Rotating mechanism, folding hinge and electronic device

Abstract

Provided in the present application are a rotating mechanism, a folding hinge and an electronic device. In the embodiments of the present application, on the basis of the conventional five-panel rotating shaft scheme, a flexible support assembly is added between a five-panel structure and a flexible display screen; the flexible support assembly provides good planar support for the screen, thereby solving problems such as a ribbed feel and press vacancy in the area of the display screen corresponding to the folding hinge when a folding device is fully unfolded, improving the user experience. In the rotating mechanism in the embodiments of the present application, on the basis of the conventional four-bar linkage motion scheme, a secondary linkage group is added; the secondary linkage group can drive the flexible support assembly to open and close uniformly in length; that is, the rotating mechanism can simultaneously enable the flexible display screen and the flexible support assembly to open and close uniformly in length, thereby preventing damage to the flexible display screen and the flexible support assembly caused by stretching or compression during opening and closing.

Description

Rotating mechanism, folding hinge and electronic device

[0001] The present application claims priority to the Chinese patent application No. 202410986168.8, filed on July 22, 2024, and entitled "A rotating mechanism, folding hinge and electronic device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of foldable electronic technology, in particular to a rotating mechanism, folding hinge and electronic device. BACKGROUND

[0003] With the increasing maturity of flexible folding screen technology, flexible folding terminal products have become a major trend. Folding terminal products (such as folding mobile phones, folding tablets, folding computers and other electronic devices) need to meet higher reliability, better operation experience and appearance, so as to be accepted by consumers. The reliability and operation experience of the folding hinge, as the core functional component of the folding terminal product, have an important influence on the folding device. The folding device using the outer folding scheme has the problems of axis area pressing virtual position and touch ribbed feeling in the flat state, thereby affecting the use experience. SUMMARY

[0004] To solve the above technical problems, the present application provides a rotating mechanism, folding hinge and electronic device. The rotating mechanism increases a flexible support assembly between the five-door plate structure and the flexible display screen on the basis of the traditional five-door plate scheme, so as to form a continuous surface support for the screen by the flexible support assembly in the flat state, to solve the problems of ribbed feeling and pressing virtual position of the folding device in the flat state, and to improve the user experience. The rotating mechanism can simultaneously realize the equal length opening and closing of the flexible display screen and the flexible support assembly, so as to prevent the flexible display screen and the flexible support assembly from being damaged due to pulling or compression during the opening and closing process.

[0005] In a first aspect, the present application provides a rotating mechanism, comprising:

[0006] a middle beam, a first connecting block, a second connecting block, a first main swing arm, a second main swing arm and a secondary swing arm;

[0007] The first connecting block is connected with the second connecting block, and the second connecting block is located between the first connecting block and the middle beam;

[0008] The first end of the first main swing arm is rotationally connected with the middle beam, and the second end is rotationally connected with the first connecting block;

[0009] The first end of the second main swing arm is rotationally connected with the middle beam, and the second end is rotationally connected with the second connecting block;

[0010] The second end of the auxiliary swing arm is connected to the second connecting block.

[0011] According to the first aspect, the rotation mechanism can drive two parts to open and close equally in length by reasonably setting the positions and sizes of the first and second main swing arms.

[0012] According to the first aspect, or any one of the implementation forms of the first aspect, the first connecting block and the second connecting block are connected in a sliding manner or in a rotating manner. This structure is simple, easy to disassemble and assemble, has a high processing yield, is low in cost, and is convenient for driving two parts to open and close equally in length.

[0013] According to the first aspect, or any one of the implementation forms of the first aspect, a first sliding groove is arranged on the first connecting block, and a first sliding part is arranged on the second connecting block in a corresponding manner and is arranged in the first sliding groove in a sliding manner. This structure is simple, easy to disassemble and assemble, has a high processing yield, and is low in cost.

[0014] According to the first aspect, or any one of the implementation forms of the first aspect, the rotation mechanism further comprises:

[0015] A rotating connecting piece, one end of the rotating connecting piece is fixedly connected to the first connecting block, and the other end is rotatably connected to the first main swing arm. This structure is simple, easy to disassemble and assemble, has a high processing yield, and is low in cost.

[0016] According to the first aspect, or any one of the implementation forms of the first aspect, the second end of the auxiliary swing arm is connected to the second connecting block in a sliding manner or in a rotating manner. This structure is convenient for driving two parts to open and close equally in length.

[0017] According to the first aspect, or any one of the implementation forms of the first aspect, a second sliding groove is arranged on the second connecting block, and the auxiliary swing arm is arranged in the second sliding groove in a sliding manner. This structure is simple, easy to disassemble and assemble, has a high processing yield, and is low in cost.

[0018] According to the first aspect, or any one of the implementation forms of the first aspect, a second sliding part is arranged on the side wall of the second sliding groove, a third sliding groove is arranged on the two sides of the auxiliary swing arm in a corresponding manner to the second sliding part, and the second sliding part is arranged in the third sliding groove in a sliding manner. This structure is simple, easy to disassemble and assemble, has a high processing yield, and is low in cost.

[0019] According to the first aspect, or any one of the implementations of the first aspect, the second sliding part is curved towards one end of the third sliding groove. This arrangement facilitates providing different sizes of damping at different opening and closing sizes.

[0020] According to the first aspect, or any one of the implementations of the first aspect, the rotating mechanism further comprises:

[0021] a damping spring arranged in the auxiliary swing arm and in contact with the second sliding part and deformed with the sliding of the auxiliary swing arm relative to the second connecting block. This arrangement facilitates providing different sizes of damping at different opening and closing sizes.

[0022] According to the first aspect, or any one of the implementations of the first aspect, the rotating mechanism further comprises:

[0023] a synchronous swing arm having a first end rotatably connected to the middle beam and a second end slidably connected to the first connecting block. This arrangement enables synchronous rotation of the components on both sides of the middle beam.

[0024] According to the first aspect, or any one of the implementations of the first aspect, the connecting plate is connected to the middle beam through one or two second main swing arms. This arrangement is simple in structure, easy to disassemble and assemble, low in difficulty, high in processing yield, low in cost, and facilitates driving the two components to open and close at the same length, respectively.

[0025] The second aspect provides a folding hinge comprising at least two rotating mechanisms according to the first aspect, the at least two rotating mechanisms sharing a middle beam, the at least two rotating mechanisms being symmetrically arranged relative to the middle beam, and a flexible support layer being arranged on the middle beam, the first connecting block, and the second connecting block.

[0026] According to the folding hinge of the second aspect, since the rotating mechanism of the first aspect is adopted, the two components, for example, a flexible display screen and a flexible support layer, can be driven to open and close at the same length, respectively, and the folding hinge can utilize the flexible support assembly to form continuous surface support for the screen in the flat state, thereby solving the ribbed feeling and pressing virtual position problem of the folding device in the flat state and improving the user experience.

[0027] According to the second aspect, or any one of the implementations of the second aspect, the flexible support layer comprises a flexible plate, a middle region of the flexible plate being connected to the middle beam, and two ends of the flexible plate being connected to the second connecting block. This arrangement enables the folding hinge to drive the flexible support layer to open and close at the same length, avoiding damage caused by stretching or compression during the opening and closing process.

[0028] According to a second aspect, or any possible implementation mode of the second aspect, the middle region of the flexible plate is connected with the middle beam by means of glue dispensing, back glue, welding, riveting or screwing. In this way, the structure is simple, the cost is low, and the stability is good.

[0029] According to a second aspect, or any possible implementation mode of the second aspect, the two ends of the flexible plate are connected with the second connecting block by means of glue dispensing, back glue, welding, riveting or screwing with the folding hinge. In this way, the structure is simple, the cost is low, and the stability is good.

[0030] According to a second aspect, or any possible implementation mode of the second aspect, the flexible plate comprises a bending region and a non-bending region, and soft glue is filled in the whole region or the middle region of the bending region. The impact force on the screen can be reduced by the soft glue, and the impact resistance of the screen is improved.

[0031] According to a second aspect, or any possible implementation mode of the second aspect, through holes, blind holes or blind grooves arranged in an array are formed in the bending region of the flexible plate, and the soft glue is filled in the through holes, blind holes or blind grooves. In this way, the bending of the flexible plate is facilitated, and the soft glue can connect the pattern array together, so as to increase the effective action area of the pressing force in the unfolded state, improve the supporting force and user experience.

[0032] According to a second aspect, or any possible implementation mode of the second aspect, the height of the soft glue is consistent with or greater than the depth of the through holes, blind holes or blind grooves. The effective action area of the pressing force in the unfolded state can be increased by the soft glue, the supporting force and user experience are improved, and the screen itself can also be prevented from creeping and the screen creases can be reduced.

[0033] According to a second aspect, or any possible implementation mode of the second aspect, the flexible support assembly further comprises a filling piece arranged in the gap between the flexible plate and the flexible display screen. In this way, the flexible support assembly can realize better continuous surface support for the screen by adding the filling piece in the gap.

[0034] According to a second aspect, or any possible implementation mode of the second aspect, the flexible support assembly further comprises a connecting piece located at the two ends of the flexible plate and arranged between the flexible plate and the folding hinge, for connecting with the folding hinge. In this way, the connection of the flexible support assembly and the folding hinge is facilitated, and the stability of the device is improved.

[0035] In a third aspect, the present application provides an electronic device, comprising: a first shell, a second shell, a folding hinge as described in the second aspect between the first shell and the second shell, and a flexible display screen on the first shell, the second shell and the folding hinge, the rotating mechanism of the folding hinge being fixedly connected with the corresponding first shell or second shell respectively, and the flexible display screen being connected with the first shell and the second shell through the first connecting block and the middle beam of the folding hinge.

[0036] According to the third aspect, since the rotating mechanism of the first aspect and the folding hinge of the second aspect are adopted, the flexible display screen and the flexible support layer can be respectively driven to open and close in equal length, and the folding hinge forms a continuous surface support for the screen in the flat state by using the flexible support assembly, thereby solving the ribbed feeling and pressing virtual position problem of the folding device in the flat state, and improving the user experience. Moreover, the rotating mechanism can simultaneously realize the equal length opening and closing of the flexible display screen and the flexible support assembly, thereby preventing the flexible display screen and the flexible support assembly from being damaged due to stretching or compression during the opening and closing process.

[0037] According to the third aspect, or any one of the implementation manners of the third aspect, the flexible display screen is connected with the middle region of the flexible support layer of the folding hinge through point gluing or back gluing. In this way, the structure is simple, the cost is low, and the stability is good. BRIEF DESCRIPTION OF DRAWINGS

[0038] FIG. 1 is a structural schematic diagram of a current foldable mobile phone in a flat state;

[0039] FIG. 2 is a structural schematic diagram of a current foldable mobile phone in a half-folded state;

[0040] FIG. 3 is a structural schematic diagram of a current folding hinge in a folded state;

[0041] FIG. 4 is a sectional view of a current folding hinge;

[0042] FIG. 5 is a structural schematic diagram of a foldable mobile phone in a flat state according to an embodiment of the present application;

[0043] FIG. 6 is a sectional view of the foldable mobile phone shown in FIG. 5 along the A-A direction;

[0044] FIG. 7 is an enlarged view of the local region of the dashed line region shown in FIG. 6;

[0045] FIG. 8 is a sectional view of the foldable mobile phone shown in FIG. 5 along the A-A direction in a folded state;

[0046] FIG. 9 is an enlarged view of the local region of the dashed line region shown in FIG. 8;

[0047] Figure 10 is a structural schematic diagram of the flexible support assembly of the embodiment of the present application in an unfolded state;

[0048] Figure 11 is a structural schematic diagram of the flexible support assembly of the embodiment of the present application in a folded state;

[0049] Figure 12 is an exploded view of the flexible support assembly of the embodiment of the present application;

[0050] Figure 13 is a structural schematic diagram of the flexible plate of the embodiment of the present application;

[0051] Figure 14 is a B-B direction sectional view of the flexible plate of the embodiment of the present application after the hole area is filled with soft glue;

[0052] Figure 15 is a schematic diagram of pressure transmission of the flexible plate of the embodiment of the present application when the hole area is not filled with soft glue;

[0053] Figure 16 is a schematic diagram of pressure transmission of the flexible plate of the embodiment of the present application when the hole area is filled with soft glue;

[0054] Figure 17 is a structural schematic diagram of the flexible plate of another embodiment of the present application;

[0055] Figure 18 is a B-B direction sectional view of the flexible plate shown in Figure 17;

[0056] Figure 19 is a partial enlarged view of Figure 18;

[0057] Figure 20 is a structural schematic diagram of the flexible plate of another embodiment of the present application;

[0058] Figure 21 is a B-B direction sectional view of the flexible plate shown in Figure 20;

[0059] Figure 22 is a structural schematic diagram of the flexible plate of another embodiment of the present application;

[0060] Figure 23 is a B-B direction sectional view of the flexible plate shown in Figure 22;

[0061] Figure 24 is a schematic diagram of the support effect of the flexible assembly of the embodiment of the present application;

[0062] Figure 25 is a structural schematic diagram of the folding hinge of the embodiment of the present application;

[0063] Figure 26 is another structural schematic diagram of the folding hinge of the embodiment of the present application;

[0064] Figure 27 is a schematic diagram of the rotating mechanism of the embodiment of the present application;

[0065] Figure 28 is an exploded view of the folding hinge of the embodiment of the present application;

[0066] Figure 29 is an exploded view of the rotating mechanism of the embodiment of the present application;

[0067] FIG. 30 is a schematic diagram of a movement principle of a rotating structure according to an embodiment of the present application;

[0068] FIG. 31 is a schematic diagram of a shape of a damping spring according to an embodiment of the present application. DETAILED DESCRIPTION

[0069] The technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0070] The term "and / or" in the present application is merely used to describe an association relationship of associated objects, and indicates that three relationships can exist, for example, A and / or B can represent three cases of existence of A alone, existence of A and B simultaneously, and existence of B alone.

[0071] The terms "first" and "second" and the like in the specification and claims of the embodiments of the present application are used to distinguish different objects, rather than to describe a specific order of the objects. For example, a first target object and a second target object are used to distinguish different target objects, rather than to describe a specific order of the target objects.

[0072] In the embodiments of the present application, the words "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design presented as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or advantageous than other embodiments or design solutions. Rather, the use of "exemplary" or "for example" is merely intended to present concepts in a concrete manner.

[0073] In the description of the embodiments of the present application, unless otherwise specified, "a plurality of" means two or two or more. For example, a plurality of processing units means two or two or more processing units; a plurality of systems means two or two or more systems.

[0074] The folding hinge is a key component of the foldable electronic device, and the opening and closing of the foldable electronic device can be realized by using the folding hinge. When the foldable electronic device is in an open state and no external force is applied, the foldable electronic device can maintain the open state. Similarly, when the foldable electronic device is in a closed state and no external force is applied, the foldable electronic device can maintain the closed state. At the same time, the support effect of the folding hinge on the display screen is also an important indicator affecting the experience of the foldable electronic device.

[0075] As shown in FIGS. 1-3, the electronic device 100 includes a housing 10, a folding hinge 20, and a flexible display 30. The folding hinge 20 is capable of deforming to allow the first housing 11 to fold or unfold relative to the second housing 12. As shown in FIG. 1, the first housing 11 and the second housing 12 are capable of unfolding relative to each other to a flat state, so that the electronic device 100 is in the flat state. For example, when the first housing 11 and the second housing 12 are in the flat state, they can be substantially 180° (allowing a small deviation, for example, 165°, 177°, or 185°). As shown in FIG. 2, the first housing 11 and the second housing 12 are capable of rotating (unfolding or folding) relative to each other to an intermediate state, so that the electronic device 100 is in the intermediate state. As shown in FIG. 3, the first housing 11 and the second housing 12 are capable of folding relative to each other to a closed state, so that the electronic device 100 is in the closed state. For example, when the first housing 11 and the second housing 12 are in the closed state, they can be completely folded to be parallel to each other (allowing a small deviation). The intermediate state shown in FIG. 2 can be any state between the flat state and the closed state. Therefore, the electronic device 100 can switch between the flat state and the closed state by deforming the folding hinge 20.

[0076] In some embodiments, the flexible display 30 is configured to display images. For example, the flexible display 30 can be an organic light emitting diode (OLED) display, an active matrix organic light emitting diode (AMOLED) display, a mini organic light emitting diode display, a micro organic light-emitting diode display, a micro organic light-emi tting diode display, or a quantum dot light emitting diodes (QLED) display.

[0077] The flexible display screen 30 includes a first non-bending part 31, a bending part 32 and a second non-bending part 33 arranged in sequence. The flexible display screen 30 is fixed to the shell 10. For example, the flexible display screen 30 can be bonded to the shell 10 by a glue layer. The first non-bending part 31 of the flexible display screen 30 is fixed to the first shell 11, and the second non-bending part 33 is fixed to the second shell 12. During the folding or unfolding of the first shell 11 and the second shell 12, the bending part 32 deforms. As shown in FIG. 1, when the first shell 11 and the second shell 12 are in a flat state, the flexible display screen 30 is in a flat state. As shown in FIG. 2, when the first shell 11 and the second shell 12 are in an intermediate state, the flexible display screen 30 is in an intermediate state between the flat state and the closed state. As shown in FIG. 3, when the first shell 11 and the second shell 12 are in a closed state, the flexible display screen 30 is in a closed state. When the electronic device 100 is in a closed state, the flexible display screen 30 is located on the outside of the shell 10, and the flexible display screen 30 can be substantially in a U shape.

[0078] In this embodiment, the flexible display screen 30 can be unfolded or folded with the folding hinge 20. When the electronic device 100 is in a flat state, the flexible display screen 30 is in a flat state and can be displayed in full screen, so that the electronic device 100 has a larger display area to improve the viewing experience of the user. When the electronic device 100 is in a closed state, the planar size of the electronic device 100 is small (has a small width size), which is convenient for the user to carry and store.

[0079] In order to clearly describe the technical solutions of the embodiments of the present application, as shown in FIG. 3, three directions can be defined, which are the length direction (X direction, also referred to as the first direction) of the foldable mobile phone, the width direction (Y direction, also referred to as the second direction) of the foldable mobile phone, and the thickness direction (Z direction, also referred to as the third direction) of the foldable mobile phone.

[0080] In addition, in the embodiments of the present application, "up", "down", "left" and "right" refer to the positions determined with the user's hand as a reference when the user holds the foldable mobile phone with both hands and the flexible screen 30 faces the user when the foldable mobile phone is in a flat state.

[0081] It can be understood that the present embodiment is described by taking "the rotation center of the electronic device 100 being parallel to the length direction of the electronic device 100" as an example, at this time, the electronic device 100 can realize left-right rotation, and the folding and unfolding of the electronic device 100 affects the width size of the electronic device 100. In some other embodiments, the rotation center of the electronic device 100 can also be parallel to the width direction of the electronic device 100, at this time, the electronic device 100 can realize up-down rotation, and the folding and unfolding of the electronic device 100 affects the length size of the electronic device 100.

[0082] FIG. 4 is a sectional view of a current folding hinge. As shown in FIG. 4, the current folding hinge 20 generally includes a middle beam 21, a first door plate 22, a second door plate 23, a third door plate 24, and a fourth door plate 25, which is also referred to as a five-door plate structure. The first door plate 22, the second door plate 23, the third door plate 24, and the fourth door plate 25 are rotationally connected to the middle beam 21 through swing arms, so as to be able to rotate relative to the middle beam 21, thereby realizing folding or unfolding of the folding hinge. As shown in FIG. 4, when the folding hinge with the current five-door plate structure is used, the bending part 32 of the flexible display screen 30 is mainly supported by the middle beam 21, the first door plate 22, the second door plate 23, the third door plate 24, and the fourth door plate 25. However, as shown in FIG. 4, the support effect of the folding hinge on the flexible display screen 30 is not good, which affects the user experience of touching the flexible display screen 30. For example, when the folding hinge 20 is in an unfolded state, the first door plate 22 and the second door plate 23 only have a line support effect (point support in the sectional view) on the display screen, which causes a rib feeling when the user touches the area. For another example, there are large gaps between the middle beam 21 and the first door plate 22 and the second door plate 23, and between the first door plate 22 and the third door plate 24 and between the second door plate 22 and the fourth door plate 25. These areas do not support the screen, which causes a false pressing problem when the user presses these areas. In addition, with further thinning of the foldable electronic device, the outer contour arc diameter of the middle beam 21 and other parts will be further reduced, which will exacerbate the above two problems.

[0083] The embodiment of the present application proposes a rotating mechanism, a folding hinge, and an electronic device based on the above, which adds a flexible support member between the five-door plates and the display screen in the above-mentioned conventional five-door plate scheme, and forms a good surface support on the screen through the flexible support member, thereby solving the rib feeling and false pressing problem in the area corresponding to the display screen and the folding hinge when the folding device is unfolded, and improving the user experience. The rotating mechanism of the embodiment of the present application adds a secondary rod set on the basis of the original four-bar mechanism scheme, which can drive the flexible support assembly to open and close with the same length, that is, the rotating mechanism can simultaneously drive the screen and the flexible support assembly to open and close with the same length, thereby preventing the flexible display screen and the flexible support assembly from being damaged due to stretching or compression during opening and closing.

[0084] As shown in FIGS. 5-9, the electronic device 200 includes a housing 10, a folding hinge 20, and a flexible display 30 in the embodiments of the present application. The folding hinge 20 can be deformed to fold or unfold the first housing 11 and the second housing 12 relative to each other. The folding hinge 20 includes a middle beam 21, a first door plate 22, a second door plate 23, a third door plate 24, a fourth door plate 25, a second connecting block 26, a first main swing arm 27, a second main swing arm 28, a sub swing arm 29, and a synchronous swing arm 34. The first door plate 22 and the second door plate 23 are rotationally connected to the middle beam 21 through the first main swing arm 27, the third door plate 24 and the fourth door plate 25 are rotationally connected to the middle beam 21 through the first main swing arm 27 and the synchronous swing arm 34, the second connecting block 26 is rotationally connected to the middle beam 21 through the second main swing arm 27, the sub swing arm 29 is rotationally connected to the middle beam 21 and connected to the first connecting block (i.e., the third door plate 24 or the fourth door plate 25), and the first connecting block is connected to the second connecting block 26. In the embodiments of the present application, a flexible support assembly 40 is arranged between the middle beam 21, the first door plate 22, the second door plate 23, the third door plate 24, the fourth door plate 25, and the flexible display 30. One side of the flexible support assembly 40 is connected to the folding hinge 20 (specifically, the middle beam 21 and the second connecting block 26), and the other side is connected to the flexible display 30. The flexible display 30 is connected to the first housing 11, the second housing 12, and the first connecting block 26, specifically, through back glue or point glue. In this way, the flexible display 30 and the flexible support assembly 40 can be simultaneously driven to open and close by the folding hinge 20, avoiding damage caused by pulling or compression during opening and closing. The movement principle of the folding hinge 20 is described in detail below.

[0085] For example, the flexible support assembly 40 includes a bending region and a non-bending region. The two sides (non-bending region) of the flexible support assembly 40 are fixedly connected to the second connecting block 26, and the fixing methods include but are not limited to point glue, back glue, welding, riveting, screw fastening, etc. The middle region of the flexible support assembly 40 is fixedly connected to the middle beam 21, and the fixing methods include but are not limited to point glue, back glue, welding, riveting, screw fastening, etc. The middle region of the flexible support assembly 40 is also fixedly connected to the flexible display 30, and the fixing methods include but are not limited to point glue, back glue, etc.

[0086] Exemplarily, in combination with FIGS. 10-12, in an embodiment of the present application, the flexible support assembly 40 comprises a flexible plate 41, a filler 42, and a connecting member 43. The flexible plate 41 is used to support the flexible display screen 30, which can be deformed to unfold or fold along with the movement of the folding hinge 20. The filler 42 is located between the flexible plate 41 and the flexible display screen 30, i.e., on the side of the flexible plate 41 facing the flexible display screen 30, and is used to fill the gap between the flexible plate 41 and the flexible display screen 30. The connecting member 43 is located between the flexible plate 41 and the folding hinge 20, i.e., on the side of the flexible plate 41 away from the flexible display screen 30, and is used to connect and fix the flexible plate 41 and the folding hinge 20 (specifically the second connecting block). Exemplarily, the filler 42 is arranged on the flexible plate 41 except for the middle region of the flexible plate 41. The connecting member 43 is arranged at both ends of the flexible plate 41 and is used to connect with the folding hinge 20. The middle region of the flexible plate 41 refers to the region of the flexible plate 41 that is in contact with the middle beam 21.

[0087] Please continue to refer to FIGS. 5-9. The middle region of the flexible plate 41 is connected and fixed with the middle beam 21 in a manner including but not limited to glue dispensing, back glue, welding, riveting, screw fastening, etc. The middle region of the flexible plate 41 is also connected and fixed with the flexible display screen 30 in a manner including but not limited to glue dispensing, back glue, etc. The connecting member 43 is connected and fixed with the folding hinge 20 (specifically the second connecting block 26) in a manner including but not limited to glue dispensing, back glue, welding, riveting, screw fastening, etc. As shown in FIG. 7, the connecting member 43 can be connected and fixed with the second connecting block 26.

[0088] Exemplarily, the flexible plate 41 can be a bendable plate or sheet component. The flexible plate 41 can be divided into a bending region and a non-bending region, and the non-bending region is located at both ends of the flexible plate 41 and is used to be connected and fixed with the second connecting block 26. In other words, the connecting member 43 is arranged at the non-bending region of the flexible plate 41 and is used to be connected and fixed with the second connecting block 26.

[0089] In combination with FIG. 13, in some embodiments, the flexible plate 41 can be a plate or sheet component without openings. In some embodiments, the flexible plate 41 can be a plate or sheet component with openings. In some embodiments, the flexible plate 41 can be a plate or sheet component with blind holes or blind grooves. The through holes, blind holes, or blind grooves can make the flexible plate 41 more easily bent and less likely to form wrinkles during the bending process. In combination with FIG. 12, exemplarily, the through holes, blind holes, or blind grooves are arranged in the bending region of the flexible plate 41. Of course, in other embodiments, the through holes, blind holes, or blind grooves can also be arranged in the non-bending region of the flexible plate 41.

[0090] Exemplarily, in some embodiments, the opening areas (through holes, blind holes or blind grooves) of the flexible plate 41 can be filled with soft glue, which can connect the opening pattern arrays together, so as to increase the effective area of the pressing force when the flexible plate 41 is in the flat state, thereby effectively improving the supporting force. In addition, the soft glue filling in the opening areas of the flexible plate 41 can reduce the hole edge, improve the protection of the flexible display screen 30, and thereby improve the reliability of the whole machine.

[0091] As shown in FIG. 14, the opening areas of the flexible plate 41 are all filled with soft glue, and the height / thickness of the soft glue is consistent with the height / thickness of the holes.

[0092] As shown in FIGS. 15 and 16, after the opening areas (through holes, blind holes or blind grooves) of the flexible plate 41 are filled with soft glue, when the user presses the flexible display screen 30, the pressure transmission is more uniform than when the soft glue is not filled.

[0093] In some embodiments, as shown in FIGS. 17 to 19, the local areas of the opening areas of the flexible plate 41 are filled with soft glue 50, so that the local opening arrays can be connected together, so as to increase the effective area of the local pressing force when the flexible plate 41 is in the flat state, thereby effectively improving the supporting force.

[0094] Exemplarily, for example, the middle area of the flexible plate 41, for example, the area corresponding to the middle beam 41 is filled with soft glue 50.

[0095] Exemplarily, the height of the soft glue 50 is greater than the depth of the opening. That is, the soft glue 50 protrudes relative to the flexible plate 41. The local protrusion of the soft glue can resist the self-creep of the screen, reduce the screen crease, and improve the user experience.

[0096] In some embodiments, as shown in FIGS. 20 and 21, the local areas of the surface of the flexible plate 41 without openings are filled with soft glue 50. The local protrusion of the soft glue can resist the self-creep of the screen, reduce the screen crease, and improve the user experience.

[0097] In some embodiments, as shown in FIGS. 22 and 23, the bending areas of the surface of the flexible plate 41 without openings are filled with soft glue 50. The soft glue can slow down the impact on the screen when the user presses or the device falls, thereby improving the anti-impact ability of the screen of the whole machine.

[0098] Exemplarily, in some embodiments of the present application, the flexible plate 41 can be made of super-elastic metal, high polymer material, etc. The super-elastic metal refers to a metal with an elastic modulus greater than a certain threshold.

[0099] Exemplarily, in some embodiments of the present application, the soft glue 50 can be made of silicone, non-Newtonian foam, etc.

[0100] FIG. 24 is a schematic view of a supporting effect of the flexible support assembly according to an embodiment of the present application. As shown in FIG. 24, the flexible support assembly according to an embodiment of the present application can form a continuous large-area support for the screen when the folding device is unfolded, thereby solving the problems of rib feeling and false pressing when a user touches the folding device.

[0101] It should be understood that the flexible support assembly 40 can include the flexible plate 41, the filler 42 and the connecting member 43 as described above, or can be an integrated structure. For example, the flexible plate 41 can have a shape of thick at both ends and thin in the middle, so that the connecting member 43 is removed. Of course, when the flexible plate 41 has a shape of thick at both ends and thin in the middle, the flexible support assembly 40 can still include the connecting member 43. Those skilled in the art can make various modifications and improvements according to the above embodiments.

[0102] With reference to FIGS. 5-9, in the embodiments of the present application, the flexible support assembly 40 and the flexible display screen 30 are opened and closed with equal length during unfolding and folding of the electronic device 200. In order to achieve this effect, the rotating mechanism of the folding hinge 20 is improved in the embodiments of the present application to meet the above requirements.

[0103] With reference to FIGS. 25-29, and in combination with FIGS. 7 and 9, in some embodiments of the present application, the folding hinge 20 includes at least two rotating mechanisms 20A, for example, two, four, six or more rotating mechanisms 20A. In some embodiments, the folding hinge 20 includes six rotating mechanisms 20A. The six rotating mechanisms 20A are symmetrically arranged relative to the middle beam 21, three rotating mechanisms 20A are arranged on each side, and the six rotating mechanisms 20A share the same middle beam 21 and the first connecting block (the third door plate 24 or the fourth door plate 25).

[0104] As described above, the rotating mechanism 20A can make the flexible support assembly 40 and the flexible display screen 30 open and close with equal length, respectively.

[0105] As shown in FIGS. 25-29, the rotating mechanism 20A includes the middle beam 21, the first connecting block (the third door plate 24 or the fourth door plate 25), the second connecting block 26, the first main swing arm 27, the second main swing arm 28, the auxiliary swing arm 29 and the synchronous swing arm 34. In the embodiments of the present application, the rotating mechanism adds the second connecting block 26 and the second main swing arm 28 on the basis of the four-bar scheme of the middle beam 21, the first connecting block, the first main swing arm 27 and the auxiliary swing arm 29, and is therefore also called a six-bar rotating mechanism.

[0106] In the embodiment of the present application, the first end of the first main swing arm 27 is rotationally connected with the middle beam 21, and the first door plate 22 / second door plate 23 is assembled on the first main swing arm 27 through fasteners. When the first main swing arm 27 rotates relative to the middle beam 21, the first door plate 22 / second door plate 23 can be driven to rotate relative to the middle beam 21. The second end of the first main swing arm 27 is rotationally connected with the first connecting block (the third door plate 24 or the fourth door plate 25) through the rotation connecting piece 35. Specifically, the first connecting block (the third door plate 24 or the fourth door plate 25) is fixedly connected with the rotation connecting piece 35, and the rotation connecting piece 35 is rotationally connected with the second end of the first main swing arm 27. In this way, when the first connecting block (the third door plate 24 or the fourth door plate 25) is stressed, the first main swing arm 27 and the first door plate 22 can be driven to rotate relative to the middle beam 21.

[0107] In the embodiment of the present application, the first end of the second main swing arm 28 is rotationally connected with the middle beam 21, and the second end is rotationally connected with the second connecting block 26. The second connecting block 26 is slidingly connected with the first connecting block (the third door plate 24 or the fourth door plate 25). When the first connecting block (the third door plate 24 or the fourth door plate 25) is stressed, the second connecting block 26 and the second main swing arm 28 can be driven to rotate relative to the middle beam 21, and at the same time, the second connecting block 26 can be driven to slide relative to the first connecting block (the third door plate 24 or the fourth door plate 25). As shown in FIG. 29, the first connecting block (the third door plate 24 or the fourth door plate 25) is provided with a first sliding groove 241, and the two ends of the second connecting block 26 are correspondingly provided with first sliding parts 261. When the first connecting block (the third door plate 24 or the fourth door plate 25) and the second connecting block 26 are assembled together, the first sliding parts 261 are clamped in the corresponding first sliding grooves 241, so that the second connecting block 26 can slide relative to the first connecting block (the third door plate 24 or the fourth door plate 25).

[0108] For example, in the embodiment of the present application, the second connecting block 26 is connected with the middle beam 21 through two second main swing arms 28. Of course, in other embodiments, the number of the first main swing arms 28 can also be one, three or more.

[0109] In the embodiment of the present application, the first end of the second main swing arm 28 is rotationally connected with the middle beam 21, and the second end is rotationally connected with the second connecting block 26. The second connecting block 26 is slidingly connected with the first connecting block (the third door plate 24 or the fourth door plate 25). When the first connecting block (the third door plate 24 or the fourth door plate 25) is stressed, the second connecting block 26 and the second main swing arm 28 can be driven to rotate relative to the middle beam 21, and at the same time, the second connecting block 26 can be driven to slide relative to the first connecting block (the third door plate 24 or the fourth door plate 25). As shown in FIG. 29, the first connecting block (the third door plate 24 or the fourth door plate 25) is provided with a first sliding groove 241, and the two ends of the second connecting block 26 are correspondingly provided with first sliding parts 261. When the first connecting block (the third door plate 24 or the fourth door plate 25) and the second connecting block 26 are assembled together, the first sliding parts 261 are clamped in the corresponding first sliding grooves 241, so that the second connecting block 26 can slide relative to the first connecting block (the third door plate 24 or the fourth door plate 25).

[0110] As shown in FIG. 29, the second connecting block 26 is provided with a second sliding groove 262, and the second sliding groove 262 is provided with a second sliding part 263 on the side wall. The two ends of the auxiliary swing arm 29 are provided with a third sliding groove 291 corresponding to the second sliding part 263, and the connection and relative sliding of the second connecting block 26 and the auxiliary swing arm 29 are realized by inserting the second sliding part 263 into the third sliding groove 291.

[0111] The motion principle of the rotating structure 20A in the embodiment of the present application is shown in FIG. 30. The six-bar mechanism movable member is 5, the lower pair is 7, and the higher pair is 0. Therefore, the degree of freedom of the rotating structure 20A is 5*3-7*2-0*1=1, that is, the motion of the rotating shaft of the six-bar mechanism has uniqueness.

[0112] As shown in FIGS. 25-29, in combination with FIGS. 7 and 9, it can be seen that the rotating radius and rotating shaft of each rotating component (for example, the first connecting block, the second connecting block 26 and the auxiliary swing arm 29) can be adjusted by reasonably arranging the positions of the first main swing arm 27 and the second main swing arm 28, so that the folding hinge 20 can drive the flexible support assembly 40 and the flexible display screen 30 to open and close in the same length.

[0113] Further, in the embodiment of the present application, the auxiliary swing arm 29 is provided with a mounting groove 292, and a damping spring 50 is mounted in the mounting groove 292. The mounting groove 292 is in communication with the second sliding groove 291, and the two ends of the damping spring 50 are in contact with the second sliding part 263 through the sliding block 51.

[0114] In the embodiment of the present application, the end of the second sliding part 263 in contact with the sliding block 51 is provided with a curved surface, that is, the end of the second sliding part 263 in contact with the sliding block 51 is provided with a convex and a concave. In this way, when the auxiliary swing arm 29 slides relative to the connecting plate 26, the distance between the second sliding part 263 and the damping spring 50 changes constantly, so that the sliding block 51 slides and causes the damping spring 50 to deform, thereby providing the user with damping force and providing the user with a damping experience of using the folding device. By reasonably setting the curved surface shape of the second sliding part 263, the damping size of the folding device when the folding device is not fully opened and closed can be reasonably set, and a better damping experience can be provided for the user.

[0115] For example, in the embodiment of the present application, the damping spring 50 is a special-shaped spring. The damping spring 50 can adopt the shape of the spring shown in FIGS. 27 and 31, and other suitable shapes of springs.

[0116] Further, in the embodiments of the present application, a synchronous swing arm 34 is further arranged between the first connecting block (the third door plate 24 or the fourth door plate 25) and the middle beam 21. The first end of the synchronous swing arm 34 is rotationally connected with the middle beam 21, and the second end is slidingly connected with the first connecting block (the third door plate 24 or the fourth door plate 25). Exemplarily, a fourth sliding groove 242 is arranged on the first connecting block (the third door plate 24 or the fourth door plate 25), the second end of the synchronous swing arm 34 is installed in the fourth sliding groove 242 and can slide relative to the fourth sliding groove 242. The first end of the synchronous swing arm 34 is provided with a synchronous gear 341, and two opposite synchronous gears 341 are engaged with each other, thereby ensuring the synchronous rotation of the first door plate 22, the second door plate 23, the third door plate 24 and the fourth door plate 25.

[0117] It should be understood that the above rotating mechanism 20A is only exemplary, and the embodiments of the present application can be variously modified and improved on the basis of the above principles. For example, in some embodiments, the sub-swing arm 27 and the second connecting block 26 can be rotationally connected, and the second connecting block 26 and the third door plate 24 can be slidingly connected. For another example, in some embodiments, the sub-swing arm 27 and the second connecting block 26 can be rotationally connected, and the second connecting block 26 and the first connecting block (the third door plate 24 or the fourth door plate 25) can be rotationally connected. For another example, in some embodiments, the sub-swing arm 27 and the second connecting block 26 can be slidingly connected, and the second connecting block 26 and the first connecting block (the third door plate 24 or the fourth door plate 25) can be rotationally connected.

[0118] The above-described embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A rotating mechanism, characterized in that, The application relates to a rotating mechanism. The application relates to a rotating mechanism. The first end of the first main swing arm is rotationally connected with the middle beam, and the second end is rotationally connected with the first connecting block. The first end of the second main swing arm is rotationally connected with the middle beam, and the second end is rotationally connected with the second connecting block. The first end of the auxiliary swing arm is rotationally connected with the middle beam, and the second end is connected with the second connecting block. The first connecting block and the second connecting block are slidingly connected or rotationally connected.

2. The swivel mechanism of claim 1, wherein A first sliding groove is arranged on the first connecting block, and a first sliding part is correspondingly arranged on the second connecting block and slidingly arranged in the first sliding groove.

3. The swivel mechanism of claim 2, wherein, The application further relates to a rotating mechanism.

4. The swivel mechanism of claim 1, wherein One end of the rotating connecting piece is fixedly connected with the first connecting block, and the other end is rotationally connected with the first main swing arm. The second end of the auxiliary swing arm is slidingly connected or rotationally connected with the second connecting block.

5. The swivel mechanism of claim 1, wherein A second sliding groove is arranged on the second connecting block, and the auxiliary swing arm is slidingly arranged in the second sliding groove.

6. The swivel mechanism of claim 5, wherein, A second sliding part is arranged on the side wall of the second sliding groove, and a third sliding groove is arranged on the two sides of the auxiliary swing arm and correspondingly to the second sliding part, and the second sliding part is slidingly arranged in the third sliding groove.

7. The swivel mechanism of claim 6, wherein, The second sliding part is arranged in a curved shape towards one end of the third sliding groove.

8. The swivel mechanism of claim 7, wherein, The application further relates to a rotating mechanism.

9. The swivel mechanism of claim 8, wherein, A damping spring is arranged in the auxiliary swing arm, and the damping spring is in contact with the second sliding part and deforms with the sliding of the auxiliary swing arm relative to the second connecting block. The application further relates to a rotating mechanism.

10. The swivel mechanism according to any one of claims 1-9, characterized in that The second end of the auxiliary swing arm is slidingly connected or rotationally connected with the second connecting block. The second connecting block is connected with the middle beam through one or two second main swing arms.

11. A swivel mechanism according to any one of claims 1-9, characterized in that The application relates to a rotating mechanism.

12. A foldable hinge, characterized in that The middle region of the flexible plate is connected with the middle beam through point gluing, back gluing, welding, riveting or screwing.

13. The foldable hinge of claim 12, wherein, The two ends of the flexible plate are connected with the second connecting block through point gluing, back gluing, welding, riveting or screwing.

14. The foldable hinge of claim 13, wherein, The flexible plate comprises a bending region and a non-bending region, and soft glue is filled in the whole region or the middle region of the bending region.

15. The foldable hinge of claim 13, wherein, Array-arranged through holes, blind holes or blind grooves are formed in the bending region of the flexible plate, and the soft glue is filled in the through holes, blind holes or blind grooves.

16. The foldable hinge according to any one of claims 13-15, characterized in that The thickness of the soft glue is consistent with or greater than the depth of the through holes, blind holes or blind grooves.

17. The foldable hinge of claim 16, wherein, The flexible support assembly further comprises a filling piece arranged in the gap between the flexible plate and the flexible display screen.

18. The foldable hinge of claim 17, wherein, ​ 19. The foldable hinge according to any of claims 13-15, characterized in that ​ 20. The foldable hinge according to any of claims 13-15, characterized in that The flexible support assembly further comprises a connecting piece located at both ends of the flexible plate and arranged between the flexible plate and the folding hinge for connecting with the second connecting block.

21. An electronic device, comprising: The folding hinge comprises a first connecting block, a second connecting block, a middle beam, a rotating mechanism, a flexible support layer and a flexible display screen, wherein the first connecting block and the second connecting block are arranged on the first shell and the second shell respectively, the middle beam is arranged between the first connecting block and the second connecting block, the rotating mechanism is arranged between the middle beam and the first shell or the second shell, the flexible support layer is arranged between the first connecting block and the second connecting block, and the flexible display screen is arranged on the first shell, the second shell and the folding hinge.

22. The electronic device of claim 21, wherein, The flexible display screen is connected with the middle region of the flexible support layer of the folding hinge through point gluing or back gluing.

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