Folding electronic equipment

Abstract

The invention relates to a folding electronic device which comprises a flexible screen, a rotating shaft mechanism and a traction assembly, the flexible screen comprises a bending part, a first connecting part and a second connecting part, the first connecting part and the second connecting part are connected to the two ends of the bending part, and the rotating shaft mechanism is connected with the first connecting part and the second connecting part. The rotating shaft mechanism is used for driving the bending part to move between a flattened state and a folded state, the traction assembly is connected to the side, facing the rotating shaft mechanism, of the flexible screen, and when the flexible screen moves towards the folded state, the rotating shaft mechanism lifts the bending part towards the first connecting part and the second connecting part through the traction assembly. According to the folding type electronic equipment, when the rotating shaft mechanism drives the flexible screen to be folded, the bending part of the flexible screen is lifted through the traction assembly, so that the bending radian of the bending part is smoother by using the traction assembly to lift the bending part while the bending outline of the bending part is reduced to realize miniaturization, and the folding effect of the folding type electronic equipment is improved. Therefore, the probability of creases of the bending part is reduced, and the reliability of the flexible screen is improved.

Description

Technical Field

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

[0002] Foldable electronic devices, because they can be folded for use, further improve portability and are favored by consumers. Foldable electronic devices need to be equipped with a hinge mechanism to meet the needs of folding.

[0003] In the related art, the performance of the flexible screen adopted by the foldable electronic device is easily affected by the hinge mechanism. The flexible screen cannot be folded at will, but needs to be folded at a certain arc to reduce the crease, so a water drop-shaped folding state appears. The water drop-shaped folding state requires the foldable electronic device to form a water drop-shaped screen space at the corresponding bending point of the flexible screen to provide creep and strain space for the laminated structure of the flexible screen.

[0004] However, the bending part of the flexible screen occupies a large space at the corresponding position of the hinge mechanism, which is not conducive to the miniaturization of the hinge mechanism and the bending part of the flexible screen. Reducing the water droplet profile when the flexible screen is folded will cause creases on the flexible screen, which will have a negative impact on the appearance and reliability of the flexible screen. Summary of the invention

[0005] The present application provides a foldable electronic device to solve the technical problem of how to achieve miniaturization while improving the reliability of a flexible screen.

[0006] The present application provides a foldable electronic device, comprising:

[0007] A flexible screen comprises a bending portion and a first connecting portion and a second connecting portion connected to two ends of the bending portion;

[0008] A rotating shaft mechanism connected to the first connecting portion and the second connecting portion, the rotating shaft mechanism being used to drive the bending portion to move between a flattened state and a folded state; and

[0009] The traction assembly is connected to a side of the flexible screen facing the rotating shaft mechanism, and when the flexible screen moves toward the folded state, the rotating shaft mechanism pulls the bending portion toward the first connecting portion and the second connecting portion through the traction assembly.

[0010] In the foldable electronic device of the present application, when the hinge mechanism drives the flexible screen to fold, the bending portion of the flexible screen is lifted by the traction component, so that the bending profile of the bending portion can be reduced to achieve miniaturization. At the same time, the bending arc of the bending portion can be smoother by lifting the bending portion by the traction component, thereby reducing the probability of creases on the bending portion and improving the reliability of the flexible screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 A schematic diagram of a foldable electronic device provided in an embodiment when in a flattened state.

[0013] Figure 2 A schematic diagram of another state of a foldable electronic device provided in one embodiment.

[0014] Figure 3 This is a top view of a foldable electronic device provided in one embodiment, and the dotted line structure in the figure shows the installation position of the hinge mechanism.

[0015] Figure 4 For along Figure 3 Schematic diagram of the cross-sectional structure of line II in FIG.

[0016] Figure 5 for Figure 4 A schematic diagram of the structure of a foldable electronic device in a folded state is shown.

[0017] Figure 6 FIG. 4 is a schematic structural diagram of a foldable electronic device in a folded state according to another embodiment.

[0018] Figure 7 It is a schematic structural diagram of a foldable electronic device in a flattened state according to another embodiment.

[0019] Figure 8 for Figure 7 A schematic diagram of the structure of a foldable electronic device in a folded state is shown.

[0020] Fig. 9 FIG. 4 is a schematic structural diagram of a foldable electronic device in a folded state according to another embodiment.

[0021] Fig.10 The diagram is a schematic diagram of the arrangement positions of the first traction member and the second traction member relative to the buffer pad in a foldable electronic device according to one embodiment.

[0022] Fig.11 The figure is a schematic structural diagram of a first traction member of a foldable electronic device according to one embodiment.

[0023] Fig.12 for Fig.11A schematic diagram of the partial enlarged structure of the first traction member at circle A is shown.

[0024] Reference numerals:

[0025] 100, foldable electronic device; 100a, first connecting member; 100b, second connecting member; 10, middle frame assembly; 12, first shell; 12a, first structural member; 14, second shell; 14a, second structural member; 20, flexible screen; 20a, bending portion; 20b, first connecting portion; 20c, second connecting portion; 20d, third connecting portion; 20e, fourth connecting portion; 30, rotating shaft mechanism; 31, middle plate; 31a, arc groove; 31b, sinking groove; 32, first supporting member; 33, second supporting member; 40, traction assembly; 41, first traction member; 41a, first perforation; 411, traction substrate; 412, traction film; 413, adhesive member; 42, second traction member; 42a, second perforation; 50, buffer pad; 60, support sheet; 60a, first adhesive portion; 60b, second adhesive portion; ZZ, bending axis. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0027] As used herein, "foldable electronic device" refers to, but is not limited to, a device capable of receiving and / or sending communication signals connected via any one or more of the following connection methods: (1) via a wired line connection method, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, direct cable connection; (2) via a wireless interface method, such as a cellular network, a wireless local area network (WLAN), a digital television network such as a DVB-H network, a satellite network, and an AM-FM broadcast transmitter.

[0028] Foldable electronic devices are electronic devices that are configured to communicate via a wireless interface and can be referred to as "mobile terminals". Examples of mobile terminals include, but are not limited to, the following electronic devices: (1) satellite phones or cellular phones; (2) personal communications system (PCS) terminals that can combine cellular radio telephones with data processing, fax, and data communications capabilities; (3) radio telephones, pagers, Internet / intranet access, web browsers, notepads, calendars, personal digital assistants (PDAs) equipped with global positioning system (GPS) receivers; (4) conventional laptop and / or palmtop receivers; (5) conventional laptop and / or palmtop radiotelephone transceivers, etc.

[0029] See also Figure 1 and Figure 2 As shown, a foldable electronic device 100 provided in an embodiment of the present application includes a flexible screen 20 and a hinge mechanism 30. The flexible screen 20 is connected to the hinge mechanism 30, and at least the portion corresponding to the hinge mechanism 30 can be bent. The setting of the hinge mechanism 30 enables the foldable electronic device 100 to be folded or unfolded.

[0030] Combination Figures 3 to 5 As shown, for the convenience of description, when the foldable electronic device 100 is folded for use, the portion of the flexible screen 20 that corresponds to the hinge mechanism 30 and adapts to the bending need is called the "bending portion 20a", and the axis around which the bending portion 20a bends is called the "bending axis ZZ", that is, the bending portion 20a can be bent around the bending axis ZZ.

[0031] The flexible screen 20 includes a first connection part 20b and a second connection part 20c connected to both ends of the bending part 20a. The hinge mechanism 30 is connected to the first connection part 20b and the second connection part 20c, and is used to drive the bending part 20a to move between the flattened state and the folded state.

[0032] Combination Figure 4 and Figure 5As shown, the traction assembly 40 is connected to the side of the flexible screen 20 facing the hinge mechanism 30, and when the flexible screen 20 moves toward the folded state, the hinge mechanism 30 pulls the bending portion 20a toward the first connection portion 20b and the second connection portion 20c through the traction assembly 40. In this embodiment, since the traction assembly 40 can pull the bending portion 20a toward the first connection portion 20b and the second connection portion 20c, that is, the traction assembly 40 will generate a traction force on the bending portion 20a, and the part where the traction force acts on the bending portion 20a will move closer to the first connection portion 20b and the second connection portion 20c, so that the bending portion 20a is deformed and becomes closer to a circle. Based on this, while reducing the bending profile of the bending portion 20a to achieve miniaturization, the lifting of the bending portion 20a by the traction assembly 40 can make the bending arc of the bending portion 20a smoother, thereby reducing the probability of creases on the bending portion 20a, thereby improving the reliability of the flexible screen 20.

[0033] It should be noted that the bending portion 20a is in a teardrop shape when in a folded state. Exemplarily, in some embodiments, the hinge mechanism 30 includes a middle plate 31 and a first support member 32 and a second support member 33 connected to both sides of the middle plate 31, and the first support member 32 and the second support member 33 can rotate relative to the middle plate 31 to flatten or fold the bending portion 20a. When the bending portion 20a is in a folded state, the first support member 32 and the second support member 33 form a storage space with the middle plate 31, and the bending portion 20a is folded in the storage space. In this embodiment, the first support member 32 and the second support member 33 squeeze the flexible screen 20, so that the bending portion 20a is in a teardrop shape.

[0034] When the bent portion 20a is in a flattened state, the first support member 32 and the second support member 33 support the flexible screen 20, so that the flexible screen 20 has good flatness to obtain a good display effect.

[0035] See again Figure 1 and Figure 2 As shown, the foldable electronic device 100 includes a middle frame assembly 10, and the middle frame assembly 10 includes a first shell 12 and a second shell 14. The hinge mechanism 30 is connected between the first shell 12 and the second shell 14, so that the first shell 12 and the second shell 14 can rotate relative to each other. It can be understood that the flexible screen 20 is connected to the first shell 12 and the second shell 14, and the bending portion 20a of the flexible screen 20 covers the hinge mechanism 30 to maintain the overall aesthetic appearance of the foldable electronic device 100. The first shell 12 and the flexible screen 20 can be connected through the first structural member 12a, and the second shell 14 and the flexible screen 20 can be connected through the second structural member 14a. The first structural member 12a and the second structural member 14a can be glue layers or screws, which are not limited here.

[0036] The middle frame assembly 10 forms a receiving cavity (not shown in the figure), and the foldable electronic device 100 may also include a circuit board (not shown in the figure) and a battery (not shown in the figure), and the circuit board and the battery may be arranged in the receiving cavity of the middle frame assembly 10. The circuit board may integrate the processor, power management module, storage unit and baseband chip of the foldable electronic device 100. The flexible screen 20 is communicatively connected to the processor, and the battery can power the flexible screen 20 and the electronic components on the circuit board. In some embodiments, the foldable electronic device 100 may also include a camera module (not shown in the figure), which is communicatively connected to the circuit board, and the battery can power the camera module. It can be understood that the foldable electronic device 100 of the embodiment of the present application includes but is not limited to terminal devices such as mobile phones and tablet computers or other portable foldable electronic devices 100.

[0037] Combination Figure 4 and Figure 5 As shown, the traction assembly 40 includes a first traction member 41 and a second traction member 42 .

[0038] One end of the first pulling member 41 is connected to the first supporting member 32 , and the other end is connected to the bending portion 20 a .

[0039] One end of the second pulling member 42 is connected to the second supporting member 33, and the other end is connected to the bending portion 20a. In this embodiment, the first pulling member 41 and the second pulling member 42 respectively pull the portions of the bending portion 20a corresponding to the two sides of the bending axis ZZ, which can not only realize the change of the bending portion 20a to a circular profile, but also easily balance the forces on both sides of the bending portion 20a, so that the bending portion 20a is not easily biased to one side of the first supporting member 32 or the second supporting member 33 due to uneven force.

[0040] Further, see Figure 5As shown, based on the fact that the bending portion 20a is in a teardrop shape when folded, the point of action of the traction assembly 40 (such as the first traction member 41 and the second traction member 42) applying the lifting force to the bending portion 20a can be located in the lower half of the teardrop shape, so that the first traction member 41 and the second traction member 42 have a better lifting effect on the bending portion 20a. Specifically, the position where the first traction member 41 is connected to the bending portion 20a is located on the side close to the bending vertex G of the widest part MW of the teardrop shape of the bending portion 20a in the folded state. At this time, when the foldable electronic device 100 is folded upward on a vertical plane, the position where the first traction member 41 is connected to the bending portion 20a is located below the widest part MW of the teardrop shape of the bending portion 20a. At this time, the first traction member 41 can better lift the bending portion 42a, so that the bending portion 42a is more inclined to be circular. It should be noted that the widest part MW of the water drop shape refers to the position corresponding to the maximum dimension of the bending portion 20a in the thickness direction of the foldable electronic device 100 in the folded state; correspondingly, the bending vertex G refers to the position corresponding to the minimum dimension of the bending portion 20a in the thickness direction of the foldable electronic device 100 in the folded state, that is, the position of maximum curvature of the bending portion 20a.

[0041] The position where the second traction member 42 is connected to the bending portion 20a is located on the side of the widest part MW of the water drop shape of the bending portion 20a in the folded state, close to the bending vertex G, so that the lifting effect of the second traction member 42 on the bending portion 20a can be improved, so that the bending portion 42a is more inclined to be round. The bending portion 20a is provided with a third connection portion 20d, and the first traction member 41 is connected to the first connection portion 20b and the third connection portion 20d. In this way, during the folding process of the bending portion 20a, the first traction member 41 will bend together. Since the first traction member 41 is located on the side of the bending portion 20a facing the rotating shaft mechanism 30, the first traction member 41 will generate a pulling force to bring the first connection portion 20b and the third connection portion 20d closer to each other, so that the bending portion 20a is deformed accordingly, so that the bending portion 20a can be adjusted from a flat water drop shape to a shape closer to a circle, so as to reduce the probability of creases on the bending portion 20a.

[0042] In this embodiment, the third connection part 20d is the connection position between the first traction member 41 and the bending part 20a, and is also the force point when the first traction member 41 pulls the bending part 20a. Therefore, the third connection part 20d can be set at the position where the bending part 20a is connected, which is located on the side close to the bending vertex G of the widest part MW of the water drop shape of the bending part 20a in the folded state, further improving the lifting effect of the first traction member 41 on the bending part 20a, so that the bending part 42a is more inclined to be rounded. Figure 4As shown, in this embodiment, when the bending portion 20a is in the flattened state, the first traction member 41 and the structural gap between the first connecting portion 20b and the third connecting portion 20d of the bending portion 20a are set. This can not only reduce the probability of the first traction member 41 contacting the bending portion 20a during the bending process, but also even if the first traction member 41 and the bending portion 20a are in contact during the bending process, the existence of the gap between them can also reduce the contact stress when the two are in contact, so as to reduce the probability of damage to the bending portion 20a. In addition, the gap setting between the first traction member 41 and the bending portion 20a can also increase the traction force of the first traction member 41 on the bending portion 20a during the bending process, making it easier to make the bending portion 20a round. For the sake of convenience, here we take the example of the first traction member 41 attached to the surface of the bending portion 20a. Since the gap between the first traction member 41 and the bending portion 20a is almost zero at this time, the deformation amount generated during the bending process of the bending portion 20a is consistent with the first traction member 41. In this way, the traction force generated by the first traction member 41 on the bending portion 20a is zero or close to zero, and the first traction member 41 cannot produce a lifting effect on the bending portion 20a. Accordingly, the first traction member 41 and the bending portion 20a are set to maintain a gap. During the bending process, due to the different bending deformation amounts between the two, the first traction member 41 will produce a lifting effect on the bending portion 20a, making the bending portion 20a rounded and reducing the probability of creases on the bending portion 20a.

[0043] Furthermore, when the bent portion 20a is in a flattened state, the gap between the first traction member 41 and the bent portion 20a is less than or equal to 3 times the thickness of the first traction member 41. Within this gap range, the traction force of the first traction member 41 on the bent portion 20a is appropriate, so that the traction force of the first traction member 41 on the bent portion 20a is not too large, which makes it easy to pull off the bent portion 20a, or even destroy the structure of the bent portion 20a. In addition, under this setting, the traction force of the first traction member 41 on the bent portion 20a is not too small, which makes the deformation of the bent portion 20a not obvious.

[0044] When the bending portion 20a is in the flattened state, the distance between the first connecting portion 20b and the third connecting portion 20d is 1 / 3 to 1 / 2 of the flattened length of the bending portion 20a. The portion of the bending portion 20a between the first connecting portion 20b and the third connecting portion 20d is the main deformation portion under the action of the first traction member 41, and it is set to account for 1 / 3 to 1 / 2 of the flattened length of the bending portion 20a, which not only makes the deformation of the bending portion 20a obvious, but also prevents the bending portion 20a from being damaged by excessive stress.

[0045] It should be noted that, in the present application, the flattened length of the bent portion 20a is the length of the first shell 12 and the second shell 14 of the foldable electronic device 100 in the flattened state, that is, Figure 4 The distance between the two ends of the bending portion 20a in the horizontal direction of the foldable electronic device 100 is shown. Since the two ends of the bending portion 20a are respectively connected to the first connection portion 20b and the second connection portion 20c, the flattened length of the bending portion 20a is the distance between the first connection portion 20b and the second connection portion 20c.

[0046] In some embodiments, the second traction member 42 is connected to the bent portion 20 a of the flexible screen 20 in a similar connection manner to the first traction member 41 .

[0047] Combination Figure 4 and Figure 5 As shown, the bending portion 20a is provided with a fourth connection portion 20e, the second traction member 42 is connected to the second connection portion 20c and the fourth connection portion 20e, and when the bending portion 20a is in a flattened state, the second traction member 42 is arranged with a structural gap between the second connection portion 20c and the fourth connection portion 20e of the bending portion 20a. The benefits of this arrangement can be referred to the arrangement of the first traction member 41, and will not be described one by one here. Accordingly, in this embodiment, when the bending portion 20a is in a flattened state, the gap between the second traction member 42 and the bending portion 20a is less than or equal to 3 times the thickness of the second traction member 42.

[0048] In this embodiment, the fourth connection portion 20e is the connection position between the second traction member 42 and the bending portion 20a, and is also the force point when the second traction member 42 lifts the bending portion 20a. Therefore, the fourth connection portion 20e can be arranged at the position where the bending portion 20a is connected, which is located on the side close to the bending vertex G of the widest part MW of the water drop shape of the bending portion 20a in the folded state, further improving the lifting effect of the second traction member 42 on the bending portion 20a, so that the bending portion 42a is more inclined to be rounded.

[0049] In some embodiments, when the bending portion 20a is in a flattened state, the distance between the second connection portion 20c and the fourth connection portion 20e is 1 / 3 to 1 / 2 of the flattened length of the bending portion 20a. In this embodiment, the portion of the bending portion 20a between the second connection portion 20c and the fourth connection portion 20e is used as the main deformation portion under the action of the second traction member 42, and it is set to occupy 1 / 3 to 1 / 2 of the flattened length of the bending portion 20a, which not only significantly deforms the bending portion 20a, but also prevents the bending portion 20a from being damaged due to excessive stress.

[0050] Combination Figure 5As shown, the first connection portion 20b and the second connection portion 20c are symmetrically arranged with respect to the virtual plane, the first support member 32 and the second support member 33 are symmetrically arranged with respect to the virtual plane, and the first traction member 41 and the second traction member 42 are symmetrically arranged with respect to the virtual plane, wherein the central symmetry plane of the bending portion 20a in the folded state defines the virtual plane, and it can be understood that the bending portion 20a is symmetrical with respect to the virtual plane in the folded state. In this embodiment, the symmetrical arrangement is conducive to maintaining the force balance on both sides of the folding position of the foldable electronic device 100, and this symmetrical structural arrangement can also reduce the structural complexity to facilitate assembly.

[0051] Combination Figure 4 and Figure 5 As shown, a groove is provided on the middle plate 31, and the extending direction of the groove is parallel to the bending axis ZZ of the bending portion 20a. When the bending portion 20a is in the folded state, the position of the bending portion 20a closest to the middle plate 31 is opposite to the groove, so that the groove can be used to form a gap to reduce the contact stress between the bending portion 20a and the middle plate 31 in the folded state.

[0052] The groove includes an arc groove 31a and a sink groove 31b at the bottom of the arc groove 31a, and the depth of the sink groove 31b is less than or equal to the depth of the arc groove 31a. In this embodiment, the sink groove 31b is used to further improve the stress concentration of the bending portion 20a in the folded state, so that the bending portion 20a is not easily damaged by stress concentration.

[0053] In the present application, the arc groove 31a refers to a groove whose cross section of the groove wall is arc-shaped. It should be noted that the arc groove 31a can also be omitted. For example, in combination Figure 6 As shown, the groove on the middle plate 31 is a sink 31b. In addition, the cross-sectional shape of the groove can be an arc or a rectangle, which is not limited here.

[0054] A buffer pad 50 is provided on one side of the middle plate 31 facing the bent portion 20a, and the buffer pad 50 covers part of the groove. When the bent portion 20a presses against the buffer pad 50 to deform, part of the structure of the buffer pad 50 is accommodated in the groove. In this embodiment, the buffer pad 50 is used to further reduce the contact stress between the bent portion 20a and the middle plate 31, thereby helping to reduce the probability of damage to the bent portion 20a.

[0055] The buffer pad 50 may be one, or two or more. It should be noted that when there are two or more buffer pads 50, they may be arranged in pairs on opposite sides of the groove, so as to provide a buffering protection effect on the bending portion 20a. At the same time, even if the bending portion 20a contacts the buffer pad 50 in the folded state, the buffer pad 50 can enter the groove without causing damage to the bending portion 20a. The buffer pads 50 arranged in pairs may be cut by die cutting, and there may be no obvious gap between the buffer pads 50 on both sides of the groove, or the gap may be less than or equal to 1 mm.

[0056] Combination Figure 7 and Figure 8 As shown, in some embodiments, the flexible screen 20 includes a support sheet 60 located at the bending portion 20a, the traction component 40 is connected to the support sheet 60, and when the bending portion 20a is in a folded state, the traction component 40 pulls the bending portion 20a by pulling the support sheet 60.

[0057] It should be noted here that, in an embodiment where the flexible screen 20 includes a support sheet 60, the position of the support sheet 60 for connecting with the traction assembly 40 can define the third connection portion 20d and the fourth connection portion 20e, that is, in this embodiment, the third connection portion 20d and the fourth connection portion 20e can be located on the support sheet 60 of the flexible screen 20.

[0058] In this embodiment, when the bending portion 20a is in a flattened state, the supporting sheet 60 applies tension to the bending portion 20a toward the first connecting portion 20b and the second connecting portion 20c, so that the glue and film materials in the layer structure of the bending portion 20a that have not recovered after creep are flattened and stretched, so as to improve the light and shadow of the flexible screen 20 and reduce creases.

[0059] Since the traction assembly 40 can pull the support sheet 60 so that the support sheet 60 pulls the bending portion 20a, and the support sheet 60 itself has good bending performance, when the support sheet 60 pulls the bending portion 20a, a pulling force can be uniformly applied to the bending portion 20a, so as to maintain the overall structural stability of the bending portion 20a.

[0060] In some embodiments, the elastic modulus of the support sheet 60 is greater than or equal to 100 GPa, so that the support sheet 60 has good elastic force and has the effect of flattening the bent portion 20a.

[0061] like Figure 7As shown, the first adhesive portion 60a and the second adhesive portion 60b are respectively provided at opposite ends of the support sheet 60. The first adhesive portion 60a and the second adhesive portion 60b can be adhesive layers to facilitate bonding the support sheet 60 to the bending portion 20a. The connection method between the support sheet 60 and the bending portion 20a is not limited here. For example, the first adhesive portion 60a and the second adhesive portion 60b used to connect the support sheet 60 to the bending portion 20a can also be replaced by a first component and a second component that realize a connection method such as screw connection or clamping, that is, the first component and the second component respectively connect the two ends of the support sheet 60 to the bending portion 20a.

[0062] Furthermore, the traction component 40 (such as the first traction member 41 and the second traction member 42) is connected to the side of the support sheet 60 facing away from the bending portion 20a, and the position where the traction component 40 is connected to the support sheet 60 (such as the third connection portion 20d and the fourth connection portion 20e) is located between the first component (such as the first bonding portion 60a) and the second component (such as the second bonding portion 60b), so that the traction component 40 can better lift the support sheet 60, so that the support sheet 60 together with the bending portion 20a is deformed, so as to facilitate the bending portion 20a to be more circular.

[0063] like Figure 8 As shown, the first traction member 41 and the first support member 32 may be connected to the same first connection portion 20b. Fig. 9 As shown, the first traction member 41 and the second support member 33 may be connected to different positions of the flexible screen 20. Exemplarily, two or more first connection parts 20b are provided on the flexible screen 20, and the first traction member 41 and the second support member 33 are respectively connected to different first connection parts 20b. Correspondingly, the second traction member 42 and the second support member 33 may be connected to the same second connection part 20c, or may be respectively connected to different second connection parts 20c. The connection position of the first traction member 41 and the second traction member 42 is not limited here. As long as the rotating shaft mechanism 30 drives the bending part 20a of the flexible screen 20 to fold, the rotating shaft mechanism 30 can lift the bending part 20a through the first traction member 41 and the second traction member 42.

[0064] For example, in combination Figure 4 and Fig.10As shown, the first traction member 41 may be provided with a first through hole 41a, and the foldable electronic device 100 includes a first connecting member 100a, which is provided through the first through hole 41a and connects the first support member 32 with the first connecting portion 20b. The second traction member 42 may be provided with a second through hole 42a, and the foldable electronic device 100 includes a second connecting member 100b, which is provided through the second through hole 42a and connects the second support member 33 with the second connecting portion 20c.

[0065] The structures of the first traction member 41 and the second traction member 42 may be the same or different. Fig.11 and Fig.12 As shown, the first traction member 41 includes a traction substrate 411 and a traction film 412, and the traction film 412 is connected to the traction substrate 411. Among them, the traction substrate 411 plays the role of supporting the traction film 412 and elastic reset, and the traction substrate 411 has sufficient rigidity. The elastic modulus of the traction substrate 411 is greater than or equal to 100GPa. The traction film 412 has good flexibility so that it can be deformed after being attached to the bending portion 20a, and can apply elastic pulling effect to the bending portion 20a in the bending state. The traction film 412 can be opened to enhance its deformation ability. The elastic modulus of the traction film 412 is 5GPa to 200GPa, such as 5GPa, 45GPa, 95GPa, 115GPa, 145GPa, 180GPa or 200GPa. In some embodiments, the traction film 412 may also be non-porous to achieve a non-porous design. In this case, the traction film 412 can be made of a material with an elastic modulus lower than 5GPa. The materials of the traction base material 411 and the traction film 412 are not limited herein.

[0066] In the embodiment where the first traction member 41 includes a traction base material 411 , the first through-hole 41 a may be disposed in the traction base material 411 .

[0067] The first traction member 41 includes an adhesive member 413, which is connected to the traction film 412 and is used to connect the traction film 412 to the flexible screen 20. The adhesive member 413 includes but is not limited to an adhesive layer or a double-sided tape.

[0068] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A foldable electronic device, characterized in that: include: A flexible screen comprises a bending portion and a first connecting portion and a second connecting portion connected to two ends of the bending portion; A rotating shaft mechanism connected to the first connecting portion and the second connecting portion, the rotating shaft mechanism being used to drive the bending portion to move between a flattened state and a folded state; and The traction assembly is connected to a side of the flexible screen facing the rotating shaft mechanism, and when the flexible screen moves toward the folded state, the rotating shaft mechanism pulls the bending portion toward the first connecting portion and the second connecting portion through the traction assembly.

2. The foldable electronic device according to claim 1, characterized in that: The bending portion is in a teardrop shape in the folded state, and the point where the pulling component applies pulling to the bending portion is located at the lower half of the teardrop shape.

3. The foldable electronic device according to claim 1 or 2, characterized in that: The hinge mechanism includes a middle plate and a first support member and a second support member connected to both sides of the middle plate, the first support member and the second support member can rotate relative to the middle plate to flatten or fold the bending portion; when the bending portion is in the folded state, the first support member and the second support member form a storage space with the middle plate, and the bending portion is stored in the storage space; when the bending portion is in the flattened state, the first support member and the second support member support the flexible screen.

4. The foldable electronic device according to claim 3, characterized in that: The traction assembly includes a first traction member and a second traction member, wherein one end of the first traction member is connected to the first support member, and the other end is connected to the bending portion; one end of the second traction member is connected to the second support member, and the other end is connected to the bending portion.

5. The foldable electronic device according to claim 4, characterized in that: The bending portion is provided with a third connecting portion, the first traction member is connected to the first connecting portion and the third connecting portion, and when the bending portion is in the flattened state, a structural gap between the first traction member and the bending portion is set between the first connecting portion and the third connecting portion.

6. The foldable electronic device according to claim 5, characterized in that: When the bent portion is in the flattened state, a gap between the first traction member and the bent portion is less than or equal to 3 times the thickness of the first traction member; And / or, when the bending portion is in the flattened state, the distance between the first connecting portion and the third connecting portion is 1 / 3 to 1 / 2 of the flattened length of the bending portion.

7. The foldable electronic device according to claim 4, characterized in that: The first connecting portion and the second connecting portion are symmetrically arranged with respect to a virtual plane, the first supporting member and the second supporting member are symmetrically arranged with respect to the virtual plane, and the first traction member and the second traction member are symmetrically arranged with respect to the virtual plane, wherein the virtual plane is the central symmetry plane of the bending portion when it is in a folded state.

8. The foldable electronic device according to claim 4, characterized in that: The first traction member is provided with a first through hole, and the foldable electronic device includes a first connecting member, which is passed through the first through hole and connects the first supporting member with the first connecting portion; And / or, the second traction member is provided with a second through hole, and the foldable electronic device includes a second connecting member, and the second connecting member is passed through the second through hole and connects the second supporting member with the second connecting portion.

9. The foldable electronic device according to claim 3, characterized in that: A groove is provided on the middle plate, the extension direction of the groove is parallel to the bending axis of the bending portion, and when the bending portion is in the folded state, the position of the bending portion closest to the middle plate is opposite to the groove.

10. The foldable electronic device according to claim 9, characterized in that: The groove includes an arc-shaped groove and a sink located at the bottom of the arc-shaped groove, and the depth of the sink is less than or equal to the depth of the arc-shaped groove.

11. The foldable electronic device according to claim 9, characterized in that: A buffer pad is arranged on one side of the middle plate facing the bending portion, and the buffer pad covers a portion of the groove. When the bending portion presses against the buffer pad to deform, a portion of the structure of the buffer pad is accommodated in the groove.

12. The foldable electronic device according to claim 1, characterized in that: The flexible screen includes a support sheet located at the bending portion, the traction assembly is connected to the support sheet, and when the bending portion is in the folded state, the traction assembly lifts the bending portion by pulling the support sheet, and when the bending portion is in the flattened state, the support sheet applies tension to the bending portion toward the first connecting portion and the second connecting portion.

13. The foldable electronic device according to claim 12, characterized in that: The support sheet is provided with a first component and a second component at both ends, respectively. The first component and the second component are both connected to the bending portion. The traction component is connected to the side of the support sheet facing away from the bending portion, and the position where the traction component is connected to the support sheet is located between the first component and the second component.

14. The foldable electronic device according to claim 12, characterized in that: The elastic modulus of the support sheet is greater than or equal to 100 GPa.

15. The foldable electronic device according to claim 1, characterized in that: It also includes a middle frame assembly, which includes a first shell and a second shell, the hinge mechanism is connected between the first shell and the second shell, so that the first shell and the second shell can rotate relative to each other, the flexible screen is respectively connected to the first shell and the second shell, and the bending portion covers the hinge mechanism.

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