Electronic devices

Abstract

The present application provides an electronic device, including a first folding body, a second folding body, a first magnetic member, a second magnetic member and a driving mechanism; the first folding body can be folded and unfolded relative to the second folding body, the first magnetic member and the driving mechanism are respectively installed on the first folding body, and the second magnetic member is installed on the second folding body; the driving mechanism includes a driving module and an amplifying module, and the driving module is connected to the first magnetic member through the amplifying module; the driving module drives the amplifying module, and then drives the first magnetic member to move, so that the first magnetic member and the second magnetic member are not attracted to each other, and the first folding body can be unfolded relative to the second folding body, wherein the amplifying module is used to amplify the displacement generated by the driving module. In this embodiment, the driving source for driving the electronic device to unfold is the driving module, and the driving module relies on its own displacement change to drive the electronic device to unfold, and the noise generated by the electronic device during the unfolding process is small.

Description

Technical Field

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

[0002] With the advancement of technology, users have higher and higher demands on the functions of electronic devices. In order to pursue a large-screen display experience and the convenience of carrying, foldable electronic devices are chosen by more and more users.

[0003] In the related art, a foldable electronic device includes a first foldable body and a second foldable body, and the first foldable body and the second foldable body switch between an unfolded state and a folded state. The two foldable bodies are usually firmly folded by the magnetic attraction of a magnet. Due to the large magnetic attraction of the magnet, it is more laborious for the user to open the two foldable bodies, and the user experience is poor. In order to solve this problem, a driving mechanism for driving the two foldable bodies to unfold is added to the existing foldable electronic device, and the driving source of the driving mechanism is usually a motor.

[0004] In the process of implementing the present application, the inventors found that there are at least the following problems in the related art: the motor produces a lot of noise during the driving process, which affects the user experience. Summary of the invention

[0005] An embodiment of the present application provides an electronic device to solve the technical problem in the related art that a motor generates high noise when driving two folding bodies in a folding electronic device to open.

[0006] In order to solve the above technical problems, this application is implemented as follows:

[0007] An embodiment of the present application provides an electronic device, the electronic device comprising: a first folding body, a second folding body, a first magnetic member, a second magnetic member and a driving mechanism;

[0008] The first folding body can be folded and unfolded relative to the second folding body, the first magnetic member and the driving mechanism are respectively installed on the first folding body, and the second magnetic member is installed on the second folding body;

[0009] The driving mechanism comprises a driving module and an amplifying module, and the driving module is connected to the first magnetic member through the amplifying module;

[0010] The driving module drives the amplifying module, thereby driving the first magnetic member to move so that the first magnetic member and the second magnetic member are not attracted to each other, and the first folding body can be unfolded relative to the second folding body, wherein the amplifying module is used to amplify the displacement generated by the driving module.

[0011] The electronic device provided by the embodiment of the present application has the following advantages:

[0012] In an embodiment of the present application, the electronic device includes a first folding body, a second folding body, a first magnetic member, a second magnetic member and a driving mechanism; the first folding body can be folded and unfolded relative to the second folding body, the first magnetic member and the driving mechanism are respectively installed on the first folding body, and the second magnetic member is installed on the second folding body; the driving mechanism includes a driving module and an amplifying module, and the driving module is connected to the first magnetic member through the amplifying module. In practice, when the first folding body can be folded relative to the second folding body, the first magnetic member and the second magnetic member attract each other. The driving module can drive the amplifying module to drive the first magnetic member to move so that the first magnetic member and the second magnetic member do not attract each other, and the first folding body can be unfolded relative to the second folding body, wherein the amplifying module is used to amplify the displacement generated by the driving module. It can be seen that the driving source for driving the electronic device to unfold in this embodiment is the driving module, and the driving module relies on its own displacement change to drive the electronic device to unfold. The noise generated by the electronic device during the unfolding process is small, which improves the user experience, and because the amplifying module can amplify the displacement generated by the driving module, so that the first magnetic member can move to the position where the electronic device unfolds, the reliability of the unfolding of the electronic device is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 One of the schematic diagrams of an electronic device provided by an embodiment of the present application is shown, wherein the amplification module is a scissor mechanism;

[0014] Figure 2 A second schematic diagram of an electronic device provided in an embodiment of the present application, wherein the amplification module is a scissor mechanism;

[0015] Figure 3 A third schematic diagram of an electronic device provided in an embodiment of the present application, wherein the amplification module is a movable pulley block;

[0016] Figure 4 A fourth schematic diagram of an electronic device provided in an embodiment of the present application, wherein the amplification module is a movable pulley block;

[0017] Figure 5 express Figure 1 The enlarged schematic diagram of J in the middle;

[0018] Figure 6 A partial schematic diagram of an electronic device provided in an embodiment of the present application is shown.

[0019] Reference numerals:

[0020] 10: first folding body; 20: second folding body; 30: first magnetic member; 31: first magnet; 32: second magnet; 40: second magnetic member; 41: third magnet; 42: fourth magnet; 50: trigger module;

[0021] 60: driving mechanism; 61: driving module; 611: shape memory alloy wire; 612: pulley; 613: fixed axis; 62: amplification module; 621: movable pulley; 622: pull rope; 623: third rotating axis; 624: scissor mechanism; 625: telescopic unit; 6251: scissor arm; 626: first rotating axis; 627: second rotating axis; 628: first connecting arm; 629: second connecting arm; 63: reset module; 631: second elastic member; 64: straight rod; 66: fixed plate; 67: wedge block; 68: rocker; 69: first elastic member;

[0022] 70: fixing member; 80: wire clamp; 90: temperature sensor; 100: slide groove; 110: first connecting member; 120: second connecting member. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] It should be understood that the references to "one embodiment" or "an embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present application. Therefore, the references to "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0025] The present application embodiment provides an electronic device, referring to Figures 1 to 4The electronic device may specifically include: a first folding body 10, a second folding body 20, a first magnetic member 30, a second magnetic member 40 and a driving mechanism 60; the first folding body 10 can be folded and unfolded relative to the second folding body 20, the first magnetic member 30 and the driving mechanism 60 are respectively installed on the first folding body 10, and the second magnetic member 40 is installed on the second folding body 20; the driving mechanism 60 includes a driving module 61 and an amplifying module 62, and the driving module 61 is connected to the first magnetic member 30 through the amplifying module 62; the driving module 61 drives the amplifying module 62, and then drives the first magnetic member 30 to move, so that the first magnetic member 30 and the second magnetic member 40 are not attracted to each other, and the first folding body 10 can be unfolded relative to the second folding body 20, wherein the amplifying module 62 is used to amplify the displacement generated by the driving module 61. It can be seen that in this embodiment, the driving source for driving the electronic device to unfold is the driving module 61, and the driving module 61 relies on its own displacement change to drive the electronic device to unfold. The noise generated by the electronic device during the unfolding process is small, which improves the user experience. In addition, since the amplification module 62 can amplify the displacement generated by the driving module 61, the first magnetic part can be moved to the unfolded position of the electronic device, thereby improving the reliability of the unfolding of the electronic device.

[0026] In the embodiments of the present application, the electronic device includes but is not limited to a mobile phone, a tablet computer, a laptop computer, a PDA, an e-reader, a vehicle-mounted device, a wearable device, and a pedometer, etc. The electronic device can be folded and unfolded. The following description takes a folding screen mobile phone as an example.

[0027] Specifically, the first folding body 10 and the second folding body 20 of the folding screen mobile phone are movably connected, and the first folding body 10 can be folded and unfolded relative to the second folding body 20. In a preferred embodiment, a hinge can be provided between the first folding body 10 and the second folding body 20, and the hinge can rotate relative to each other to generate a mechanism movement. The two sides of the hinge can be connected to the first folding body 10 and the second folding body 20 respectively, so that the first folding body 10 and the second folding body 20 can achieve relative rotation. Of course, a flexible member can also be provided between the first folding body 10 and the second folding body 20 to achieve relative rotation between the first folding body 10 and the second folding body 20. In this embodiment, the method for achieving relative rotation between the first folding body 10 and the second folding body 20 is not limited to the two examples, and can also be other methods known to those skilled in the art. This embodiment does not limit this, and can be set according to actual needs. It should be noted that the following is an example of achieving relative rotation between the first folding body 10 and the second folding body 20 through a hinge.

[0028] Specifically, the first folding body 10 and the second folding body 20 each include a housing and several components installed in the housing, and the housing is connected to the hinge. The housing is usually used as the appearance of an electronic device, and can then carry out structural bearing and mechanical / electromagnetic protection for the several components. The several components have different functions so that the folding screen mobile phone can maintain the performance of the whole machine. The several components are not limited to the middle frame, bracket, circuit board assembly, various connectors, cables and batteries.

[0029] Specifically, the display screen of the foldable screen mobile phone is installed on the first foldable body 10 and the second foldable body 20, wherein the display screen of the foldable screen mobile phone is a flexible screen, and the flexible screen includes but is not limited to a flexible organic light-emitting diode screen.

[0030] like Figures 1 to 4 As shown, the first magnetic member 30 can be installed in the housing of the first folding body 10, and the second magnetic member 40 can be installed in the housing of the second folding body 20. Both the first magnetic member 30 and the second magnetic member 40 can be arranged under the display screen. Figure 1 and Figure 2 As shown, the first magnetic member 30 may be a single permanent magnet, such as Figure 3 and Figure 4 As shown, it can also be a magnet array composed of at least two permanent magnets, and the magnet array can be, for example, a Halbach array. In practice, the magnetic poles of the permanent magnets in the magnet array can be reasonably arranged so that the magnetic force on the side of the magnet array facing the second magnetic component 40 is larger, and the magnetism on the side away from the second magnetic component 40 is smaller, so as to better cooperate with the second magnetic component. Similarly, the second magnetic component 40 can also be a single permanent magnet or a magnet array. In this embodiment, the magnet types of the first magnetic component and the second magnetic component can be combined and configured according to product requirements. For example, Figure 1 and Figure 2 As shown, both are permanent magnets; or, as Figure 3 and Figure 4 As shown, both are magnet arrays; alternatively, one is a permanent magnet and the other is a magnet array.

[0031] In actual application, when the first folding body 10 is folded relative to the second folding body 20, the first magnetic member 30 and the second magnetic member 40 attract each other, that is, the first magnetic member 30 and the second magnetic member 40 have opposite magnetic poles and attract each other. The magnetic attraction between the first magnetic member 30 and the second magnetic member 40 can make the first folding body 10 and the second folding body 20 folded firmly, and it is difficult for the two to open.

[0032] Specifically, if Figures 1 to 4 As shown, the driving mechanism 60 may include a driving module 61 and an amplifying module 62 , and the driving module 61 is connected to the first magnetic member 30 via the amplifying module 62 .

[0033] In one embodiment, the driving module 61 can drive the amplifying module 62, thereby driving the first magnetic component 30 to move away from the second magnetic component 40. In this case, the distance between the first magnetic component 30 and the second magnetic component 40 gradually increases, and the magnetic attraction between the two gradually decreases. When the magnetic attraction between the two is (basically) zero, the buckling and locking state between the first magnetic component 30 and the second magnetic component 40 is released, and the user can easily unfold the first folding body 10 relative to the second folding body 20.

[0034] In another embodiment, the driving module 61 can drive the amplifying module 62 to move to the right, thereby driving the first magnetic member 30 to move toward the amplifying module 62 (shown as moving to the right), so that the first magnetic member 30 and the second magnetic member 40 are dislocated and repelled from each other, that is, the first magnetic member 30 and the second magnetic member 40 have the same magnetic poles facing each other, and the two are no longer attracted to each other. Among them, the first magnetic member 30 and the second magnetic member 40 are no longer attracted to each other. One situation is that the first magnetic member 30 and the second magnetic member 40 repel each other, and the repulsive force between the two can make the first folding body 10 automatically unfold relative to the second folding body 20; another situation is that the magnetic attraction between the first magnetic member 30 and the second magnetic member 40 is (basically) zero, and the user can easily unfold the first folding body 10 relative to the second folding body 20. It should be noted that the angle at which the first folding body 10 automatically unfolds relative to the second folding body 20 is related to the magnitude of the repulsive force between the first magnetic member 30 and the second magnetic member 40. Therefore, in this embodiment, the two magnetic components can be set according to the angle at which the first folding body 10 actually needs to unfold relative to the second folding body 20.

[0035] Since the driving source for driving the folding screen mobile phone to unfold is the driving module 61, the driving module 61 drives the first magnetic member 30 to move by its displacement change, so that the folding screen mobile phone can unfold. The noise generated during this driving process is small, which improves the user experience. In addition, since the amplification module 62 can amplify the displacement generated by the driving module 61, the required displacement of the first magnetic member 30 is further guaranteed, so that the first magnetic member 30 can move to the set position, that is, to the position where the folding screen mobile phone automatically unfolds, thereby improving the reliability of the unfolding of the folding screen mobile phone.

[0036] It is worth noting that the following description is made by taking the example that the driving module 61 drives the first magnetic component 30 to move away from the second magnetic component 40 .

[0037] In practice, the display screen of an electronic device that realizes relative rotation of the first folding body 10 and the second folding body 20 through a hinge has resilience, and the driving module 61 drives the first magnetic part 30 to move back to the second magnetic part 40. When the resilience force is greater than the magnetic attraction between the first folding body and the second folding body, the folding screen mobile phone can automatically unfold.

[0038] In the embodiments of the present application, Figures 1 to 4 As shown, the driving module 61 includes a shape memory alloy wire 611 and a pulley 612. The pulley 612 is located on one side of the first magnetic component 30 and is connected to the first magnetic component 30 through the amplification module 62. The shape memory alloy wire 611 is wound around the pulley 612. The shape memory alloy wire 611 is deformed when power is supplied, and the driving pulley 612 drives the amplification module 62 to move.

[0039] In practice, shape memory alloy refers to a solid material with a certain shape (usually a material with a thermoelastic martensitic phase transition). After undergoing a certain amount of plastic deformation at a low temperature (in a martensitic state), it is completely restored to its shape before deformation by heating to a certain temperature (usually the martensite disappearance temperature of the material). In other words, shape memory alloys can produce expansion and contraction deformations as the temperature changes, such as elongation or contraction when the temperature reaches the deformation temperature. Contraction is used as an example to illustrate the following. In order to make the shape memory alloy easy to install and control, the shape memory alloy of this embodiment is a linear structure. Therefore, this embodiment is provided with a pulley 612.

[0040] like Figures 1 to 4 As shown, the pulley 612 and the amplification module 62 are both located on the right side of the first magnetic member. Figure 1 and Figure 2 As shown, the pulley 612 is connected to the amplification module 62, as shown in FIG. Figure 3 and Figure 4 As shown, the pulley 612 is located on the side of the amplification module 62 away from the first magnetic member 30 (the right side in the figure). Figures 1 to 4 As shown, the shape memory alloy wire 611 is wound around the pulley 612, and the two ends of the shape memory alloy wire 611 are located on both sides of the pulley 612, and are located on the side of the amplification module 62 away from the first magnetic member 30 (i.e., the right side). The shape memory alloy wires 611 on both sides of the pulley 612 are of the same length so that the deformation of the shape memory alloy wires 611 on both sides is consistent. When deformed, the shape memory alloy wires 611 on both sides jointly drive the amplification module 62 to drive the first magnetic member 30 to move toward the shape memory alloy wire 611 (shown as moving to the right). In this way, the shape memory alloy wire 611 can also generate 2 times the pulling force when deformed to increase the driving force, so that the deformation of the shape memory alloy wire 611 can drive the amplification module 62 to drive the first magnetic member 30 to move.

[0041] Specifically, the shape memory alloy wire 611 can be heated when powered, for example, Figure 2 (compared to Figure 1 )and Figure 4 (compared to Figure 3 ), so that the shape memory alloy wire 611 contracts and deforms, the shape memory alloy wire 611 moves to the right, the driving pulley 612 drives the amplifying module 62 to move to the right, and then drives the first magnetic member 30 to move, so as to realize the unfolding of the first folding body 10 relative to the second folding body 20. Since the shape memory alloy has the advantages of high controllability, simple principle, no noise during deformation, no magnetism and wear resistance, this embodiment relies on the deformation of the shape memory alloy wire 611 to drive the first magnetic member to move, so that the folding screen mobile phone can be unfolded, and there is basically no noise during the unfolding process, which effectively improves the user experience.

[0042] In the embodiment of the present application, the driving mechanism also includes: a wedge 67 and a rocker 68; the wedge 67 is connected to the driving module 61 through the amplification module 62, and is arranged side by side with the amplification module 62, the wedge 67 includes a relative top surface and a bottom surface, the bottom surface is movably arranged on the first folding body 10, and the top surface is an inclined surface; the rocker 68 is slidingly connected to the top surface, and one end of the rocker is rotatably connected to the first folding body 10; the first magnetic member 30 is fixed on the rocker 68, and the shape memory alloy wire 611 drives the amplification module 62 to drive the wedge 67 to move, so that the wedge 67 moves along the rocker 68, and then drives the rocker 68 to rotate, so that the first magnetic member 30 moves back to the second magnetic member 40 and is not attracted to the second magnetic member 40.

[0043] Specifically, if Figure 1 and Figure 2 As shown, the wedge block 67 is located on the left side of the left end of the magnifying module 62. In the thickness direction of the first folding body 10, in the up-down direction shown in the figure, the wedge block 67 includes a top surface and a bottom surface relative to each other. The bottom surface of the wedge block 67 is movably arranged on the first folding body 10, that is, the bottom surface can move on the first folding body 10, for example, a slider can be arranged on the bottom surface, and a slide groove matching the slider is arranged on the first folding body 10, and the slide groove is arranged along the left-right direction. The slider is arranged in the slide groove and can drive the wedge block 67 to slide in the slide groove. Of course, a roller with a slider, a slide rail with a slide groove, and a roller moving in the slide rail can also be used.

[0044] Specifically, the top surface is an inclined surface, for example, Figure 1 and Figure 2As shown, in the direction from the amplifying module 62 to the wedge block 67, that is, in the direction from right to left, the top surface is inclined toward the bottom surface, that is, the right side of the top surface is higher than the left side of the top surface, and the top surface rises from left to right. The rocker 68 is placed on the top surface of the wedge block 67, that is, the rocker 68 is in the same inclination direction as the top surface, the left end of the rocker 68 is located on the left side of the wedge block 67, and is rotatably connected to the first folding body 10, that is, the left end of the rocker 68 can rotate relative to the first folding body 10. In addition, the rocker 68 is slidably connected to the top surface, that is, the rocker 68 can move along the top surface. The left end of the amplification module is fixedly connected to the right side of the wedge block 67, so that when the shape memory alloy wire 611 contracts and deforms, it drives the pulley 612 to drive the amplification module 62 to move rightward, thereby driving the wedge block 67 to move rightward along the rocker 68, and then driving the rocker 68 to rotate toward the wedge block 67 (clockwise), so that the first magnetic member 30 moves away from the second magnetic member 40 (moving downward in the figure), so that the first magnetic member 30 moves away from the second magnetic member 40 to a position where the two are not attracted to each other, so that the first folding body 10 can be unfolded relative to the second folding body 20. Among them, the first magnetic member 30 can be fixed on the upper surface of the rocker 68 by bonding, clamping, etc.

[0045] Specifically, the rocker 68 is slidably connected to the top surface, a slider can be set on the top surface, a slide groove matching the slider can be set on the rocker 68, and the slider is embedded in the slide groove so that the wedge block 67 can move along the rocker 68. Of course, a roller with a slider and a slide rail with a slide groove can also be used, and the roller moves in the slide rail.

[0046] It should be noted that the top surface can also be lowered from left to right, that is, the right side of the top surface is lower than the left side of the top surface. In this case, the amplification module 62 and the driving module 61 can be located on the left side of the wedge block 67, and the left end of the rocker 68 can be located on the upper left side of the top surface of the wedge block 67. The movement process of the first magnetic part 30 is opposite to the example shown in the figure.

[0047] In the embodiment of the present application, the driving mechanism also includes: a first elastic member 69; the rocker 68 is rotatably connected to the first folding body 10 through the first elastic member 69; the surface of the rocker 68 close to the wedge block 67 matches the top surface, and when the shape memory alloy wire 611 drives the wedge block 67 to move, the first elastic member 69 pulls the rocker 68 to rotate so that the rocker 68 is tightly fitted with the top surface.

[0048] Since the spring has the advantages of flexibility, high elasticity and low price, the first elastic member 69 of this embodiment is preferably a spring, but is of course not limited to this, and may also be a spring sheet or other elastic member. This embodiment does not limit this. The first elastic member 69 is described below using the first spring as an example.

[0049] Specifically, the first spring is located between the left end of the rocker 68 and the wedge 67. The upper end of the first spring is fixedly connected to the lower surface of the rocker 68, and the lower end is fixedly connected to the first folding body 10 (e.g., its housing). In this way, when the rocker rotates relative to the first folding body 10, the first spring deforms. The surface of the rocker 68 close to the wedge 67 (the lower surface shown in the figure) matches the top surface of the wedge 67. In practice, the shape of the lower surface of the rocker 68 matches the shape of the top surface. Figure 1 As shown, when the first folding body 10 is folded relative to the second folding body 20, the first spring is in a stretched state. In this way, when the shape memory alloy wire 611 drives the wedge block 67 to move to the right, the first spring can pull the rocker 68 to rotate clockwise, so that the rocker 68 is always in close contact with the top surface of the wedge block 67.

[0050] In an optional embodiment of the present application, Figure 1 and Figure 2 As shown, the enlargement module 62 includes a scissors-fork mechanism 624; the scissors-fork mechanism 624 and the pulley 612 are arranged side by side, and the scissors-fork mechanism 624 can be extended or contracted. In the extension direction of the scissors-fork mechanism 624, one end of the scissors-fork mechanism 624 is fixedly connected to the first folding body 10, and the other end is connected to the wedge block 67, and the pulley 612 is fixedly connected to the scissors-fork mechanism 624; the shape memory alloy wire 611 drives the pulley 612 to drive the scissors-fork mechanism 624 to contract, thereby driving the wedge block 67 to move.

[0051] Specifically, if Figure 1 and Figure 2 As shown, the extension direction of the scissor mechanism 624 is the left-right direction shown in the figure. In the left-right direction, one end of the scissor mechanism 624 (the right end shown in the figure, that is, the end away from the first magnetic member) is fixedly connected to the first folding body 10 (for example, the shell of the first folding body), and the other end (the left end shown in the figure, that is, the end close to the first magnetic member) is fixedly connected to the right side of the wedge block 67. The pulley 612 is fixedly connected to the scissor mechanism 624, and the shape memory alloy wire 611 drives the pulley 612 to drive the scissor mechanism 624 to contract (from Figure 1 to Figure 2 ), the contraction of the scissor mechanism 624 drives the wedge block 67 to move to the right, thereby driving the rocker 68 to rotate clockwise, and then driving the first magnetic member 30 to move downward, so that the first magnetic member 30 and the second magnetic member 40 are not attracted to each other, so that the user can easily unfold the foldable screen mobile phone, or the foldable screen mobile phone can be automatically unfolded.

[0052] like Figure 1 and Figure 2As shown, the scissor mechanism 624 includes multiple groups of telescopic units 625, a first rotating shaft 626, a second rotating shaft 627, two first connecting arms 628 and two second connecting arms 629; each group of telescopic units 625 includes two scissor arms 6251, the two scissor arms 6251 are pivoted through a pivot, and the ends of the scissor arms 6251 relative to each other in two adjacent telescopic units 625 are pivoted to each other; the first rotating shaft 626 is located on the side of the first telescopic unit of the scissor mechanism 624 away from the wedge block 67, and is fixedly connected to the first folding body 10, one end of the two first connecting arms 628 is pivoted through the first rotating shaft 626, and the other end is respectively connected to the two scissor arms 6251 of the first telescopic unit away from the first magnetic member 30 is pivoted; the second rotating shaft 627 is located on the side of the second telescopic unit of the scissors-fork mechanism 624 close to the wedge block 67, and is fixedly connected to the wedge block 67, one end of the two second connecting arms 629 is pivoted through the second rotating shaft 627, and the other end is respectively pivoted to the end of the two scissors arms 6251 of the second telescopic unit close to the first magnetic member 30; the pulley is fixedly sleeved on the pivot of the first telescopic unit, and the shape memory alloy wire drives the pulley to drive each telescopic unit 625 to contract, wherein, in the direction from the scissors-fork mechanism 624 to the wedge block 67, the first telescopic unit is the first telescopic unit 625 of the scissors-fork mechanism 624, and the second telescopic unit is the last telescopic unit 625 of the scissors-fork mechanism 624.

[0053] Specifically, refer to Figure 5 The scissor mechanism 624 includes a plurality of telescopic units 625, each of which includes two scissor arms 6251, which are pivotally connected via a pivot, that is, the two scissor arms 6251 can rotate around the pivot, and the ends of the scissor arms 6251 in two adjacent telescopic units 625 are pivotally connected to each other. In practice, the ends of the scissor arms 6251 in two adjacent telescopic units 625 are also pivotally connected via a pivot, that is, the ends of the scissor arms 6251 in two adjacent telescopic units 625 rotate around the pivot. Figure 1 and Figure 2 As shown, two groups of telescopic units 625 are shown. In the direction from the scissor mechanism 624 to the wedge block 67, that is, from right to left in the figure, the left ends of the two scissor arms 6251 in the first telescopic unit are pivotally connected to the corresponding right ends of the two scissor arms 6251 in the second telescopic unit.

[0054] Specifically, the first rotating shaft 626 is located on the side of the first telescopic unit of the scissor mechanism 624 away from the wedge block 67, that is, located on the right side of the first telescopic unit, and the first rotating shaft 626 is fixedly connected to the first folding body (such as its shell). One end of the two first connecting arms 628 is pivotally connected through the first rotating shaft 626, that is, the right ends of the two first connecting arms 628 are respectively sleeved on the first rotating shaft 626, and both can rotate relative to the first rotating shaft 626. The left ends of the two first connecting arms 628 are respectively pivotally connected to the right ends of the two scissor arms 6251 of the first telescopic unit. In practice, the left end of a first connecting arm 628 (for example, the upper one) and the right end of a scissor arm 6251 (for example, the upper one) of the first telescopic unit are respectively mounted on a pivot, and both rotate relative to the pivot. Similarly, the left end of another first connecting arm 628 (for example, the lower one) and the right end of another scissor arm 6251 (for example, the lower one) of the first telescopic unit are respectively mounted on a pivot, and both rotate relative to the pivot.

[0055] Specifically, the second rotating shaft 627 is located on the side of the second telescopic unit of the scissor mechanism 624 close to the wedge block 67, that is, located on the left side of the second telescopic unit, and the second rotating shaft 627 is fixedly connected to the right side of the wedge block 67. One end of the two second connecting arms 629 is pivoted through the second rotating shaft 627, that is, the left ends of the two second connecting arms 629 are respectively mounted on the second rotating shaft 627, and both can rotate relative to the second rotating shaft 627. The right ends of the two second connecting arms 629 are respectively pivoted to the right ends of the two scissor arms 6251 of the second telescopic unit. In practice, the right end of one second connecting arm 629 (for example, the upper one) and the left end of one scissor arm 6251 (for example, the upper one) of the second telescopic unit are respectively mounted on a pivot, and both rotate relative to the pivot. Similarly, the right end of another second connecting arm 629 (for example, the lower one) and the left end of another scissor arm 6251 (for example, the lower one) of the second telescopic unit are respectively mounted on a pivot, and both rotate relative to the pivot.

[0056] Specifically, if Figure 1 and Figure 2 As shown, the pulley 612 is fixedly mounted on the pivot in the first telescopic unit, so that the shape memory alloy wire 611 can drive the pulley 612 to drive each telescopic unit 625 to contract (two adjacent telescopic units 625 move closer to each other) when shrinking and deforming, thereby driving the wedge block 67 to move to the right, and then driving the first magnetic member 30 to move downward.

[0057] It is worth noting that the distance that the pulley 612 can move to the right under the traction of the shape memory alloy wire 611 is S, S = L*n, L represents the movable length of the shape memory alloy wire 611, and n represents the shrinkage rate of the shape memory alloy wire 611 at a specific temperature. The scissor mechanism 624 amplifies the moving distance S generated by the contraction of the shape memory alloy wire 611, and the amplification factor is 2n (n is the number of telescopic units 625), and the resulting driving displacement is S*2n.

[0058] In the embodiments of the present application, Figure 1 and Figure 2 As shown, the electronic device also includes: a fixing member 70 and a first connecting member 110; the fixing member 70 is located on a side of one end of the scissors-fork mechanism 624 away from the wedge block 67, and is fixedly connected to the first folding body, and one end of the scissors-fork mechanism 624 is fixed to the fixing member 70; the first connecting member 110 is located between the other end of the scissors-fork mechanism 624 and the wedge block 67, one end of the first connecting member 110 is fixedly connected to the other end of the scissors-fork mechanism 624, and the other end is fixedly connected to the wedge block 67.

[0059] For example, Figure 1 and Figure 2 As shown, the fixing member 70 is located on the right side of the right end of the scissor mechanism 624, the lower end of the fixing member 70 is fixedly connected to the first folding body (e.g., its housing), and the first rotating shaft 626 in the scissor mechanism 624 is fixed to the upper end of the fixing member 70 to connect the right end of the scissor mechanism 624 with the first folding body 10. The fixing member 70 may be a plate-like structure, a columnar structure, or other structures, and the structure may be set according to actual conditions.

[0060] For example, Figure 1 and Figure 2 As shown, the first connecting member 110 is located between the left end of the scissor mechanism 624 and the wedge block 67, the left end of the first connecting member 110 is fixedly connected to the right side of the wedge block 67, and the right end of the first connecting member 110 is fixedly connected to the second rotating shaft 627 of the scissor mechanism 624, so as to be fixedly connected to the left end of the scissor mechanism 624. The first connecting member 110 is a tensionable, inelastic material, such as a rope and a metal rod.

[0061] In the embodiments of the present application, Figure 1 and Figure 2 As shown, the driving mechanism also includes: a reset module 63; the reset module 63 is located on the side of the wedge block 67 close to the amplification module 62, one end of the reset module 63 is connected to the wedge block 67, and the other end is fixedly connected to the first folding body 10; when the shape memory alloy wire 611 drives the first magnetic part 30 to move, the reset module 63 is compressed, and when the shape memory alloy wire 611 is powered off, the reset module 63 is reset to drive the first magnetic part 30 to move to its original position.

[0062] Specifically, the reset module 63 is located between the right side of the wedge block 67 and the fixing member 70, one end of the reset module 63 (the left end in the figure) is fixedly connected to the right side of the wedge block 67 to be connected to the first magnetic member 30, and the other end of the reset module 63 (the right end in the figure) is fixedly connected to the fixing member 70 to be fixedly connected to the first folding body 10. It should be noted that in this embodiment, a connecting plate can also be provided between the fixing member 70 and the reset module 63, and the connecting plate is fixedly connected to the first folding body 10. In this case, the right end of the reset module 63 is fixedly connected to the left side of the connecting plate, wherein there is a preset distance between the connecting plate and the fixing member 70, and the preset distance can be 1mm, 2mm, etc., which can be specifically determined according to the size of the driving force required for the reset module 63 to drive the first magnetic member 30 to move to the original position. In the figure, the right end of the reset module 63 is fixed to the fixing member 70, which can make the structure of the driving mechanism 60 simpler and save certain costs.

[0063] from Figure 1 to Figure 2 When the shape memory alloy wire 611 contracts and deforms, it drives the pulley 612 to drive the scissor mechanism 624 to contract, thereby driving the wedge block 67 to move to the right. During this process, the wedge block 67 squeezes the reset module 63, and the reset module 63 is compressed. When the shape memory alloy wire 611 is powered off, the shape memory alloy wire 611 stops contracting and deforming and returns to its original shape. During this process, the reset module 63 is reset and drives the wedge block 67 to move left to its original position (from Figure 2 to Figure 1 ), thereby driving the wedge block 67 to move leftward to the original position, and then driving the rocker 68 to rotate counterclockwise, so that the first magnetic member 30 moves upward to the original position. In addition, the reset of the scissor mechanism 624 can drive the pulley to move leftward, so that the shape memory alloy wire 611 can quickly return to its original state.

[0064] It should be noted that when the first folding body 10 is hinged to the second folding body 20 and the shape memory alloy wire 611 is powered off, the first magnetic member 30 moves toward the second magnetic member 40, the distance between the two magnetic members gradually decreases, and the magnetic attraction between the first magnetic member 30 and the second magnetic member 40 gradually increases. When the magnetic attraction is greater than the rebound force between the display screens of the folding screen mobile phone, the two folding bodies are automatically attracted. For example, when the user rotates the first folding body 10 toward the second folding body 20 to a preset distance, the magnetic attraction can make the two folding bodies automatically attract, further improving the user experience.

[0065] like Figure 1 and Figure 2As shown, the reset module 63 includes a second elastic member 631, one end of the second elastic member 631 is fixedly connected to the wedge block 67, and the other end is fixedly connected to the first folding body 10; while the shape memory alloy wire 611 drives the first magnetic member 30 to move, the second elastic member 631 is compressed, and when the shape memory alloy wire 611 is powered off, the second elastic member 631 is reset.

[0066] Since the spring has the advantages of flexibility, high elasticity and low price, the second elastic member 631 of this embodiment is preferably a spring, but is certainly not limited to this, and can also be a hollow silicone tube with a corrugated side wall, or other elastic members. This embodiment does not limit this. The second elastic member 631 is described below using the second spring as an example.

[0067] Specifically, if Figure 1 and Figure 2 As shown, the reset module 63 includes a second spring, the left end of the second spring is fixedly connected to the right side of the wedge block 67, and the right end of the second spring is fixedly connected to the fixing member 70 to be fixedly connected to the first folding body 10. When the shape memory alloy wire 611 contracts and deforms, it drives the pulley 612 to drive the scissor mechanism 624 to contract, thereby driving the wedge block 67 to move to the right. During this process, the wedge block 67 squeezes the second spring, and the second spring is compressed to store energy. When the shape memory alloy wire 611 is powered off, the shape memory alloy wire 611 stops contracting and deforming and returns to its original shape. During this process, the energy-storing second spring releases energy to reset and drives the wedge block 67 to move left to its original position (from Figure 2 to Figure 1 ), thereby driving the rocker 68 to rotate counterclockwise, and then driving the first magnetic member 30 to move upward to the original position. In addition, the resetting of the scissor mechanism 624 can drive the pulley 612 to move leftward, so that the shape memory alloy wire 611 can quickly return to its original state.

[0068] It should be noted that the reset module 63 in the figure includes a second elastic member 631. Based on this, a second elastic member 631 can also be set, and the two second elastic members 631 are opposite (upper and lower in the figure), and the left end of the added second elastic member 631 is fixedly connected to the right side of the wedge block 67, and the right end is fixedly connected to the fixing member 70. After the shape memory alloy wire 611 is powered off, the two second elastic members 631 can drive the first magnetic member 30 to return to its original position more quickly, and prepare for the next folding of the folding screen mobile phone more quickly, thereby improving the user experience.

[0069] In addition, since the lower surface of the rocker 48 matches the top surface of the wedge 67 , when the shape memory alloy wire 611 drives the wedge 67 to move leftward, the top surface of the wedge 67 moves leftward along the lower surface of the rocker 48 .

[0070] In another optional embodiment of the present application, Figure 3 and Figure 4 As shown, the amplification module 62 may include a movable pulley group; the movable pulley group can move and rotate relative to the first folding body 10, the pulley 612 is connected to the movable pulley group, a pull rope 622 is wound around the movable pulley group, one end of the pull rope 622 is fixedly connected to the first folding body 10, and the other end is fixedly connected to the first magnetic member 30; the shape memory alloy wire 611 can drive the pulley 612, so that the pulley drives the movable pulley group, and then drives the wedge block 67 to move.

[0071] For example, from Figure 3 to Figure 4 When the shape memory alloy wire 611 moves to the right due to contraction deformation, it drives the movable pulley block to move and rotate, thereby driving the pull rope 622 to move on the movable pulley block, so that the pull rope 622 drives the wedge block 67 to move to the right.

[0072] like Figure 2 and Figure 3 As shown, the movable pulley group includes: at least one movable pulley 621; when there is one movable pulley 621, the movable pulley 621 is fixedly connected to the pulley 612, and the other end of the movable pulley 621 is fixedly connected to the wedge 67; when there are at least two movable pulleys 621, at least two movable pulleys 621 are arranged at intervals, the movable pulley 621 close to the pulley 612 is fixedly connected to the pulley 612, the other end of the pull rope 622 on the movable pulley 621 close to the wedge 67 is fixedly connected to the wedge 67, and the other ends of the pull ropes 622 on other movable pulleys 621 are respectively fixedly connected to the adjacent movable pulleys 621; the shape memory alloy wire 611 can drive the pulley 612 to drive each movable pulley 621 to move and rotate.

[0073] In one embodiment, if the movable pulley assembly includes a movable pulley 621, the movable pulley 621 is fixedly connected to the pulley 612 around which the shape memory alloy wire 611 is wound, and a pull rope 622 is wound around the movable pulley 621, one end of the pull rope 622 is fixedly connected to the first folding body 10, and the other end is fixedly connected to the right end of the wedge 67 (the end of the wedge 67 close to the shape memory alloy wire 611). Since the movable pulley 621 can move and rotate relative to the first folding body 10, when the shape memory alloy wire 611 moves to the right due to contraction deformation, the drive pulley 612 drives the movable pulley 621 to move to the right and rotate. In this process, the pull rope 622 on the movable pulley 621 moves on the movable pulley 621 to drive the wedge 67 to move to the right.

[0074] In another embodiment, if the movable pulley assembly includes at least two movable pulleys 621, illustratively, as Figure 3-4As shown in the figure, three movable pulleys 621 are arranged side by side and spaced apart. A pull rope 622 is wound around each movable pulley 621, and each pull rope 622 is located on both sides of the corresponding movable pulley 621. One end of each movable pulley 621 is fixedly connected to the first folding body 10, and the other end of the pull rope 622 on the leftmost movable pulley 621 (the movable pulley 621 close to the wedge 67) is fixedly connected to the right side of the wedge 67. The other ends of the pull ropes 622 on the other two movable pulleys 621 are fixedly connected to the movable pulleys 621 close to them, that is, the other end of the pull rope 622 on the leftmost movable pulley 621 is fixedly connected to the other end of the pull rope 622 on the middle movable pulley 621, and the other end of the pull rope 622 on the middle movable pulley 621 is fixedly connected to the rightmost movable pulley 621. The movable pulley 621 on the left is fixedly connected to the pulley 612 around which the shape memory alloy wire 611 is wound. Since each movable pulley 621 can move and rotate relative to the first folding body 10, when the shape memory alloy wire 611 generates a contraction deformation and moves to the right, it drives the pulley 612 to drive the leftmost movable pulley 621 to move to the right and rotate. During this process, the pull rope 622 on the rightmost movable pulley 621 moves on it to drive the middle movable pulley 621 to move to the right and rotate. During this process, the pull rope 622 on the middle movable pulley 621 moves on it to drive the leftmost movable pulley 621 to move to the right and rotate. During this process, the pull rope 622 on the leftmost movable pulley 621 moves on it to drive the wedge block 67 to move to the right.

[0075] It should be noted that the number of movable pulleys 621 is not limited in this embodiment and can be set according to actual needs. Figure 3 and Figure 4 , the length of the pull rope 622 on both sides of each movable pulley 621 varies, Figure 4 compared to Figure 3 For example, the length of the pull rope 622 on the upper side of each movable pulley 621 becomes shorter, and the shortened part moves to the lower side of the movable pulley 621. The fixed connection between one end of the pull rope 622 and the first folding body 10 and the other end of the pull rope 622 and the movable pulley 621 / wedge block 67 can be achieved by: bonding, connecting by fasteners, and fastening, etc. This embodiment can use any one of them, and the specific selection is based on the situation.

[0076] like Figure 2 and Figure 3As shown, the driving module 61 also includes: a fixed shaft 613, the movable pulley group also includes at least one third rotating shaft 623, at least one slide groove 100 is provided on the first folding body 10, and one movable pulley 621 corresponds to one third rotating shaft 623 and one slide groove 100; the pulley 612 is fixedly sleeved on the fixed shaft 613; when there is one movable pulley 621, the movable pulley 621 is fixedly sleeved on the third rotating shaft 623, the third rotating shaft 623 and the fixed shaft 613 are fixedly connected, and are respectively movably arranged in the slide groove 100; when the movable pulley 621 is one, the movable pulley 621 is fixedly sleeved on the third rotating shaft 623, and the third rotating shaft 623 and the fixed shaft 613 are fixedly connected, and are respectively movably arranged in the slide groove 100; When there are at least two wheels 621, each movable pulley 621 is fixedly mounted on the corresponding third rotating shaft 623, each third rotating shaft 623 is movably arranged in the corresponding slide groove 100, the fixed shaft 613 is movably arranged in the slide groove 100 corresponding to the movable pulley 621 close to the fixed shaft 613, and is fixedly connected to the third rotating shaft 623 corresponding to the movable pulley 621 close to the shape memory alloy wire 611, and the other ends of the pull ropes 622 on the other movable pulleys 621 are fixedly connected to the third rotating shaft 623 corresponding to the adjacent movable pulleys 621.

[0077] In one embodiment, when the movable pulley group includes a movable pulley 621, the number of the chute 100 and the third rotating shaft 623 is also one. The chute 100 is arranged along the direction of movement of the wedge block 67, that is, the left and right direction shown in the figure, and the third rotating shaft 623 is located in the chute 100 and can move in the chute 100. The movable pulley 621 is sleeved on the third rotating shaft 623 and fixedly connected to the third rotating shaft 623. The fixed shaft 613 is also located in the chute 100 and can move in the chute 100. The pulley 612 is sleeved on the fixed shaft 613 and fixedly connected to the fixed shaft 613. In this way, when the shape memory alloy wire 611 contracts and deforms, it drives the pulley 612 to move, drives the fixed shaft 613 to move rightward in the chute 100, thereby drives the third rotating shaft 623 to move rightward and rotate, and then causes the movable pulley 621 to rotate and drives the pull rope 622 to move, so as to pull the wedge block to move rightward.

[0078] In another embodiment, when the movable pulley group includes at least two movable pulleys 621, illustratively, as Figure 2 and Figure 3As shown, three movable pulleys 621 are shown. In this way, the number of the third rotating shaft 623 and the chute 100 is also three, and one movable pulley 621 corresponds to one third rotating shaft 623 and one chute 100. The three chute 100 are arranged at intervals along the left and right directions. In this embodiment, the distance between two adjacent chute 100 is not limited, and can be set according to actual conditions. The three movable pulleys 621 are respectively mounted on the corresponding third rotating shaft 623 and fixedly connected to the corresponding third rotating shaft 623, so that the three movable pulleys 621 can respectively drive the pull ropes 622 on the other parts to move when rotating. Each third rotating shaft 623 is respectively located in the corresponding chute 100 and can move in the corresponding chute 100. The pulley 612 is mounted on the fixed shaft 613 and fixedly connected to the fixed shaft 613. The fixed shaft 613 is located in the chute 100 corresponding to the leftmost movable pulley 621 and can move in the chute 100. In addition, the fixed shaft 613 is fixedly connected to the third rotating shaft 623 corresponding to the rightmost movable pulley 621, the other end of the pull rope 622 on the rightmost movable pulley 621 (referred to as the rightmost pull rope 622) is fixedly connected to the third rotating shaft 623 corresponding to the middle movable pulley 621, and the other end of the pull rope 622 on the middle movable pulley 621 (referred to as the middle pull rope 622) is fixedly connected to the third rotating shaft 623 corresponding to the leftmost movable pulley 621. In this way, the fixed shaft 613 can move to the right to drive the third rotating shaft 623 on the rightmost movable pulley 621 to rotate. 23 rotates to drive the rightmost movable pulley 621 to rotate, thereby driving the rightmost pull rope 622 to move, the pull rope 622 drives the middle third rotating shaft 623 to rotate, the middle third rotating shaft 623 drives the middle movable pulley 621 to rotate, thereby driving the middle pull rope 622 to move, the pull rope 622 drives the leftmost third rotating shaft 623 to rotate, the leftmost third rotating shaft 623 drives the leftmost movable pulley 621 to rotate, thereby driving the leftmost pull rope 622 to move, thereby driving the wedge 67 to move rightward. In summary, the setting of the slide groove 100 can make the pulley 612 and the movable pulley 621 move more smoothly, thereby making the wedge 67 move more smoothly.

[0079] It is worth noting that Figure 2 and Figure 3 As shown, from a physical point of view, each movable pulley 621 belongs to the category of the movable pulley 621 pull shaft, and the distance moved by the pull rope 622 on one movable pulley 621 is twice the distance moved by the third rotating shaft 623. In this way, the displacement of the shape memory alloy wire 611 during deformation is amplified to meet the displacement required for the wedge block 67 to move to the set position. The distance S that the pulley 612 can move to the right along the slide 100 under the traction of the shape memory alloy wire 611 is S, and the movable pulley group amplifies the moving distance S generated by the contraction of the shape memory alloy wire 611, and the amplification factor is 2m (m is the number of movable pulleys 621), and the resulting driving displacement is S*2m.

[0080] It should be noted that, in order not to affect the rotation of the movable pulley 621, a certain distance is set between the fixed shaft 613 and the third rotating shaft 623 (the third rotating shaft 623 on the far right), and the distance is set according to the actual situation. This embodiment does not limit this. In order to save space, the distance is as small as possible. In addition, the slide groove 100 (referred to as the first slide groove 100) that accommodates the fixed shaft 613 and the slide groove 100 (referred to as the second slide groove 100) that accommodates the third rotating shaft 623 (the third rotating shaft 623 on the far right) may not be the same slide groove 100. The first slide groove 100 and the second slide groove 100 are arranged side by side and at intervals.

[0081] like Figure 3 and Figure 4 As shown, the fixed shaft 613 is fixedly connected to the third rotating shaft 623 on the far right via the second connecting member 120. The second connecting member 120 may be made of alloy, plastic or the like, and may be specifically set according to actual needs, which is not limited in this embodiment.

[0082] like Figure 3 and Figure 4 As shown, the reset module 63 is located between the amplifying module 62 and the wedge block, and there is a preset distance between the reset module 63 and the amplifying module 62. One end of the reset module 63 is fixedly connected to the wedge block 67, and the other end is fixedly connected to the first folding body 10. The specific value of the preset distance can be 1mm, 2mm, etc., which is not limited in this embodiment and can be set according to actual needs.

[0083] Specifically, if Figure 3 As shown, the shape memory alloy wire 611 undergoes telescopic deformation when powered on, and the driving pulley 612 drives the rightmost movable pulley 621 to move rightward and rotate, thereby driving the rightmost pull rope 622 to move, and the rightmost pull rope 622 drives the middle movable pulley 621 to move and rotate, thereby driving the middle pull rope 622 to move, and the middle pull rope 622 drives the leftmost movable pulley 621 to move and rotate, thereby driving the leftmost pull rope 622 to move, and then drives the first magnetic member 30 to move rightward. At this time, the wedge block squeezes the reset module 63, and the reset module 63 is compressed; after the shape memory alloy wire 611 is powered off, the shape memory alloy wire 611 stops shrinking and deforming and recovers to its original shape. In this process, the reset module 63 is reset, and the driving wedge block 67 moves leftward to its original position (from Figure 4 to Figure 3); and, the wedge block can drive the leftmost pull rope 622 to move, thereby driving the leftmost movable pulley 621 to move to the left, the leftmost movable pulley 621 drives the middle pull rope 622 to move, thereby driving the middle movable pulley 621 to move to the left, the middle movable pulley 621 drives the rightmost pull rope 622 to move, thereby driving the rightmost movable pulley 621 to move to the left, and then drives the pulley to move to the left, so that the shape memory alloy wire 611 quickly returns to its original state.

[0084] like Figure 3 and Figure 4 As shown, in this embodiment, a fixing plate 66 can be provided between the amplifying module 62 and the first magnetic member 30, and there is a preset distance between the fixing plate 66 and the amplifying module 62, and the fixing plate 66 is fixedly connected to the first folding body 10; Figure 1 and Figure 2 The second elastic member 631 (a second spring is shown in the figure) in the reset module 63 is located between the fixed plate 66 and the wedge block, and the right end of the second elastic member 631 is fixedly connected to the fixed plate 66 .

[0085] like Figure 3 and Figure 4 As shown, when the shape memory alloy wire 611 contracts and moves to the right, it drives the wedge block 67 to move to the right. During this process, the wedge block 67 squeezes the second spring, and the second spring is compressed to store energy. After the shape memory alloy wire 611 is powered off, the shape memory alloy wire 611 stops contracting and deforming and returns to its original shape. During this process, the energy-stored second spring releases energy and drives the wedge block 67 to move to the left, so that the first magnetic component 30 can move to its original position, that is, the position where the two magnetic components can attract each other, to prepare for the next folding of the folding screen mobile phone. During this process, the first magnetic component 30 can drive the shape memory alloy wire 611 to quickly return to its original state.

[0086] like Figure 3 and Figure 4 As shown, there is a preset distance between the fixed plate 66 and the leftmost movable pulley 621 in the movable pulley group to avoid affecting the rotation of the movable pulley 621. The specific value of the preset distance can be 1mm, 2mm, etc. This embodiment is not limited to this and can be set according to actual needs. In the figure, the other end of the pull rope 622 on the leftmost movable pulley 621 can be fixed to the fixed plate 66 to be fixedly connected to the first folding body 10.

[0087] In the embodiments of the present application, Figures 1 to 4As shown, the electronic device also includes: a power supply and a conductive wire clamp 80; the wire clamp 80 is located on the side of the pulley 612 away from the first magnetic member 30, and one end of the wire clamp 80 is fixedly connected to the first folding body 10, and the other end of the wire clamp 80 is connected to the shape memory alloy wire 311, and the power supply supplies power to the shape memory alloy wire 611 through the wire clamp 80 to cause the shape memory alloy wire 611 to deform.

[0088] In practice, the wire clamp 80 is an iron or aluminum metal accessory that can be fixed on the wire. Most of them need to withstand a large tensile force during operation, and some also need to ensure good electrical contact. Specifically, when the shape memory alloy wire 611 is fixed, the shape memory alloy wire 611 is clamped by the wire clamp 80 in this embodiment. Figures 1 to 4 As shown, in this embodiment, two wire clamps 80 are arranged on the right side of the pulley 612, and the two wire clamps 80 are arranged opposite to each other. One end of the two wire clamps 80 is respectively fixed in the first folding body 10, and the other end is respectively connected to the two ends of the shape memory alloy wire 611, that is, one end of the shape memory alloy wire 611 is clamped in one wire clamp 80, and the other end is clamped in another wire clamp 80. Since the wire clamps 80 are conductive, one wire clamp 80 can be connected to the positive pole of the power supply, and the other wire clamp 80 can also be connected to the negative pole of the power supply, so that the shape memory alloy wire 611, the power supply and the two wire clamps 80 form a closed loop. When the power supply is powered on, it can supply power to the shape memory alloy wire 611, so that the shape memory alloy wire 611 is energized, thereby causing the shape memory alloy wire 611 to deform.

[0089] In an embodiment of the present application, the electronic device may further include a trigger module 50 and a controller, the controller being electrically connected to the trigger module 50 and the power supply, respectively. The trigger module 50 is used to generate a trigger signal in response to a user operation when the first folding body 10 is folded relative to the second folding body 20, and the controller is used to control the power supply to power on when the trigger signal is obtained, so as to energize the shape memory alloy wire 611.

[0090] Specifically, the trigger module 50 can be arranged on the first folding body 10 and / or the second folding body 20, and the trigger module 50 shown in the figure is arranged on the second folding body 20. The trigger module 50 is used to generate a trigger signal in response to a user operation. When the first folding body 10 is folded relative to the second folding body 20, that is, when the folding screen mobile phone is in a folded state, if the user wants to open the folding screen mobile phone, an operation can be initiated. User operations include but are not limited to actions such as pressing, touching, and dialing that require contact with the folding screen mobile phone, as well as operations such as issuing voice commands and preparing to shoot that do not require contact with the folding screen mobile phone. The trigger module 50 of the folding screen mobile phone may include a button module, a fingerprint recognition module, a voice input module, and an image acquisition module.

[0091] Specifically, the button module can be installed on the second folding body 20, and has a contact surface exposed on the second folding body 20. When the folding screen mobile phone is folded, the user can touch the contact surface to trigger the button module to generate a trigger signal. Among them, the button module can be an existing button such as a power button or a volume button on the folding screen mobile phone, or a button specially designed for pressing or dialing. The button module can also be installed on the first folding body 10, or on the first folding body 10 and the second folding body 20. The specific installation position of the button module is not limited in this embodiment, and it is set according to actual conditions.

[0092] Specifically, the fingerprint recognition module can be installed on the second folding body 20 and have a contact surface exposed on the second folding body 20. When the folding screen mobile phone is folded, the user can touch the contact surface to trigger the fingerprint recognition module to generate a trigger signal. The trigger signal generated by the fingerprint recognition module carries the user's fingerprint information. The fingerprint recognition module can also be installed on the first folding body 10, or on the first folding body 10 and the second folding body 20. The specific installation position of the fingerprint recognition module is not limited in this embodiment, and it is set according to the actual situation.

[0093] Specifically, the image acquisition module can be installed in the second folding body 20 to collect the user's image information, which can be the user's iris information or the portrait information collected when the user takes a selfie. The trigger signal generated by the image acquisition module carries the user's image information. The image acquisition module can also be installed in the first folding body 10, or in the first folding body 10 and the second folding body 20. The specific installation position of the image acquisition module is not limited in this embodiment and is set according to actual conditions.

[0094] Specifically, the voice input module can be installed in the second folding body 20 to collect the user's voice commands. The voice input module includes but is not limited to a microphone. The trigger signal generated by the voice input module carries the user's voice information. The voice input module can also be installed in the first folding body 10, or in the first folding body 10 and the second folding body 20. The specific installation position of the voice input module is not limited in this embodiment and is set according to actual conditions.

[0095] In actual applications, when the first folding body 10 is folded relative to the second folding body 20, that is, when the folding screen mobile phone is in a folded state, if the user wants to open the folding screen mobile phone, an operation can be initiated. The trigger module 50 generates a trigger signal in response to the operation initiated by the user, and sends the trigger signal to the controller. When the controller obtains the trigger signal, it controls the power supply to power on, so that the closed loop is turned on, and the shape memory alloy wire 611 is energized to shrink and deform, thereby driving the wedge block 67 to move to the right, and then driving the first magnetic part to move away from the second magnetic part, so that the first folding body 10 can be unfolded relative to the second folding body 20.

[0096] In the embodiments of the present application, Figure 2 As shown, the electronic device also includes: a temperature sensor 90; the temperature sensor 90 is installed on the first folding body 10, and is used to detect and send the temperature value of the shape memory alloy wire 611; the controller is electrically connected to the temperature sensor 90, and is used to control the shape memory alloy wire 611 to cut off power when the compared temperature value exceeds the preset temperature value.

[0097] Specifically, the temperature sensor 90 is fixed in the first folding body 10, and is used to detect the temperature value of the shape memory alloy wire 611 to send it to the controller. When the controller obtains the temperature value, it is compared with the preset temperature value. If the obtained temperature value exceeds the preset temperature value, the shape memory alloy wire 611 is controlled to be powered off to avoid the shape memory alloy wire 611 from abnormally damaging other components in the electronic device during the power-on process. Among them, according to the performance of the shape memory alloy wire 611, the preset temperature value is saved in the controller in advance. In addition, in order to make the temperature sensor 90 detect the temperature value of the shape memory alloy wire 611 more accurately, the temperature sensor 90 is arranged in the first folding body 10 near the temperature sensor 90.

[0098] The electronic device may also include a first sensor, which is fixed in the first folding body 10. The first sensor is electrically connected to the controller and is used to detect whether the first magnetic part 30 has moved to a preset position, which may be a position where the first magnetic part is phase-shifted and the magnetic attraction between the second magnetic part is (basically) zero. If so, a position signal is sent to the controller. When the controller obtains the position signal, it controls the shape memory alloy wire 611 to be powered off, and the shape memory alloy wire 611 stops shrinking and deforming and returns to its original shape. During this process, the energy-storing spring releases energy and drives the first magnetic part 30 to move to the left, so that the first magnetic part 30 can move to the original position, that is, the position where the two magnetic parts attract each other, to prepare for the next folding of the folding screen mobile phone.

[0099] In practice, the Hall sensor can detect whether the first magnetic part 30 is in a preset position through changes in the magnetic field of the first magnetic part 30. It has the advantages of being sensitive to the magnetic field, simple in structure, small in size, and having a long service life. Therefore, the first sensor of this embodiment is preferably a Hall sensor. Of course, other sensors that can detect position may also be selected, such as position sensors or other sensors. This embodiment does not limit this, and the specific selection may be made according to actual needs.

[0100] Reference Figure 6 The first magnetic member 30 and the second magnetic member 40 can be a Halbach array, based on which the first magnetic member 30 includes a first magnet 31 and a second magnet 32 ​​arranged alternately, and the first magnet 31 is connected to the second magnet 32, the first magnet 31 has a first magnetic pole, the second magnet 32 ​​has a second magnetic pole, and the first magnetic pole is opposite to the second magnetic pole; the second magnetic member 40 includes a third magnet 41 and a fourth magnet 42 arranged alternately, and the third magnet 41 is connected to the fourth magnet 42, the third magnet 41 has a third magnetic pole, the fourth magnet 42 has a fourth magnetic pole, the third magnetic pole is opposite to the fourth magnetic pole, and is the same as the first magnetic pole, and the fourth magnetic pole is the same as the second magnetic pole; when the first folding body 10 is folded relative to the second folding body 20, the first magnet 31 and the fourth magnet 42 are positioned opposite to each other, and the second magnet 32 ​​and the third magnet 41 are positioned opposite to each other.

[0101] Specifically, if Figure 6 As shown, the first magnetic member 30 includes a first magnet 31 and a second magnet 32 ​​arranged alternately, and the first magnet 31 is connected to the second magnet 32, the first magnet 31 has a first magnetic pole (for example, an S pole), the second magnet 32 ​​has a second magnetic pole (for example, an N pole), and the first magnetic pole is opposite to the second magnetic pole. The second magnetic member 40 includes a third magnet 41 and a fourth magnet 42 arranged alternately, and the third magnet 41 is connected to the fourth magnet 42, the third magnet 41 has a third magnetic pole, the fourth magnet 42 has a fourth magnetic pole, the third magnetic pole is opposite to the fourth magnetic pole, and is the same as the first magnetic pole (S pole), that is, the third magnetic pole is the S pole, and the fourth magnetic pole is the same as the second magnetic pole (N pole), that is, the fourth magnetic pole is the N pole.

[0102] like Figure 6 As shown in the figure, from left to right, the magnetic poles of the first magnetic member 30 are S, N, S, N, S, and the magnetic poles of the second magnetic member 40 are N, S, N, S, N, and when the first folding body 10 is folded relative to the second folding body 20, the first magnet 31 (S pole) and the fourth magnet 42 (N pole) are positioned opposite to each other, and the second magnet 32 ​​(N pole) and the third magnet 41 (S pole) are positioned opposite to each other. At this time, there is an attractive force between the first magnet 31 and the second magnet 32, so that the first folding body 10 and the second folding body 20 can remain firmly in a folded state.

[0103] like Figure 6 As shown, the right side of the rocker 68 (close to the amplifying module 62) is also connected to a straight rod 64, which is arranged in the left-right direction. From left to right, the third to fifth first magnets are fixed on the straight rod. The rocker 68 and the straight rod 64 can be an integrally formed structure to improve the strength of the rocker 68. When the rocker 68 rotates, the straight rod 64 is driven to rotate, so that the entire first magnetic member 30 moves at the same time.

[0104] In the prior art, for the driving mechanism 60 that drives the two folding bodies to unfold, a motor is usually used as a driving source. The energy consumption of the motor-driven intermediate transmission mechanism is relatively high, and the rigid whole machine has a long standby time.

[0105] like Figures 1 to 4 As shown, since the driving source of this embodiment is the shape memory alloy wire 611, the shape memory alloy wire 611 can be deformed by instantaneous heating. This embodiment further amplifies the displacement generated by the deformation of the shape memory alloy wire 611 through the amplification module 62, so that the shape memory alloy wire 611 can drive the first magnetic part 30 to move to a preset position within a shorter power-on time, with low energy consumption and increased standby time of the whole machine.

[0106] It should be noted that the two components mentioned above are fixedly connected, which means that there will be no relative displacement between the two components. The implementation method can be one of bonding, welding, fastener connection, and clamping, and the specific selection can be made according to actual conditions.

[0107] The electronic device provided by the embodiment of the present application has the following advantages:

[0108] In an embodiment of the present application, the electronic device includes a first folding body, a second folding body, a first magnetic member, a second magnetic member and a driving mechanism; the first folding body can be folded and unfolded relative to the second folding body, the first magnetic member and the driving mechanism are respectively installed on the first folding body, and the second magnetic member is installed on the second folding body; the driving mechanism includes a driving module and an amplifying module, and the driving module is connected to the first magnetic member through the amplifying module. In practice, when the first folding body can be folded relative to the second folding body, the first magnetic member and the second magnetic member attract each other. The driving module can drive the amplifying module to drive the first magnetic member to move so that the first magnetic member and the second magnetic member do not attract each other, and the first folding body can be unfolded relative to the second folding body, wherein the amplifying module is used to amplify the displacement generated by the driving module. It can be seen that the driving source for driving the electronic device to unfold in this embodiment is the driving module, and the driving module relies on its own displacement change to drive the electronic device to unfold. The noise generated by the electronic device during the unfolding process is small, which improves the user experience, and because the amplifying module can amplify the displacement generated by the driving module, so that the first magnetic member can move to the position where the electronic device unfolds, the reliability of the unfolding of the electronic device is improved.

[0109] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0110] Although the optional embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including optional embodiments and all changes and modifications that fall within the scope of the present application.

[0111] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the existence of other identical elements in the article or terminal device including the elements. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0112] The technical solution provided by the present application is introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. At the same time, for those skilled in the art, according to the principles and implementation methods of the present application, there may be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. An electronic device, characterized in that: The electronic device comprises: a first folding body, a second folding body, a first magnetic member, a second magnetic member and a driving mechanism; The first folding body can be folded and unfolded relative to the second folding body, the first magnetic member and the driving mechanism are respectively installed on the first folding body, and the second magnetic member is installed on the second folding body; The driving mechanism includes a driving module, an amplifying module, a wedge block and a rocker. The driving module includes a shape memory alloy wire and a pulley. The pulley and the amplifying module are both located on one side of the first magnetic member. The pulley is connected to the first magnetic member through the amplifying module. The shape memory alloy wire is wound around the pulley. The wedge block is connected to the driving module through the amplifying module and is arranged side by side with the amplifying module. The wedge block includes a top surface and a bottom surface relative to each other. The bottom surface is movably arranged on the first folding body, and the top surface is an inclined surface. The rocker slides with the top surface. The shape memory alloy wire is deformed when energized, driving the pulley to drive the amplification module to move, and the amplification module drives the wedge block to move, so that the wedge block moves along the rocker, and then drives the rocker to rotate, so that the first magnetic member moves away from the second magnetic member and is not attracted to the second magnetic member, and the first folding body can be unfolded relative to the second folding body, wherein the amplification module is used to amplify the displacement generated by the driving module.

2. The electronic device according to claim 1, characterized in that: The driving mechanism further comprises: a first elastic member; The rocker is rotatably connected to the first folding body through the first elastic member, and the surface of the rocker close to the wedge block matches the top surface so that the rocker is closely fitted to the top surface.

3. The electronic device according to claim 1, characterized in that: The amplification module comprises: a scissor mechanism; The scissor mechanism can be extended or contracted. In the extension direction of the scissor mechanism, one end of the scissor mechanism is fixedly connected to the first folding body, the other end is fixedly connected to the wedge block, and the pulley is fixedly connected to the scissor mechanism; The shape memory alloy wire drives the pulley to drive the scissor mechanism to contract, thereby driving the wedge block to move.

4. The electronic device according to claim 3, characterized in that: The scissor mechanism comprises a plurality of telescopic units, a first rotating shaft, a second rotating shaft, two first connecting arms and two second connecting arms; Each group of telescopic units comprises two scissor arms, the two scissor arms are pivotally connected via a pivot, and ends of the scissor arms of two adjacent telescopic units are pivotally connected to each other; The first rotating shaft is located at a side of the first telescopic unit of the scissor mechanism away from the wedge block and is fixedly connected to the first folding body. One end of the two first connecting arms is pivotally connected through the first rotating shaft, and the other end is pivotally connected to the ends of the two scissor arms of the first telescopic unit away from the first magnetic member. The second rotating shaft is located at a side of the second telescopic unit of the scissor mechanism close to the wedge block and is fixedly connected to the wedge block. One end of the two second connecting arms is pivotally connected through the second rotating shaft, and the other end is pivotally connected to the ends of the two scissor arms of the second telescopic unit close to the first magnetic member respectively. The pulley is fixedly sleeved on the pivot of the first telescopic unit, and the shape memory alloy wire drives the pulley to drive each of the telescopic units to contract, wherein, in the direction from the scissors-type mechanism to the wedge block, the first telescopic unit is the first telescopic unit of the scissors-type mechanism, and the second telescopic unit is the last telescopic unit of the scissors-type mechanism.

5. The electronic device according to claim 3, characterized in that: The electronic device further comprises: a fixing member and a first connecting member; The fixing member is located at a side of one end of the scissor-fork mechanism away from the wedge block and is fixedly connected to the first folding body, and one end of the scissor-fork mechanism is fixed on the fixing member; The first connecting member is located between the other end of the scissor-type mechanism and the wedge block, one end of the first connecting member is fixedly connected to the other end of the scissor-type mechanism, and the other end is fixedly connected to the wedge block.

6. The electronic device according to claim 1, characterized in that: The driving mechanism further comprises: a reset module; The reset module is located on a side of the wedge block close to the amplification module, one end of the reset module is fixedly connected to the wedge block, and the other end is fixedly connected to the first folding body; When the shape memory alloy wire drives the first magnetic member to move, the reset module is compressed. When the shape memory alloy wire is powered off, the reset module is reset to drive the first magnetic member to move to its original position.

7. The electronic device according to claim 6, characterized in that: The reset module comprises a second elastic member, one end of which is fixedly connected to the wedge block, and the other end of which is fixedly connected to the first folding body; When the shape memory alloy wire drives the first magnetic member to move, the second elastic member is compressed. When the shape memory alloy wire is powered off, the second elastic member is reset.

8. The electronic device according to claim 1, characterized in that: The electronic device further comprises: a power supply and a conductive wire clip; The wire clamp is located on a side of the pulley away from the first magnetic component, and one end of the wire clamp is fixedly connected to the first folding body, and the other end of the wire clamp is connected to the shape memory alloy wire. The power supply supplies power to the shape memory alloy wire through the wire clamp to cause the shape memory alloy wire to deform.

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