CN114374756A

CN114374756A - Electronic device

Info

Publication number: CN114374756A
Application number: CN202210069407.4A
Authority: CN
Inventors: 罗政军; 何叶青; 邓鼎文; 戢记球
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-01-20
Filing date: 2022-01-20
Publication date: 2022-04-19

Abstract

The application provides an electronic device, which comprises a first folding main body, a second folding main body, a first magnetic piece, a second magnetic piece and a driving mechanism; the first folding main body can be folded and unfolded relative to the second folding main body, the first magnetic piece and the driving mechanism are respectively arranged on the first folding main body, and the second magnetic piece is arranged on the second folding main body; the driving mechanism comprises a driving module and an amplifying module, and the driving module is connected with the first magnetic piece through the amplifying module; the driving module drives the amplifying module to drive the first magnetic piece to move so that the first magnetic piece and the second magnetic piece are not attracted, the first folding body can be unfolded relative to the second folding body, and the amplifying module is used for amplifying displacement generated by the driving module. The driving source for driving the electronic equipment to be unfolded is the driving module, the driving module drives the electronic equipment to be unfolded according to the displacement change of the driving module, and the noise generated in the unfolding process of the electronic equipment is small.

Description

Electronic device

Technical Field

The application relates to the technical field of electronic equipment, in particular to electronic equipment.

Background

With the advancement of technology, the demand for the functions of consumer electronic devices is higher and higher. In order to pursue a large-screen display experience and portability, the folding electronic device is selected by more users.

In the related art, a folding electronic apparatus includes a first folding body and a second folding body that are switched between an unfolded state and a folded state. Two folding main parts make two folding main parts fold firmly through magnet magnetic attraction usually, because magnet magnetic attraction is great, it is harder when the user opens two folding main parts, user experience feels in order to solve this problem, has increased the actuating mechanism that two folding main parts of drive expanded among the current folding electronic equipment, and actuating mechanism's driving source is the motor usually.

In the process of implementing the present application, the inventors found that at least the following problems exist in the related art: the motor is big in noise in the drive process, influences user experience and feels.

Disclosure of Invention

The embodiment of the application provides electronic equipment to solve the technical problem that noise is large when a motor drives two folding main bodies in the folding electronic equipment to be opened in the related art.

In order to solve the technical problem, the present application is implemented as follows:

an embodiment of the present application provides an electronic device, which includes: the folding device comprises a first folding body, a second folding body, a first magnetic piece, a second magnetic piece and a driving mechanism;

the first folding body can be folded and unfolded relative to the second folding body, the first magnetic part and the driving mechanism are respectively arranged on the first folding body, and the second magnetic part is arranged on the second folding body;

the driving mechanism comprises a driving module and an amplifying module, and the driving module is connected with the first magnetic piece through the amplifying module;

the driving module drives the amplifying module to further drive the first magnetic piece to move so that the first magnetic piece and the second magnetic piece are not attracted to each other, the first folding main body can be unfolded relative to the second folding main body, and the amplifying module is used for amplifying displacement generated by the driving module.

The electronic equipment provided by the embodiment of the application has the following advantages:

in an embodiment of the present application, an electronic apparatus includes a first folding body, a second folding body, a first magnetic member, a second magnetic member, and a driving mechanism; the first folding main body can be folded and unfolded relative to the second folding main body, the first magnetic piece and the driving mechanism are respectively arranged on the first folding main body, and the second magnetic piece is arranged on the second folding main body; the driving mechanism comprises a driving module and an amplifying module, and the driving module is connected with the first magnetic piece through the amplifying module. In practice, the first magnetic member and the second magnetic member attract each other when the first folding body is foldable relative to the second folding body. The driving module can drive the amplifying module to drive the first magnetic part to move so that the first magnetic part and the second magnetic part are not attracted mutually, the first folding main body can be unfolded relative to the second folding main body, and the amplifying module is used for amplifying displacement generated by the driving module. Therefore, the driving source for driving the electronic equipment to unfold is the driving module, the driving module drives the electronic equipment to unfold by means of the displacement change of the driving module, the electronic equipment is low in noise generated in the unfolding process, the experience feeling of a user is improved, and the displacement generated by the driving module can be amplified by the amplifying module, so that the first magnetic piece can move to the position where the electronic equipment is unfolded, and the reliability of the electronic equipment unfolding is improved.

Drawings

Fig. 1 is a schematic diagram of an electronic device according to an embodiment of the present disclosure, in which an amplifying module is a scissors mechanism;

fig. 2 is a second schematic diagram of an electronic device according to an embodiment of the present disclosure, in which the amplifying module is a scissors mechanism;

fig. 3 is a third schematic view of an electronic device according to an embodiment of the present disclosure, in which the amplifying module is a movable pulley block;

fig. 4 is a fourth schematic view of an electronic device according to an embodiment of the present disclosure, in which the amplifying module is a movable pulley block;

FIG. 5 shows an enlarged schematic view at J of FIG. 1;

fig. 6 shows a schematic diagram of a portion of an electronic device according to an embodiment of the present application.

Reference numerals:

10: a first folded body; 20: a second folded body; 30: a first magnetic member; 31: a first magnet; 32: a second magnet; 40: a second magnetic member; 41: a third magnet; 42: a fourth magnet; 50: a trigger module;

60: a drive mechanism; 61: a drive module; 611: a shape memory alloy wire; 612: a pulley; 613: a fixed shaft; 62: an amplifying module; 621: a movable pulley; 622: pulling a rope; 623: a third rotating shaft; 624: a scissor mechanism; 625: a telescopic unit; 6251: a scissor arm; 626: a first rotating shaft; 627: a second rotating shaft; 628: a first connecting arm; 629: a second connecting arm; 63: a reset module; 631: a second elastic member; 64: a straight rod; 66: a fixing plate; 67: a wedge block; 68: a rocker; 69: a first elastic member;

70: a fixing member; 80: wire clamps; 90: a temperature sensor; 100: a chute; 110: a first connecting member; 120: a second connecting member.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

An embodiment of the present application provides an electronic device, and with reference to fig. 1 to 4, the 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 is foldable and unfoldable with respect to the second folding body 20, the first magnetic member 30 and the driving mechanism 60 are respectively installed at the first folding body 10, and the second magnetic member 40 is installed at the second folding body 20; the driving mechanism 60 comprises a driving module 61 and an amplifying module 62, wherein the driving module 61 is connected with the first magnetic member 30 through the amplifying module 62; the driving module 61 drives the amplifying module 62 to drive 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, the first folding main body 10 can be unfolded relative to the second folding main body 20, and the amplifying module 62 is used for amplifying the displacement generated by the driving module 61. It can be seen that the driving source for driving the electronic device to unfold in this embodiment is the driving module 61, and the driving module 61 drives the electronic device to unfold by virtue of the displacement change of the driving module 61 itself, so that the electronic device has low noise generated in the unfolding process, and the experience of the user is improved, and in addition, the amplification module 62 can amplify the displacement generated by the driving module 61, so that the first magnetic member can be moved to the position where the electronic device is unfolded, and the reliability of the electronic device unfolding is improved.

In the embodiment of the present application, the electronic device includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, an electronic reader, a vehicle-mounted device, a wearable device, a pedometer, and the like. The electronic device can be folded and unfolded. The following description will be made by taking a folding screen mobile phone as an example.

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 may be disposed between the first folding body 10 and the second folding body 20, the hinge may be relatively rotated to generate the mechanism motion, and both sides of the hinge may be connected to the first folding body 10 and the second folding body 20, respectively, to allow the first folding body 10 and the second folding body 20 to relatively rotate. Of course, a flexible member may be provided between the first folded body 10 and the second folded body 20 to realize the relative rotation of the first folded body 10 and the second folded body 20. In the present embodiment, the manner of implementing the relative rotation between the first folding main body 10 and the second folding main body 20 is not limited to the two examples, and other manners known to those skilled in the art may also be used. The following description will be made taking an example in which the first folding body 10 and the second folding body 20 are rotated relative to each other by a hinge.

Specifically, each of the first and

second folding bodies

10 and 20 includes a housing coupled with a hinge and several parts mounted in the housing. The housing generally serves as an appearance piece of the electronic device, enabling the structural carrying of the several components as well as the mechanical/electromagnetic protection. The components have different functions respectively, so that the folding screen mobile phone can keep the performance of the whole mobile phone. The several components are not limited to center frames, brackets, circuit board assemblies, various connectors, cables, batteries, and the like.

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

As shown in fig. 1 to 4, the first magnetic member 30 may be installed in the case of the first folding body 10, and the second magnetic member 40 may be installed in the case of the second folding body 20. Both the first magnetic member 30 and the second magnetic member 40 may be disposed under the display screen. As shown in fig. 1 and 2, the first magnetic member 30 may be a single permanent magnet, as shown in fig. 3 and 4, or may be a magnet array of at least two permanent magnets, which may 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 of one side of the magnet array, which faces the second magnetic part 40, is larger, and the magnetic force of one side, which faces away from the second magnetic part 40, is smaller, so as to be better matched with the second magnetic part. Likewise, the second magnetic member 40 may be a single permanent magnet or an array of magnets. The present embodiment may configure the magnet types of the first magnetic member and the second magnetic member in combination according to product requirements. For example, as shown in fig. 1 and 2, both are permanent magnets; alternatively, as shown in fig. 3 and 4, both are magnet arrays; alternatively, one is a permanent magnet and the other is a magnet array.

In practical applications, when the first folding body 10 is folded with respect to the second folding body 20, the first magnetic member 30 and the second magnetic member 40 are attracted to each other, that is, the first magnetic member 30 and the second magnetic member 40 have opposite magnetic poles, and are attracted to each other. The first folding body 10 and the second folding body 20 can be stably folded by the magnetic attraction between the first magnetic member 30 and the second magnetic member 40, and are difficult to be opened.

Specifically, as shown in fig. 1 to 4, 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 through the amplifying module 62.

In an embodiment, the driving module 61 may drive the amplifying module 62 to drive the first magnetic member 30 to move away from the second magnetic member 40, in this case, the distance between the first magnetic member 30 and the second magnetic member 40 gradually increases, the magnetic attraction force between the first magnetic member 30 and the second magnetic member 40 gradually decreases, and when the magnetic attraction force between the first magnetic member 30 and the second magnetic member 40 is (substantially) zero, the locking state between the first magnetic member 30 and the second magnetic member 40 is released, so that the user can easily unfold the first folding main body 10 relative to the second folding main body 20.

In another embodiment, the driving module 61 can drive the amplifying module 62 to move rightward, so as to drive the first magnetic member 30 to move toward the amplifying module 62 (shown as rightward), so that the first magnetic member 30 and the second magnetic member 40 are dislocated and repelled, that is, like magnetic poles of the first magnetic member 30 and the second magnetic member 40 are opposite to each other, and are no longer attracted. Wherein, the first magnetic member 30 and the second magnetic member 40 are not attracted to each other, and one of the situations is: the first magnetic member 30 and the second magnetic member 40 repel each other, and the repulsive force therebetween enables the first folding body 10 to be automatically unfolded with respect to the second folding body 20; the other situation is that: the (substantially) zero magnetic attraction between the first and second

magnetic members

30 and 40 makes it easy for a user to unfold the first folded body 10 relative to the second folded body 20. It should be noted that the angle at which the first folding body 10 is automatically unfolded 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, and therefore, the present embodiment can set the two magnetic components according to the angle at which the first folding body 10 is actually required to be unfolded relative to the second folding body 20.

Because 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 part 30 to move by means of the displacement change of the driving module, so that the folding screen mobile phone is unfolded, the noise generated in the driving process is small, and the experience of a user is improved. In addition, the amplifying module 62 can amplify the displacement generated by the driving module 61, so as to further ensure the displacement required by the first magnetic member 30, so that the first magnetic member 30 can be moved to a set position, that is, to a position where the folding screen mobile phone is automatically unfolded, thereby improving the reliability of unfolding the folding screen mobile phone.

It should be noted that, the following description will take the driving module 61 to drive the first magnetic member 30 to move away from the second magnetic member 40 as an example.

In practice, the display screen of the electronic device that realizes the relative rotation between the first folding main body 10 and the second folding main body 20 through the hinge has a resilience force, the driving module 61 drives the first magnetic member 30 to move back to the second magnetic member 40, and when the resilience force is greater than the magnetic attraction force between the first folding main body and the second folding main body, the mobile phone with the folding screen can be automatically unfolded.

In the present embodiment, as shown in fig. 1 to 4, the driving module 61 includes a shape memory alloy wire 611 and a pulley 612, and the pulley 612 is located at one side of the first magnetic member 30 and is connected to the first magnetic member 30 through the amplifying module 62; the shape memory alloy wire 611 is wound on the pulley 612, and the shape memory alloy wire 611 deforms under the condition of being electrified, so that the pulley 612 is driven to drive the amplification module 62 to move.

In practice, a shape memory alloy is a solid material (usually, a material having a thermo-elastic martensitic transformation) having a certain shape, and is plastically deformed by a certain amount of deformation at a certain low temperature (in a martensitic state), and then is heated to a temperature (usually, the martensite disappearance temperature) or higher, thereby completely restoring the shape before the deformation. That is, the shape memory alloy can be deformed by expansion and contraction with temperature change, such as elongation or contraction when the temperature reaches the deformation temperature, and the contraction is exemplified as follows. In order to make the shape memory alloy easy to install and control, the shape memory alloy of the present embodiment is a wire structure, and therefore, the present embodiment is provided with the pulley 612,

as shown in fig. 1 to 4, the pulley 612 and the amplifying module 62 are both located on the right side of the first magnetic member, as shown in fig. 1 and 2, the pulley 612 is attached to the amplifying module 62, and as shown in fig. 3 and 4, the pulley 612 is located on the side (right side as shown) of the amplifying module 62 away from the first magnetic member 30. As shown in fig. 1 to 4, the shape memory alloy wire 611 is wound around the pulley 612, and both ends of the shape memory alloy wire 611 are located at both sides of the pulley 612 and at a side (i.e., right side) of the amplifying module 62 away from the first magnetic member 30. The lengths of the shape memory alloy wires 611 on both sides of the pulley 612 are the same, so that the shape memory alloy wires 611 on both sides deform uniformly, and during the deformation, the shape memory alloy wires 611 on both sides jointly drive the amplifying module 62 to drive the first magnetic member 30 to move (shown as moving to the right) toward the shape memory alloy wires 611. In this way, the shape memory alloy wire 611 can generate 2 times of pulling force during deformation to increase the driving force, so that the deformation of the shape memory alloy wire 611 can drive the amplifying module 62 to drive the first magnetic element 30 to move.

Specifically, the shape memory alloy wire 611 may be heated when power is applied, for example, as shown in fig. 2 (compared with fig. 1) and fig. 4 (compared with fig. 3), so that the shape memory alloy wire 611 is deformed in a shrinkage manner, 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 further drives the first magnetic element 30 to move, and the first folding body 10 is unfolded relative to the second folding body 20. Because the shape memory alloy has the advantages of high controllability, simple principle, no noise during deformation, no magnetism, wear resistance and the like, the first magnetic part is driven to move by the deformation of the shape memory alloy wire 611, so that the folding screen mobile phone is unfolded, no noise exists basically during the unfolding process, and the experience of a user is effectively improved.

In an embodiment of the present application, the driving mechanism further includes: wedge 67 and rocker 68; the wedge block 67 is connected with the driving module 61 through the amplifying module 62 and is arranged side by side with the amplifying module 62, the wedge block 67 comprises a top surface and a bottom surface which are opposite, the bottom surface is movably arranged on the first folding main body 10, and the top surface is an inclined surface; the rocking bar 68 is slidably connected with the top surface, and one end of the rocking bar is rotatably connected with the first folding main body 10; the first magnetic member 30 is fixed on the rocker 68, and the shape memory alloy wire 611 drives the amplifying module 62 to drive the wedge 67 to move, so that the wedge 67 moves along the rocker 68, and further drives the rocker 68 to rotate, so that the first magnetic member 30 moves away from the second magnetic member 40 and is not attracted to the second magnetic member 40.

Specifically, as shown in fig. 1 and 2, the wedge 67 is located on the left side of the left end of the enlargement module 62, and the wedge 67 includes a top surface and a bottom surface facing each other in the thickness direction of the first folding body 10, the vertical direction being shown. On the first folding main part 10 was located to the bottom surface of voussoir 67 is movably, that is to say, the bottom surface can move on first folding main part 10, for example can set up the slider on the bottom surface, set up the spout that matches with the slider on the first folding main part 10, the spout sets up along left right direction, the slider is located in the spout, and can drive voussoir 67 and slide in the spout, of course, can also adopt the gyro wheel area body slider, slide rail area body spout, the gyro wheel removes in the slide rail.

Specifically, the top surface is a slope, and illustratively, as shown in fig. 1 and 2, in a direction from the enlargement module 62 to the wedge 67, that is, in a direction from right to left, the top surface slopes 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 67, that is, the rocker 68 is inclined in the same direction as the top surface, and the left end of the rocker 68 is located on the left side of the wedge 67 and is rotatably connected to the first folding body 10, that is, the left end of the rocker 68 is rotatable with respect to the first folding body 10. Also, the rocker 68 is slidably connected to the top surface, that is, the rocker 68 is movable along the top surface. The left end of the amplifying module is fixedly connected to the right side surface of the wedge 67, so that the shape memory alloy wire 611 drives the pulley 612 to drive the amplifying module 62 to move rightward when being contracted and deformed, thereby driving the wedge 67 to move rightward along the rocker 68, further driving the rocker 68 to rotate (clockwise) toward the wedge 67, so that the first magnetic member 30 moves (shown as moving downward) away from the second magnetic member 40, and thus the first magnetic member 30 is away from the second magnetic member 40 and moves to a position where the first magnetic member and the second magnetic member do not attract each other, so that the first folding main body 10 can be unfolded relative to the second folding main body 20. Wherein, the first magnetic member 30 can be fixed on the upper surface of the rocker 68 by means of adhesion, clamping, etc.

Specifically, rocker 68 and top surface sliding connection can set up the slider on the top surface, can set up the spout that matches with the slider on the rocker 68, and the slider inlays and locates in the spout to make voussoir 67 can follow rocker 68 and remove, of course, can also adopt the gyro wheel area body slider, and the slide rail area body spout, the gyro wheel removes in the slide rail.

It should be noted that the top surface may also be lowered from left to right, i.e. the right side of the top surface is lower than the left side of the top surface, in which case the amplification module 62 and the driving module 61 may be located at the left side of the wedge 67, the left end of the rocker 68 may be located at the upper left side of the top surface of the wedge 67, and the movement process of the first magnetic member 30 is the reverse of the illustrated example.

In an embodiment of the present application, the driving mechanism further includes: a first elastic member 69; the rocker 68 is rotatably connected to the first folding body 10 by a first elastic member 69; the surface of the rocker 68 close to the wedge 67 is matched with the top surface, and under the condition that the shape memory alloy wire 611 drives the wedge 67 to move, the first elastic piece 69 pulls the rocker 68 to rotate, so that the rocker 68 is tightly attached to the top surface.

Since the spring has the advantages of easy variability, large elasticity, low price, and the like, the first elastic element 69 of the present embodiment is preferably a spring, but is not limited to this, and may also be a spring plate or other elastic elements, which is not limited in the present embodiment, and the first elastic element 69 is described below by taking the first spring as an example.

Specifically, the first spring is located between the left end of the rocker 68 and the wedge 67, and 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., the housing thereof), so that the first spring is deformed when the rocker rotates relative to the first folding body 10. The surface of the rocker 68 adjacent to the wedge 67 (the lower surface as shown) matches the top surface of the wedge 67, and in practice the shape of the lower surface of the rocker 68 matches the shape of the top surface. As shown in fig. 1, in the case where the first folding body 10 is folded with respect to the second folding body 20, the first spring is in a stretched state, so that the first spring can pull the rocker 68 to rotate clockwise when the shape memory alloy wire 611 drives the wedge 67 to move rightward, so that the rocker 68 is always in close contact with the top surface of the wedge 67.

In an alternative embodiment of the present application, as shown in fig. 1 and 2, the amplification module 62 includes a scissor mechanism 624; the scissors mechanism 624 and the pulley 612 are arranged side by side, the scissors mechanism 624 can extend or retract, in the extension direction of the scissors mechanism 624, one end of the scissors mechanism 624 is fixedly connected with the first folding main body 10, the other end of the scissors mechanism 624 is connected with the wedge 67, and the pulley 612 is fixedly connected with the scissors mechanism 624; the shape memory alloy wire 611 drives the pulley 612 to drive the scissors mechanism 624 to contract, and further drives the wedge 67 to move.

Specifically, as shown in fig. 1 and 2, the extending and retracting direction of the scissors mechanism 624 is the illustrated left-right direction, and in the left-right direction, one end (the illustrated right end, that is, the end far from the first magnetic material) of the scissors mechanism 624 is fixedly connected to the first folding body 10 (for example, the housing of the first folding body), and the other end (the illustrated left end, that is, the end near the first magnetic material) is fixedly connected to the right side surface of the wedge 67. The pulley 612 is fixedly connected with the scissors mechanism 624, when the shape memory alloy wire 611 contracts and deforms, the pulley 612 is driven to drive the scissors mechanism 624 to contract (from fig. 1 to fig. 2), the contraction of the scissors mechanism 624 drives the wedge 67 to move rightwards, so that the rocker 68 is driven to rotate clockwise, and the first magnetic member 30 is driven to move downwards, so that the first magnetic member 30 and the second magnetic member 40 are not attracted to each other, and a user can easily unfold the folding screen mobile phone, or the folding screen mobile phone is automatically unfolded.

As shown in fig. 1 and fig. 2, the scissors mechanism 624 includes a plurality of sets 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 comprises two scissor arms 6251, the two scissor arms 6251 are pivoted through a pivot, and the ends of the opposite scissor arms 6251 in the two adjacent telescopic units 625 are pivoted with each other; the first rotating shaft 626 is located on a side of the first telescopic unit of the scissors mechanism 624 away from the wedge 67, and is fixedly connected to the first folding main body 10, one end of each of the two first connecting arms 628 is pivotally connected to the first rotating shaft 626, and the other end is pivotally connected to an end of each of the two scissors arms 6251 of the first telescopic unit away from the first magnetic element 30; the second rotating shaft 627 is located on one side of the second telescopic unit of the scissor mechanism 624 close to the wedge block 67, and is fixedly connected with the wedge block 67, one end of each of the two second connecting arms 629 is pivoted with the second rotating shaft 627, and the other end of each of the two second connecting arms 629 is pivoted with the end of each of the two scissor arms 6251 of the second telescopic unit close to the first magnetic element 30; the pulley is fixedly sleeved on a 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 scissor mechanism 624 to the wedge block 67, the first telescopic unit is the first telescopic unit 625 of the scissor mechanism 624, and the second telescopic unit is the last telescopic unit 625 of the scissor mechanism 624.

Specifically, referring to fig. 5, the scissors mechanism 624 includes a plurality of sets of telescopic units 625, each set of telescopic units 625 includes two scissors arms 6251, two scissors arms 6251 are pivoted by a pivot, that is, two scissors arms 6251 are rotatable around the pivot, ends of the opposite scissors arms 6251 in two adjacent telescopic units 625 are pivoted with each other, and in practice, ends of the opposite scissors arms 6251 in two adjacent telescopic units 625 are also pivoted by a pivot, that is, ends of the opposite scissors arms 6251 in two adjacent telescopic units 625 are pivoted around the pivot. As shown in fig. 1 and 2, two sets of telescopic units 625 are shown, and the left ends of the two scissors arms 6251 in the first telescopic unit are pivotally connected to the corresponding right ends of the two scissors arms 6251 in the second telescopic unit from the scissors mechanism 624 to the wedge 67, i.e., from right to left in the drawing.

Specifically, the first rotating shaft 626 is located on a side of the first telescopic unit of the scissors mechanism 624 away from the wedge 67, i.e., on a right side of the first telescopic unit, and the first rotating shaft 626 is fixedly connected to the first folding body (e.g., a housing thereof). One end of each of the two first connecting arms 628 is pivotally connected to 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 can rotate relative to the first rotating shaft 626. The left ends of the two first connecting arms 628 are pivotally connected to the right ends of the two scissor arms 6251 of the first telescopic unit, in practice, the left end of one first connecting arm 628 (e.g. upper) and the right end of one scissor arm 6251 of the first telescopic unit (e.g. upper) are respectively sleeved on a pivot and both rotate relative to the pivot, and similarly, the left end of the other first connecting arm 628 (e.g. lower) and the right end of the other scissor arm 6251 of the first telescopic unit (e.g. lower) are respectively sleeved on a pivot and both rotate relative to the pivot.

Specifically, the second rotating shaft 627 is located at a side of the second telescopic unit of the scissors mechanism 624 close to the wedge 67, that is, at a left side of the second telescopic unit, and the second rotating shaft 627 is fixedly connected with a right side surface of the wedge 67. One end of each of the two second connecting arms 629 is pivotally connected to the second rotating shaft 627, that is, the left ends of the two second connecting arms 629 are respectively sleeved on the second rotating shaft 627 and can rotate relative to the second rotating shaft 627. The right ends of the two second connecting arms 629 are pivotally connected 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 (e.g. upper) and the left end of one scissor arm 6251 of the second telescopic unit (e.g. upper) are respectively sleeved on a pivot and both rotate relative to the pivot, and similarly, the right end of the other second connecting arm 629 (e.g. lower) and the left end of the other scissor arm 6251 of the second telescopic unit (e.g. lower) are respectively sleeved on a pivot and both rotate relative to the pivot.

Specifically, as shown in fig. 1 and fig. 2, the pulley 612 is fixedly sleeved on the pivot in the first telescopic unit, so that when the shape memory alloy wire 611 is deformed due to contraction, the pulley 612 is driven to drive each telescopic unit 625 to contract (two adjacent telescopic units 625 are close to each other), thereby driving the wedge 67 to move rightward, and further driving the first magnetic member 30 to move downward.

It should be noted that the distance that the pulley 612 can move rightward under the traction force of the shape memory alloy wire 611 is S, where S is L × n, L represents the length of the movable wire 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 enlarges the movement distance S of the shape memory alloy wire 611 by a magnification factor of 2n (n is the number of the telescopic units 625), and generates a driving displacement of S × 2 n.

In the embodiment of the present application, as shown in fig. 1 and fig. 2, the electronic device further includes: a fixing member 70 and a first connecting member 110; the fixing piece 70 is positioned at one end of the scissors mechanism 624, which is far away from the wedge 67, and is fixedly connected with the first folding main body, and one end of the scissors mechanism 624 is fixed on the fixing piece 70; the first connecting piece 110 is located between the other end of the scissors mechanism 624 and the wedge 67, one end of the first connecting piece 110 is fixedly connected with the other end of the scissors mechanism 624, and the other end is fixedly connected with the wedge 67.

Illustratively, as shown in fig. 1 and 2, the fixing member 70 is located at the right side of the right end of the scissors mechanism 624, the lower end of the fixing member 70 is fixedly connected with the first folding body (e.g., the housing thereof), and the first rotating shaft 626 in the scissors mechanism 624 is fixed to the upper end of the fixing member 70 to connect the right end of the scissors mechanism 624 with the first folding body 10. The fixing member 70 may have other structures such as a plate structure and a column structure, and the structure may be set according to actual conditions.

Illustratively, as shown in fig. 1 and 2, the first connecting element 110 is located between the left end of the scissors mechanism 624 and the wedge 67, the left end of the first connecting element 110 is fixedly connected to the right side surface of the wedge 67, and the right end of the first connecting element 110 is fixedly connected to the second rotating shaft 627 of the scissors mechanism 624 so as to be fixedly connected to the left end of the scissors mechanism 624. The first connecting member 110 is made of a tensionable and inelastic material, such as a rope or a metal rod.

In the embodiment of the present application, as shown in fig. 1 and 2, the driving mechanism further includes: a reset module 63; the resetting module 63 is positioned on one side of the wedge 67 close to the amplifying module 62, one end of the resetting module 63 is connected with the wedge 67, and the other end is fixedly connected with the first folding main body 10; the reset module 63 is compressed while the shape memory alloy wire 611 drives the first magnetic member 30 to move, and the reset module 63 resets when the shape memory alloy wire 611 is powered off, so as to drive the first magnetic member 30 to move to the original position.

Specifically, the reset block 63 is located between the right side of the wedge 67 and the fixing member 70, one end (left end in the drawing) of the reset block 63 is fixedly connected to the right side surface of the wedge 67 to be connected to the first magnetic member 30, and the other end (right end in the drawing) of the reset block 63 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 connection plate may also be disposed between the fixing element 70 and the reset module 63, and the connection plate is fixedly connected to the first folding main body 10, in this case, the right end of the reset module 63 is fixedly connected to the left side surface of the connection plate, wherein a preset distance exists between the connection plate and the fixing element 70, and the preset distance may be 1mm, 2mm, and the like, and specifically may be determined according to the magnitude of the driving force required by the reset module 63 to drive the first magnetic element 30 to move to the home position, and in the illustration, the right end of the reset module 63 is fixed to the fixing element 70, so that the driving mechanism 60 may have a simpler structure, and may also save a certain cost.

From fig. 1 to fig. 2, when the shape memory alloy wire 611 is deformed in a shrinkage manner, the pulley 612 drives the scissors mechanism 624 to shrink, so as to drive the wedge 67 to move rightwards, in the process, the wedge 67 presses the reset module 63, and the reset module 63 is compressed; in the process that the shape memory alloy wire 611 stops contracting and deforming and returns to the original shape under the condition that the power is cut off, the resetting module 63 resets and drives the wedge 67 to move to the left to the original position (from fig. 2 to fig. 1), so that the wedge 67 is driven to move to the left to the original position, and the rocker 68 is driven to rotate counterclockwise, so that the first magnetic element 30 moves upwards to the original position. In addition, the reset of the scissors mechanism 624 can drive the pulley to move to the left, so that the shape memory alloy wire 611 can be quickly restored to the original shape.

It should be noted that, under the condition that the first folding main body 10 is hinged to the second folding main body 20 and the shape memory alloy wire 611 is powered off, the first magnetic member 30 moves towards the second magnetic member 40, the distance between the two magnetic members decreases gradually, the magnetic attraction between the first magnetic member 30 and the second magnetic member 40 increases gradually, and when the magnetic attraction is larger than the resilience between the display screens of the folding screen mobile phone, the two folding main bodies are automatically attracted. For example, when the user rotates the first folding main body 10 to a preset distance toward the second folding main body 20, the magnetic attraction may cause the two folding main bodies to automatically attract each other, thereby further improving the user experience.

As shown in fig. 1 and 2, the reset module 63 includes a second elastic member 631, one end of the second elastic member 631 is fixedly connected with the wedge 67, and the other end is fixedly connected with the first folding body 10; the second elastic member 631 is compressed while the first magnetic member 30 is moved by the shape memory alloy wire 611, and the second elastic member 631 is reset when the shape memory alloy wire 611 is deenergized.

Since the spring has the advantages of easy variability, large elasticity, low price, and the like, the second elastic member 631 of the present embodiment is preferably a spring, but is not limited thereto, and may also be a hollow silicone cylinder, a side wall of the silicone cylinder is corrugated, or other elastic members, which is not limited in the present embodiment, and the second elastic member 631 is described below by taking the second spring as an example.

Specifically, as shown in fig. 1 and 2, the reset module 63 includes a second spring, a left end of which is fixedly connected to a right side surface of the wedge 67, and a right end of which 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, the pulley 612 is driven to drive the scissor mechanism 624 to contract, so that the wedge 67 is driven to move rightwards, in the process, the wedge 67 extrudes the second spring, and the second spring is compressed to store energy; under the condition that the power of the shape memory alloy wire 611 is cut off, the shape memory alloy wire 611 stops contracting and deforming and recovers to the original shape, and in the process, the energy-accumulating second spring releases energy to reset and drives the wedge 67 to move to the original position leftwards (from fig. 2 to fig. 1), so that the rocker 68 is driven to rotate anticlockwise, and the first magnetic member 30 is driven to move upwards to the original position. In addition, the reset of the scissors mechanism 624 can drive the pulley 612 to move leftward, so that the shape memory alloy wire 611 can be restored to the original shape quickly.

It should be noted that the reset module 63 in the drawings includes a second elastic member 631, and based on this, a second elastic member 631 may be further provided, the two second elastic members 631 are opposite (vertically arranged in the drawings), and the left end of the added second elastic member 631 is fixedly connected to the right side surface of the wedge 67, and the right end is fixedly connected to the fixing member 70. After the power of the shape memory alloy wire 611 is cut off, the two second elastic members 631 can more quickly drive the first magnetic member 30 to return to the original position, and more quickly prepare for the next folding of the folding screen mobile phone, so that the use experience of a user is improved.

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.

In another alternative embodiment of the present application, as shown in fig. 3 and 4, the amplification module 62 may comprise a set of movable pulleys; the movable pulley block can move and rotate relative to the first folding main body 10, the pulley 612 is connected with the movable pulley block, a pull rope 622 is wound on the movable pulley block, one end of the pull rope 622 is fixedly connected with the first folding main body 10, and the other end of the pull rope 622 is fixedly connected with the first magnetic part 30; the shape memory alloy wire 611 can drive the pulley 612, which drives the movable pulley block and thus the wedge 67.

Illustratively, from fig. 3 to 4, the shape memory alloy wire 611 drives the movable pulley block to move and rotate when the contraction deformation is generated and moves to the right, so as to drive the pull rope 622 to move on the movable pulley block, so that the pull rope 622 drives the wedge 67 to move to the right.

As shown in fig. 2 and 3, the movable pulley block includes: at least one movable pulley 621; when the number of the movable pulleys 621 is one, the movable pulleys 621 are fixedly connected with the pulley 612, and the other ends of the movable pulleys 621 are fixedly connected with the wedge block 67; when the number of the movable pulleys 621 is at least two, the at least two movable pulleys 621 are arranged at intervals, the movable pulley 621 close to the pulley 612 is fixedly connected with the pulley 612, the other end of the pull rope 622 on the movable pulley 621 close to the wedge 67 is fixedly connected with the wedge 67, and the other ends of the pull ropes 622 on other movable pulleys 621 are respectively fixedly connected with 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.

In one embodiment, if the movable pulley block comprises a movable pulley 621, the movable pulley 621 is fixedly connected to the pulley 612 wound with the shape memory alloy wire 611, a pulling rope 622 is wound on the movable pulley 621, one end of the pulling rope 622 is fixedly connected to the first folding main body 10, and the other end of the pulling rope 622 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 is movable and rotatable relative to the first folding body 10, when the shape memory alloy wire 611 is deformed to move rightward, the driving pulley 612 moves the movable pulley 621 to move rightward and rotate, and during this process, the pulling rope 622 on the movable pulley 621 moves on the movable pulley 621 to move the wedge 67 to move rightward.

In another embodiment, if the movable pulley block comprises at least two movable pulleys 621, as shown in fig. 3-4, for example, 3 movable pulleys 621 are shown, and the 3 movable pulleys 621 are arranged side by side and spaced apart. A pulling rope 622 is wound around each movable pulley 621, each pulling 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 main body 10, the other end of the pulling rope 622 on the leftmost movable pulley 621 (the movable pulley 621 close to the wedge 67) is fixedly connected to the right side surface of the wedge 67, the other ends of the pulling ropes 622 on the other two movable pulleys 621 are fixedly connected to the movable pulleys 621 close thereto, that is, the other end of the pulling rope 622 on the leftmost movable pulley 621 is fixedly connected to the other end of the pulling rope 622 on the middle movable pulley 621, the other end of the pulling rope 622 on the middle movable pulley 621 is fixedly connected to the rightmost movable pulley 621, the leftmost movable pulley 621 is fixedly connected to the pulley 612 around which the shape memory alloy wire 611 is wound, and since each movable pulley 621 can move and rotate relative to the first folding main body 10, when the shape memory alloy wire 611 is deformed by contraction and moves to the right, the driving pulley 612 drives the leftmost movable pulley 621 to move to the right and rotate, in the process, the pulling rope 622 on the rightmost movable pulley 621 moves thereon to drive the middle movable pulley 621 to move to the right and rotate, in the process, the pulling rope 622 on the middle movable pulley 621 moves thereon to drive the leftmost movable pulley 621 to move to the right and rotate, and in the process, the pulling rope 622 on the leftmost movable pulley 621 moves thereon to drive the wedge 67 to move to the right.

It should be noted that, as for the number of the movable pulleys 621, this embodiment may not be limited to this, and may be specifically set according to actual requirements. As compared with fig. 3 and 4, the lengths of the ropes 622 on both sides of each movable pulley 621 vary, and in fig. 4, the length of the rope 622 on the upper side of each movable pulley 621 becomes shorter than that in fig. 3, and the shortened part moves to the lower side of the movable pulley 621. The fixed connection between one end of the pulling rope 622 and the first folding main body 10 and the fixed connection between the other end of the pulling rope 622 and the movable pulley 621/wedge 67 may be implemented as follows: one of them can be selected for use in this embodiment, and specific needs are selected as the case requires, through bonding, connecting through the fastener, through the fastener etc.

As shown in fig. 2 and 3, the driving module 61 further includes: the fixed shaft 613, the movable pulley block also include at least one third spindle 623, there are at least one concrete chute 100 on the first folding body 10, a movable pulley 621 corresponds to a third spindle 623 and a concrete chute 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, and the third rotating shaft 623 and the fixed shaft 613 are fixedly connected and movably disposed in the sliding chute 100 respectively; when there are at least two movable pulleys 621, each movable pulley 621 is fixedly sleeved on the corresponding third rotating shaft 623, each third rotating shaft 623 is movably disposed in the corresponding sliding slot 100, the fixed shaft 613 is movably disposed in the sliding slot 100 corresponding to the movable pulley 621 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 end of the pulling rope 622 on the other movable pulley 621 is fixedly connected to the third rotating shaft 623 corresponding to the adjacent movable pulley 621.

In one embodiment, when the movable pulley block includes one movable pulley 621, the number of the sliding groove 100 and the third rotating shaft 623 is also one. The slide 100 is disposed in the direction in which the wedge 67 moves, i.e., the left-right direction as shown, and the third rotating shaft 623 is located in the slide 100 and is movable in the slide 100. The movable pulley 621 is sleeved on the third rotating shaft 623 and is fixedly connected to the third rotating shaft 623, the fixed shaft 613 is also located in the sliding slot 100 and can move in the sliding slot 100, the pulley 612 is sleeved on the fixed shaft 613 and is fixedly connected to the fixed shaft 613, so that the shape memory alloy wire 611 drives the pulley 612 to move when being contracted and deformed, the fixed shaft 613 is driven to move rightwards in the sliding slot 100, the third rotating shaft 623 is driven to move rightwards and rotate, the movable pulley 621 is driven to rotate and drive the pull rope 622 to move, and the wedge block is driven to move rightwards.

In another embodiment, when the movable pulley group includes at least two movable pulleys 621, illustratively, as shown in fig. 2 and 3, 3 movable pulleys 621 are shown, so that the number of the third rotating shaft 623 and the sliding chute 100 is also 3, and one movable pulley 621 corresponds to one third rotating shaft 623 and one sliding chute 100. The 3 sliding chutes 100 are arranged at intervals in the left-right direction, and the distance between two adjacent sliding chutes 100 in this embodiment may not be limited, and may be specifically set according to actual conditions. The 3 movable pulleys 621 are respectively sleeved on the corresponding third rotating shafts 623 and are fixedly connected to the corresponding third rotating shafts 623, so that the 3 movable pulleys 621 respectively drive the other pull ropes 622 to move when rotating. Each third rotating shaft 623 is located in the corresponding sliding slot 100 and can move in the corresponding sliding slot 100. The pulley 612 is sleeved on the fixed shaft 613 and is fixedly connected to the fixed shaft 613, and the fixed shaft 613 is located in the sliding slot 100 corresponding to the leftmost movable pulley 621 and can move in the sliding slot 100. Moreover, 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 pulling rope 622 (abbreviated as rightmost pulling rope 622) on the rightmost movable pulley 621 is fixedly connected to the third rotating shaft 623 corresponding to the middle movable pulley 621, the other end of the pulling rope 622 (abbreviated as middle pulling rope 622) on the middle movable pulley 621 is fixedly connected to the third rotating shaft 623 corresponding to the leftmost movable pulley 621, so that the right movement of the fixed shaft 613 can drive the rightmost third rotating shaft 623 to rotate, so as to drive the rightmost movable pulley 621 to rotate, so as to drive the rightmost pulling rope 622 to move, the pulling 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, so as to drive the middle pulling rope 622 to move, the pulling rope 622 drives the leftmost third rotating shaft 623 to rotate, and the leftmost third rotating shaft 623 drives the leftmost movable pulley 621 to rotate, to move the leftmost pull cord 622 and thereby wedge 67 to the right. In summary, the arrangement of the chute 100 can make the pulley 612 and the movable pulley 621 move more smoothly, so that the wedge 67 moves more smoothly.

It should be noted that, as shown in fig. 2 and 3, from the physical point of view, each movable pulley 621 belongs to the category of the pulling axis of the movable pulley 621, and the moving distance of the pulling rope 622 on one movable pulley 621 is 2 times of the moving distance of the third rotating shaft 623, so that the displacement of the shape memory alloy wire 611 during deformation is amplified to satisfy the displacement required for moving the wedge 67 to the set position. The distance that the pulley 612 can move rightwards along the chute 100 under the traction force of the shape memory alloy wire 611 is S, the movable pulley block amplifies the moving distance S generated by the contraction of the shape memory alloy wire 611 by a magnification factor of 2m (m is the number of the movable pulleys 621), and the generated driving displacement is S x 2 m.

It should be noted that, in order not to affect the rotation of the movable pulley 621, a certain distance is provided between the fixed shaft 613 and the third rotating shaft 623 (the rightmost third rotating shaft 623), and the distance is set according to practical situations. Further, the sliding groove 100 for accommodating the fixed shaft 613 (referred to as the first sliding groove 100) and the sliding groove 100 for accommodating the third rotating shaft 623 (the rightmost third rotating shaft 623) (referred to as the second sliding groove 100) may not be the same sliding groove 100, and the first sliding groove 100 and the second sliding groove 100 may be arranged side by side and at an interval.

As shown in fig. 3 and 4, the fixing shaft 613 is fixedly connected to the rightmost third rotating shaft 623 through the second connecting member 120, and the second connecting member 120 may be made of alloy, plastic, or other materials, and may be specifically set according to actual requirements, which is not limited in this embodiment.

As shown in fig. 3 and 4, the resetting module 63 is located between the amplifying module 62 and the wedge block, and has a predetermined distance from the amplifying module 62, one end of the resetting 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 may be 1mm, 2mm, or the like, which may not be limited in this embodiment, and may be specifically set according to actual requirements.

Specifically, as shown in fig. 3, when the shape memory alloy wire 611 is subjected to telescopic deformation under the condition of power-on, the driving pulley 612 drives the rightmost movable pulley 621 to move rightmost and rotate, so as to drive the rightmost pull rope 622 to move, the rightmost pull rope 622 drives the middle movable pulley 621 to move and rotate, so as to drive the middle pull rope 622 to move, the middle pull rope 622 drives the leftmost movable pulley 621 to move and rotate, so as to drive the leftmost pull rope 622 to move, so as to drive the first magnetic member 30 to move rightmost, at this time, the wedge block presses the reset module 63, and the reset module 63 is compressed; after the power of the shape memory alloy wire 611 is cut off, the shape memory alloy wire 611 stops shrinking and deforming and recovers to the original shape, in the process, the resetting module 63 resets to drive the wedge 67 to move leftwards to the original position (from fig. 4 to fig. 3); and, the wedge can drive the leftmost stay cord 622 to move, thereby driving the leftmost movable pulley 621 to move leftward, the leftmost movable pulley 621 drives the middle stay cord 622 to move, thereby driving the middle movable pulley 621 to move leftward, the middle movable pulley 621 drives the rightmost stay cord 622 to move, thereby driving the rightmost movable pulley 621 to move leftward, and further driving the pulley to move leftward, so as to enable the shape memory alloy wire 611 to restore to the original state quickly.

As shown in fig. 3 and 4, in the present embodiment, a fixing plate 66 may be disposed between the amplifying module 62 and the first magnetic member 30, and has a predetermined distance from the amplifying module 62, and the fixing plate 66 is fixedly connected to the first folding body 10; compared with fig. 1 and 2, a second elastic member 631 (a second spring is shown) in the reset module 63 is located between the fixed plate 66 and the wedge, and a right end of the second elastic member 631 is fixedly connected to the fixed plate 66.

As shown in fig. 3 and 4, when the shape memory alloy wire 611 generates a contraction deformation and moves to the right, the wedge 67 is driven to move to the right, in the process, the wedge 67 presses the second spring, and the second spring is compressed to store energy; after the power of the shape memory alloy wire 611 is cut off, the shape memory alloy wire 611 stops contracting and deforming and recovers to the original shape, in the process, the energy-stored second spring releases energy to drive the wedge 67 to move leftwards, so that the first magnetic component 30 can move to the original position, namely, the two magnetic components can attract each other to prepare for the next folding of the folding screen mobile phone, and in the process, the first magnetic component 30 can drive the shape memory alloy wire 611 to recover to the original shape quickly.

As shown in fig. 3 and 4, a preset distance exists between the fixed plate 66 and the leftmost movable pulley 621 in the movable pulley block to avoid affecting the rotation of the movable pulley 621, and a specific value of the preset distance may be 1mm, 2mm, or the like. In the illustration, the other end of the pulling rope 622 on the leftmost movable pulley 621 may be fixed to the fixed plate 66 to be fixedly connected to the first folding body 10.

In the embodiment of the present application, as shown in fig. 1 to 4, the electronic device further includes: a power supply and conductive clip 80; the wire clip 80 is located on one side of the pulley 612 far away from the first magnetic member 30, one end of the wire clip 80 is fixedly connected with the first folding main body 10, the other end of the wire clip 80 is connected with the shape memory alloy wire 311, and the power supply supplies power to the shape memory alloy wire 611 through the wire clip 80, so that the shape memory alloy wire 611 is deformed.

In practice, the clamp 80 is a metal attachment made of iron or aluminum that can be fixed to the wire, and most of them are subjected to a large pulling force during operation, and some of them are kept in good electrical contact. Specifically, when the shape memory alloy wire 611 is fixed, the present embodiment clamps the shape memory alloy wire 611 by the wire clamp 80. As shown in fig. 1 to 4, the present embodiment provides two wire clamps 80 on the right side of the pulley 612, and the two wire clamps 80 are oppositely disposed. One ends of the two wire clamps 80 are respectively fixed in the first folded body 10, and the other ends are respectively connected with 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 the other wire clamp 80. Because the clips 80 are electrically conductive, one clip 80 can be connected to the positive pole of the power source and the other clip 80 can also be connected to the negative pole of the power source, such that the shape memory alloy wire 611, the power source, and the two clips 80 form a closed circuit. In the event that the power source is powered, it may power the shape memory alloy wire 611 to energize the shape memory alloy wire 611, thereby deforming the shape memory alloy wire 611.

In this embodiment, the electronic device may further include a trigger module 50 and a controller, the controller is electrically connected to the trigger module 50 and the power supply, respectively, the trigger module 50 is configured to generate a trigger signal in response to a user operation when the first folding body 10 is folded with respect to the second folding body 20, and the controller is configured to control the power supply to be powered on when the trigger signal is acquired, so as to energize the shape memory alloy wire 611.

Specifically, the triggering module 50 may be disposed on the first folding body 10 and/or the second folding body 20, and the triggering module 50 is disposed on the second folding body 20. The trigger module 50 is configured to generate a trigger signal in response to a user operation. When the first folding body 10 is folded with respect to the second folding body 20, that is, when the folding screen mobile phone is in a folded state, if a user wants to open the folding screen mobile phone, an operation may be initiated. The user operation includes but is not limited to actions of pressing, touching, dialing and the like which need to contact the folding screen mobile phone, and operations of sending voice commands, preparing for shooting and the like which do not need to contact the folding screen mobile phone. The trigger module 50 of the folding screen mobile phone can comprise a key module, a fingerprint identification module, a voice input module and an image acquisition module.

Specifically, the key module may be mounted on the second folding main body 20, and has a contact surface exposed out of the second folding main body 20, and when the folding screen mobile phone is folded, a user may contact the contact surface to trigger the key module to generate the trigger signal. The key module can be a power key or a volume key on a folding screen mobile phone or a specially designed key for pressing or dialing. The key module may also be mounted on the first folding main body 10, or mounted on the first folding main body 10 and the second folding main body 20, and the specific mounting position of the key module may not be limited in this embodiment, and is specifically set according to the actual situation.

Specifically, the fingerprint identification module can be installed on second folding main part 20, and has the contact surface that exposes in second folding main part 20, and when folding screen cell-phone was folding, the user can contact this contact surface to trigger the fingerprint identification module and generate trigger signal. The trigger signal that the fingerprint identification module generated carries user's fingerprint information. The fingerprint identification module can also be installed on the first folding main body 10, or on the first folding main body 10 and the second folding main body 20, and for the specific installation position of the fingerprint identification module, this embodiment may not be limited thereto, and the specific installation position is specifically set according to the actual situation.

Specifically, the image capturing module may be installed in the second folding main body 20, and is configured to capture image information of the user, where the image information may be iris information of the user, or portrait information captured when the user performs self-photographing, and a trigger signal generated by the image capturing module carries the image information of the user. The image capturing module may also be installed in the first folding main body 10, or in the first folding main body 10 and the second folding main body 20, and the specific installation position of the image capturing module may not be limited in this embodiment, and is specifically set according to the actual situation.

Specifically, a voice input module may be installed in the second folding main body 20 for collecting a voice command of the user. The voice input module includes, but is not limited to, a microphone. The trigger signal generated by the voice input module carries the voice information of the user. The voice input module may also be installed in the first folding main body 10, or in the first folding main body 10 and the second folding main body 20, and the specific installation position of the voice input module may not be limited in this embodiment, and is specifically set according to the actual situation.

In practical applications, in a case where the first folding body 10 is folded with respect to the second folding body 20, that is, when the folding-screen mobile phone is in a folded state, if a user wants to open the folding-screen mobile phone, an operation may be initiated. The trigger module 50 generates a trigger signal in response to a user-initiated operation, and sends the trigger signal to the controller. When the controller acquires the trigger signal, the controller controls the power supply to be powered on, so that the closed loop is conducted, the shape memory alloy wire 611 is powered on to generate contraction deformation, the wedge 67 is driven to move rightwards, and the first magnetic piece is driven to move back to the second magnetic piece, so that the first folding main body 10 can be unfolded relative to the second folding main body 20.

In this embodiment, as shown in fig. 2, the electronic device further includes: a temperature sensor 90; the temperature sensor 90 is mounted on the first folding body 10, and is used for detecting and transmitting a temperature value of the shape memory alloy wire 611; the controller is electrically connected to the temperature sensor 90, and is configured to control the shape memory alloy wire 611 to power off when the obtained temperature value exceeds a preset temperature value.

Specifically, the temperature sensor 90 is fixed in the first folded body 10, and detects a temperature value of the shape memory alloy wire 611 to transmit to the controller. When the controller obtains the temperature value, the temperature value is compared with a preset temperature value, and if the obtained temperature value exceeds the preset temperature value, the shape memory alloy wire 611 is controlled to be powered off, so that the situation that other parts in the electronic equipment are damaged due to abnormality of the shape memory alloy wire 611 in the power-on process is avoided. Wherein, according to the performance of the shape memory alloy wire 611, a preset temperature value is stored in the controller in advance. In addition, in order to make the temperature sensor 90 more accurately detect the temperature value of the shape memory alloy wire 611, the temperature sensor 90 is provided in the first folded body 10 at a position close to the temperature sensor 90.

The electronic device may further include a first sensor fixed in the first folding body 10, the first sensor being electrically connected to the controller and configured to detect whether the first magnetic member 30 moves to a preset position, where the preset position may be a position where the magnetic attraction force between the first magnetic member and the second magnetic member is zero (substantially) due to the phase shift of the first magnetic member, and if so, send a position signal to the controller. When the controller acquires the position signal, the shape memory alloy wire 611 is controlled to be powered off, the shape memory alloy wire 611 stops contracting and deforming and recovers towards the original shape, in the process, the energy stored by the spring releases energy to drive the first magnetic part 30 to move leftwards, so that the first magnetic part 30 can move to the original position, namely, the position where the two magnetic parts attract each other, and preparation is made for the next folding of the folding screen mobile phone.

In practice, the hall sensor may detect whether the hall sensor is located at the preset position through the change of the magnetic field of the first magnetic member 30, and the hall sensor has the advantages of sensitivity to the magnetic field, simple structure, small size, long service life, and the like, so the hall sensor is preferred as the first sensor of this embodiment, and of course, other sensors capable of detecting the position, such as a position sensor or other sensors, may be selected, which is not limited in this embodiment, and may be specifically selected according to actual requirements.

Referring to fig. 6, the first and second

magnetic members

30 and 40 may be halbach arrays, based on which the first magnetic member 30 includes first and

second magnets

31 and 32 alternately arranged, and the first magnet 31 is connected to the second magnet 32, the first magnet 31 having a first magnetic pole, and the second magnet 32 having a second magnetic pole, the first magnetic pole being opposite to the second magnetic pole; the second magnetic member 40 includes third magnets 41 and fourth magnets 42 alternately arranged, the third magnets 41 are connected to the fourth magnets 42, the third magnets 41 have third magnetic poles, the fourth magnets 42 have fourth magnetic poles, the third magnetic poles are opposite to the fourth magnetic poles and are the same as the first magnetic poles, and the fourth magnetic poles are the same as the second magnetic poles; when the first folding body 10 is folded with respect to the second folding body 20, the first magnet 31 and the fourth magnet 42 are positioned to face each other, and the second magnet 32 and the third magnet 41 are positioned to face each other.

Specifically, as shown in fig. 6, the first magnetic member 30 includes a first magnet 31 and a second magnet 32 that are alternately arranged, and the first magnet 31 is connected to the second magnet 32, and the first magnet 31 has a first magnetic pole (e.g., S-pole), and the second magnet 32 has a second magnetic pole (e.g., N-pole), where the first magnetic pole is opposite to the second magnetic pole. The second magnetic member 40 includes third and

fourth magnets

41 and 42 alternately arranged, the third and

fourth magnets

41 and 42 are connected, the third magnet 41 has a third magnetic pole, and 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 S pole, and the fourth magnetic pole is the same as the second magnetic pole (N pole), that is, the fourth magnetic pole is N pole.

As shown in fig. 6, in the left-to-right direction, the magnetic poles of the first magnetic member 30 are S, N, S, N, S in order and the magnetic poles of the second magnetic member 40 are N, S, N, S, N in order, and when the first folding body 10 is folded with respect 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, the first magnet 31 and the second magnet 32 have an attractive force therebetween, so that the first folding body 10 and the second folding body 20 can be stably held in the folded state.

As shown in fig. 6, a straight rod 64 is further connected to the right side (close to the amplifying module 62) of the rocker 68, the straight rod 64 is arranged in the left-right direction, and the 3 rd to 5 th first magnets are fixed on the straight rod in the left-right direction. The rocker 68 and the straight rod 64 may be integrally formed to improve the strength of the rocker 68, and the rocker 68 drives the straight rod 64 to rotate during the rotation process, so that the whole first magnetic member 30 moves simultaneously.

In the prior art, for the driving mechanism 60 for driving the two folding main bodies to unfold, the motor is usually a driving source, the energy consumption of the motor driving the middle transmission mechanism is high, and the electricity waiting time of the rigid whole machine is long.

As shown in fig. 1 to 4, since the driving source of the embodiment is the shape memory alloy wire 611, the shape memory alloy wire 611 can be deformed by being heated instantly, and the displacement generated when the shape memory alloy wire 611 is deformed is amplified by the amplifying module 62 in the embodiment, so that the shape memory alloy wire 611 drives the first magnetic member 30 to move to the preset position within a short power-on duration, the power consumption is low, and the power-on duration of the whole machine is increased.

It should be noted that, the above-mentioned fixed connection between two components means that no relative displacement occurs between the two components, and the implementation manner may be one of bonding, welding, fastener connection, and clamping, and may be specifically selected according to actual conditions.

It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.

While alternative embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including alternative embodiments and all such alterations and modifications as fall within the true scope of the embodiments of the application.

Finally, it should also be noted that, in this document, relational terms such as first and second, and the like may be used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or terminal apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or terminal apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of additional like elements in the article or terminal device comprising the element. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The technical solutions provided in the present application are described in detail above, and the principles and embodiments of the present application are described herein by using specific examples, and meanwhile, for a person of ordinary skill in the art, according to the principles and implementation manners of the present application, changes may be made in the specific embodiments and application ranges.

Claims

1. An electronic device, characterized in that the electronic device comprises: the folding device comprises a first folding body, a second folding body, a first magnetic piece, a second magnetic piece and a driving mechanism;

2. The electronic device of claim 1, wherein the drive module comprises a shape memory alloy wire and a pulley;

the pulley and the amplifying module are both positioned on one side of the first magnetic part, and the pulley is connected with the first magnetic part through the amplifying module;

the shape memory alloy wire is wound on the pulley and deforms under the power-on condition, so that the pulley is driven to drive the amplification module to move.

3. The electronic device of claim 2, wherein the drive mechanism further comprises: a wedge and a rocker;

the wedge block is connected with the driving module through the amplification module and arranged side by side with the amplification module, the wedge block comprises a top surface and a bottom surface which are opposite, the bottom surface is movably arranged on the first folding main body, and the top surface is an inclined surface;

the rocker is connected with the top surface in a sliding manner, and one end of the rocker is rotatably connected with the first folding main body;

the first magnetic piece is fixed on the rocker, the shape memory alloy wire drives the amplification module to drive the wedge block to move, the wedge block moves along the rocker, and the rocker is further driven to rotate, so that the first magnetic piece moves back to the second magnetic piece and is not attracted with the second magnetic piece.

4. The electronic device of claim 3, wherein the drive mechanism further comprises: a first elastic member;

the rocker is rotatably connected with the first folding main body through the first elastic piece, and the surface of the rocker, which is close to the wedge block, is matched with the top surface, so that the rocker is tightly attached to the top surface.

5. The electronic device of claim 3, wherein the amplification module comprises: a scissor mechanism;

the scissor mechanism can extend or contract, one end of the scissor mechanism is fixedly connected with the first folding main body in the telescopic direction of the scissor mechanism, the other end of the scissor mechanism is fixedly connected with the wedge block, and the pulley is fixedly connected with the scissor mechanism;

the shape memory alloy wire drives the pulley to drive the scissor fork mechanism to contract, and further drives the wedge block to move.

6. The electronic device of claim 5, wherein the scissors mechanism comprises a plurality of sets of telescoping 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 which are pivoted through a pivot, and the end parts of the opposite scissor arms in the two adjacent telescopic units are pivoted with each other;

the first rotating shaft is positioned on one side, away from the wedge block, of a first telescopic unit of the scissor mechanism and fixedly connected with the first folding main body, one ends of the two first connecting arms are pivoted through the first rotating shaft, and the other ends of the two first connecting arms are respectively pivoted with the end parts, away from the first magnetic piece, of the two scissor arms of the first telescopic unit;

the second rotating shaft is positioned on one side, close to the wedge block, of a second telescopic unit of the scissor mechanism and fixedly connected with the wedge block, one end of each of the two second connecting arms is pivoted through the second rotating shaft, and the other end of each of the two second connecting arms is respectively pivoted with the end part, close to the first magnetic piece, of each of the two scissor arms of the second telescopic unit;

the pulley is fixedly sleeved on a pivot of the first telescopic unit, the shape memory alloy wire drives the pulley to drive each telescopic unit to contract, wherein the first telescopic unit is the first telescopic unit of the scissors mechanism, and the second telescopic unit is the last telescopic unit of the scissors mechanism in the direction from the scissors mechanism to the wedge block.

7. The electronic device of claim 5, further comprising: the fixing piece and the first connecting piece;

the fixing piece is positioned on one side, far away from the wedge block, of one end of the scissor mechanism and is fixedly connected with the first folding main body, and one end of the scissor mechanism is fixed on the fixing piece;

the first connecting piece is located between the other end of the scissor mechanism and the wedge block, one end of the first connecting piece is fixedly connected with the other end of the scissor mechanism, and the other end of the first connecting piece is fixedly connected with the wedge block.

8. The electronic device of claim 3, wherein the drive mechanism further comprises: a reset module;

the resetting module is positioned on one side, close to the amplifying module, of the wedge block, one end of the resetting module is fixedly connected with the wedge block, and the other end of the resetting module is fixedly connected with the first folding main body;

the reset module is compressed while the shape memory alloy wire drives the first magnetic piece to move, and the reset module resets under the condition that the shape memory alloy wire is powered off so as to drive the first magnetic piece to move to the original position.

9. The electronic device of claim 8, wherein the reset module comprises a second elastic member, one end of the second elastic member is fixedly connected with the wedge, and the other end of the second elastic member is fixedly connected with the first folding body;

the second elastic piece is compressed while the shape memory alloy wire drives the first magnetic piece to move, and the second elastic piece is reset under the condition that the shape memory alloy wire is powered off.

10. The electronic device of claim 2, further comprising: a power supply and a conductive clip;

the wire clamp is located one side of the pulley far away from the first magnetic part, one end of the wire clamp is fixedly connected with the first folding main body, the other end of the wire clamp is connected with the shape memory alloy wire, and the power supply supplies power to the shape memory alloy wire through the wire clamp so that the shape memory alloy wire deforms.