielding part 160, a first memory alloy 170 and a second memory alloy 180. The first component 110 and the second component 120 are respectively connected to the rotating shaft 130, and the first component 110 and the second component 120 can rotate with the rotating shaft 130; the detailed structure of the rotating shaft assembly is within the scope of understanding of those skilled in the art and will not be repeated here. The first magnetic part 140 is arranged inside the first component 110, the second magnetic part 150 is arranged inside the second component 120, and the magnetic shielding part 160 and the first memory alloy 170 are arranged in the first component; the first memory alloy 170 is connected to the magnetic shielding part 160, driving the magnetic shielding part 160 to reciprocate between the first position and the second position relative to the first component 110. The second memory alloy 180 is disposed in the shaft 130, the first component 110 and the second component 120 to drive the second component 120 to rotate relative to the first component 110. Different from the above embodiment, the second memory alloy 180 is disposed in the shaft 130, the first component 110 and the second component 120.

[0055] See also Fig.14 and Fig.15 , Fig.12 is a cross-sectional schematic diagram of another embodiment of the folding device of the present application in a closed state, Fig.13It is a cross-sectional schematic diagram of another embodiment of the folding device of the present application in an open state. In this embodiment, the housing assembly 100 includes a first component 110, a second component 120, a rotating shaft 130, a first magnetic part 140, a second magnetic part 150, a magnetic shielding part 160, and a first memory alloy 170. The first component 110 and the second component 120 are respectively connected to the rotating shaft 130, and the first component 110 and the second component 120 can rotate with the rotating shaft 130; the detailed structure of the rotating shaft assembly is within the scope of understanding of those skilled in the art, and will not be repeated here. The first magnetic part 140 is arranged inside the first component 110, the second magnetic part 150 is arranged inside the second component 120, and the magnetic shielding part 160 and the first memory alloy 170 are arranged in the first component; the first memory alloy 170 is connected to the magnetic shielding part 160, driving the magnetic shielding part 160 to reciprocate between the first position and the second position relative to the first component 110. The first memory alloy 170 is disposed in the rotating shaft 130, the first component 110 and the second component 120, and is used to drive the second component 120 to rotate relative to the first component 110. Different from the above-mentioned embodiment, the deformation of the first memory alloy 170 not only drives the magnetic isolation member 160 to reciprocate between the first position and the second position relative to the first component 110, but also drives the second component 120 to rotate relative to the first component 110.

[0056] The present application also provides a control method for a folding device, such as Fig.16 As shown, Fig.16 This is a flow chart of an embodiment of a control method for a folding device of the present application. The control method for a folding device includes but is not limited to the following steps:

[0057] Step S10, controlling the circuit board to receive a trigger instruction;

[0058] Step S20, controlling the circuit board to send a first electrical signal to the first memory alloy to deform the first memory alloy, thereby causing the first memory alloy to drive the magnetic isolation component to move from the first position to the second position, thereby reducing the magnetic attraction force between the first magnetic component and the second magnetic component.

[0059] Fig.17 is a flow chart of another embodiment of a control method for a folding device, the control method for a folding device includes but is not limited to the following steps:

[0060] Step S10, controlling the circuit board to receive a trigger instruction;

[0061] Step S20, controlling the circuit board to send a first electrical signal to the first memory alloy to deform the first memory alloy, thereby causing the first memory alloy to drive the magnetic isolation component to move from the first position to the second position, thereby reducing the magnetic attraction force between the first magnetic component and the second magnetic component.

[0062] Step S30, controlling the circuit board to send a second electrical signal to the first memory alloy, causing the first memory alloy to undergo a second deformation, thereby causing the first memory alloy to drive the magnetic shielding member to move from the second position to the first position, thereby removing the shielding of the magnetic flux lines between the first magnetic member and the second magnetic member.

[0063] Fig.18 FIG. 1 is a flow chart of another embodiment of a control method for a folding device. The control method for a folding device includes but is not limited to the following steps:

[0064] Step S10, controlling the circuit board to receive a trigger instruction;

[0065] Step S20, controlling the circuit board to send a first electrical signal to the first memory alloy to deform the first memory alloy, thereby causing the first memory alloy to drive the magnetic isolation component to move from the first position to the second position, thereby reducing the magnetic attraction force between the first magnetic component and the second magnetic component.

[0066] Step S40, the control circuit board sends a third electrical signal to the second memory alloy, so that the second memory alloy undergoes a first deformation, and the second memory alloy drives the second component to rotate relative to the first component toward an unfolded state.

[0067] Through this technical solution, the automatic opening function of the folding device is realized, which has the advantages of low power consumption and low noise.

[0068] Fig.19 FIG. 1 is a flow chart of another embodiment of a control method for a folding device, and the control method for a folding device includes but is not limited to the following steps:

[0069] Step S10, controlling the circuit board to receive a trigger instruction;

[0070] Step S20, controlling the circuit board to send a first electrical signal to the first memory alloy to deform the first memory alloy, thereby causing the first memory alloy to drive the magnetic isolation component to move from the first position to the second position, thereby reducing the magnetic attraction force between the first magnetic component and the second magnetic component.

[0071] Step S40, the control circuit board sends a third electrical signal to the second memory alloy, so that the second memory alloy undergoes a first deformation, and the second memory alloy drives the second component to rotate relative to the first component toward an unfolded state.

[0072] Step S50, the control circuit board sends a fourth electrical signal to the second memory alloy, so that the second memory alloy undergoes a second deformation, and the second memory alloy drives the second component to rotate relative to the first component toward a closed state.

[0073] The above descriptions are only some embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A folding device, characterized in that: The folding device has a closed state and an open state, and comprises a first component, a second component, a first magnetic component, a second magnetic component, a magnetic isolation component and a first memory alloy; The first member is rotatably connected to the second member; The first magnetic member is disposed inside the first component, and the second magnetic member is disposed inside the second component. When the folding device is in the closed state, the first magnetic member can be disposed opposite to the second magnetic member and be magnetically adsorbed; The magnetic isolation member and the first memory alloy are arranged in the first component; the first memory alloy is connected to the magnetic isolation member, and is used to drive the magnetic isolation member to reciprocate between a first position and a second position relative to the first component; When the magnetic isolation component is located in the first position, the magnetic isolation component does not block the magnetic lines of force between the first magnetic component and the second magnetic component; when the magnetic isolation component is located in the second position, the magnetic isolation component at least partially blocks the magnetic lines of force between the first magnetic component and the second magnetic component, thereby reducing the magnetic attraction force between the first magnetic component and the second magnetic component.

2. The folding device according to claim 1, characterized in that: The magnetic isolation member is made of an iron-nickel alloy.

3. The folding device according to claim 1, characterized in that: The folding device also includes a control circuit board, which is connected to the first memory alloy and is used to control the deformation of the first memory alloy.

4. The folding device according to claim 3, characterized in that: The folding device further comprises a rotating shaft and a second memory alloy, wherein the rotating shaft is connected between the first component and the second component, and the first component and the second component can rotate relative to the rotating shaft; The second memory alloy is arranged in the rotating shaft and the first component and / or in the second component, and is used to drive the second component and the first component to rotate relative to each other.

5. The folding device according to claim 4, characterized in that: The control circuit board is connected to the second memory alloy and is used to control the deformation of the second memory alloy.

6. The folding device according to claim 4, characterized in that: The first memory alloy and the second alloy are an integral structure.

7. A control method for a folding device, characterized in that: The control method of the folding device comprises: The control circuit board receives the trigger instruction; The control circuit board sends a first electrical signal to the first memory alloy, causing the first memory alloy to deform, thereby causing the first memory alloy to drive the magnetic isolation component to move from the first position to the second position, so as to block the magnetic flux lines between the first magnetic component and the second magnetic component, thereby reducing the magnetic attraction force between the first magnetic component and the second magnetic component.

8. The control method of the folding device according to claim 7, characterized in that: The control method of the folding device further includes: The control circuit board sends a second electrical signal to the first memory alloy, causing the first memory alloy to undergo a second deformation, thereby causing the first memory alloy to drive the magnetic isolation component to move from the second position to the first position, thereby removing the shielding of the magnetic flux lines between the first magnetic component and the second magnetic component.

9. The control method of the folding device according to claim 7, characterized in that: The control method of the folding device further includes: The control circuit board sends a third electrical signal to the second memory alloy, causing the second memory alloy to undergo a first deformation, and the second memory alloy drives the second component to rotate relative to the first component toward an unfolded state.

10. The control method of the folding device according to claim 9, characterized in that: The control method of the folding device further includes: The control circuit board sends a fourth electrical signal to the second memory alloy, causing the second memory alloy to undergo a second deformation, and the second memory alloy drives the second component to rotate relative to the first component toward a closed state.

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