Hinge mechanism and foldable electronic device

Abstract

The embodiments of the present application provide a hinge mechanism and a foldable electronic device, wherein the first main swing arm and the second main swing arm of the hinge mechanism rotate around the main axis respectively, and the first main swing arm and the second main swing arm pull the various links in the first linkage assembly and the second linkage assembly and the interaction between the various links, thereby driving the relative sliding between the first screen back panel link and the first main swing arm and between the second screen back panel link and the second main swing arm, which can realize the inward folding and outward folding functions in the same bending area, thereby improving the user experience.

Description

Technical Field

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

[0002] Mobile phones, computers and other electronic devices have become inseparable from our lives. They can be seen everywhere in our lives and have greatly improved people's living standards. With the rapid development of communication equipment technology, the screen display effect of electronic devices has received more and more attention. However, the size of electronic devices restricts the expansion of screen size.

[0003] In the prior art, in order to achieve a larger screen area on a smaller electronic device, the electronic device can adopt a foldable structure. Specifically, the foldable electronic device generally includes a first shell, a second shell and a hinge mechanism, wherein the first shell and the second shell are rotatably connected to the main shaft through the hinge mechanism, so that the first shell and the second shell can rotate relative to each other to achieve the folding or unfolding of the first shell and the second shell. Moreover, the flexible screen body covers the first shell, the second shell and the hinge mechanism, and when the first shell and the second shell are relatively rotated to the unfolded state located in the same plane through the hinge mechanism, the flexible screen body is also unfolded; when the first shell and the second shell are rotated to a relatively folded state through the hinge mechanism, the flexible screen body is also folded and arranged between the first shell and the second shell, or, when the first shell and the second shell are rotated to a relatively folded state through the hinge mechanism, the flexible screen body is also folded and arranged on the outside of the first shell and the second shell.

[0004] However, the above-mentioned foldable electronic device can only achieve a single inward fold or outward fold during the folding or unfolding process. Summary of the invention

[0005] The embodiments of the present application provide a hinge mechanism and a foldable electronic device, which solves the problem that existing foldable electronic devices can only achieve a single inward folding or outward folding during the folding or unfolding process, and can achieve the inward folding and outward folding functions in the same bending area, thereby improving the user experience.

[0006] In a first aspect, an embodiment of the present application provides a hinge mechanism, which is applied to a foldable electronic device, comprising: a main shaft, a first main swing arm and a second main swing arm located on both sides of the main shaft, a first linkage assembly and a second linkage assembly located on both sides of the main shaft, and a first screen back panel connecting rod and a second screen back panel connecting rod located on both sides of the main shaft;

[0007] Wherein, the first main swing rod and the second main swing rod include a rotating end, a pushing end and a sliding end, the first linkage assembly includes a first connecting rod and a second connecting rod, and the second linkage assembly includes a third connecting rod and a fourth connecting rod;

[0008] The rotating end of the first main swing arm is rotationally connected to the main shaft, the pushing end is rotationally connected to the first end of the first connecting rod, the sliding end is slidingly connected to the first screen back panel connecting rod, and the pushing end and the rotating end have different rotation axes;

[0009] The second end of the first connecting rod is rotatably connected to the first end of the second connecting rod, the second end of the second connecting rod is rotatably connected to an end of the first screen back plate connecting rod away from the first main swing rod, and the rotation axis of the second end of the first connecting rod is different from the rotation axis of the first end of the second connecting rod;

[0010] The rotating end of the second main swing arm is rotationally connected to the main shaft, the pushing end is rotationally connected to the first end of the third connecting rod, the sliding end is slidingly connected to the second screen back plate connecting rod, and the pushing end and the rotating end have different rotation axes;

[0011] The second end of the third connecting rod is rotationally connected to the first end of the fourth connecting rod, the second end of the fourth connecting rod is rotationally connected to an end of the second screen back panel connecting rod away from the second main swing rod, and the rotation axis of the second end of the third connecting rod is different from the rotation axis of the first end of the fourth connecting rod.

[0012] The hinge mechanism provided in the embodiment of the present application is characterized in that the first main rocker arm of the hinge mechanism rotates around the main axis, the first main rocker arm pulls the various links in the first linkage assembly to move and causes the various links to interact with each other, thereby driving the relative sliding between the first screen back panel link and the first main rocker arm. Similarly, the second main rocker arm rotates around the main axis, the second main rocker arm pulls the various links in the second linkage assembly to move and causes the various links to interact with each other, thereby driving the relative sliding between the second screen back panel link and the second main rocker arm, and the inward and outward folding functions can be realized in the same bending area, thereby improving the user experience.

[0013] In an optional implementation, the main shaft includes: a support and a first fixed shaft and a second fixed shaft fixedly connected to the support;

[0014] The first fixed axis and the second fixed axis are respectively located on both sides of the central axis of the support, and the rotating end of the first main swing arm rotates around the first fixed axis, and the rotating end of the second main swing arm rotates around the second fixed axis.

[0015] The first fixed axis and the second fixed axis located on both sides of the central axis of the support are respectively fixedly connected to the support, and the first main rocker arm rotates around the first fixed axis, and the second main rocker arm rotates around the second fixed axis, which can ensure that the first main rocker arm and the second main rocker arm can achieve 360-degree rotation relative to the main axis, thereby ensuring that the hinge mechanism can achieve inward folding and outward folding functions in the same bending area.

[0016] In an optional implementation, the pushing end includes a first pushing end and a second pushing end, the first connecting rod includes a first sub-connecting rod and a second sub-connecting rod, and the third connecting rod includes a third sub-connecting rod and a fourth sub-connecting rod;

[0017] The first pushing end of the first main swing rod is rotatably connected to the first end of the first sub-connecting rod, and the second end of the first sub-connecting rod is rotatably connected to the first end of the second connecting rod; the second pushing end of the first main swing rod is rotatably connected to the first end of the second sub-connecting rod, and the second end of the second sub-connecting rod is rotatably connected to the first end of the second connecting rod; and the rotation axis of the second end of the first sub-connecting rod, the rotation axis of the second end of the second sub-connecting rod and the rotation axis of the first end of the second connecting rod are all different;

[0018] The first pushing end of the second main rocker arm is rotationally connected to the first end of the third sub-link, and the second end of the third sub-link is rotationally connected to the first end of the fourth link; the second pushing end of the second main rocker arm is rotationally connected to the first end of the fourth sub-link, and the second end of the fourth sub-link is rotationally connected to the first end of the fourth link; and the rotation axis of the second end of the third sub-link, the rotation axis of the second end of the fourth sub-link and the rotation axis of the first end of the fourth link are all different.

[0019] By having the first pushing end of the first main swing arm rotationally connected to the first end of the first sub-link, the second end of the first sub-link rotationally connected to the first end of the second link, the second pushing end of the first main swing arm rotationally connected to the first end of the second sub-link, the second end of the second sub-link rotationally connected to the first end of the second link, and the first pushing end of the second main swing arm rotationally connected to the first end of the third sub-link, the second end of the third sub-link rotationally connected to the first end of the fourth link, the second pushing end of the second main swing arm rotationally connected to the first end of the fourth sub-link, and the second end of the fourth sub-link rotationally connected to the first end of the fourth link, the motion trajectory of the hinge mechanism can be better controlled to avoid the problem that the components in the hinge mechanism may not move according to the pre-designed route during relative folding or unfolding, resulting in deviation from the motion trajectory or unstable movement.

[0020] In an optional implementation, the pushing end further includes: a third pushing end;

[0021] The first linkage assembly further includes: a fifth link; the third pushing end of the first main swing link is rotatably connected to the first end of the fifth link, the second end of the fifth link is rotatably connected to the second end of the second link and the end of the first screen back link away from the first main swing link, and the rotation axis of the second end of the fifth link, the rotation axis of the second end of the second link and the rotation axis of the end of the first screen back link away from the first main swing link are all the same;

[0022] The second linkage assembly also includes: a sixth link; the third pushing end of the second main swing arm is rotationally connected to the first end of the sixth link, the second end of the sixth link is rotationally connected to the second end of the fourth link and the end of the second screen back panel link away from the second main swing arm, and the rotation axis of the second end of the sixth link, the rotation axis of the second end of the fourth link and the rotation axis of the end of the second screen back panel link away from the second main swing arm are all the same.

[0023] By the third push end of the first main swing rod being rotationally connected to the first end of the fifth link, the second end of the fifth link being rotationally connected to the second end of the second link and the end of the first screen back link away from the first main swing rod, the first screen back link can be clamped between the second link and the fifth link, and the motion trajectory of the first screen back link can be more accurately controlled. By the third push end of the second main swing rod being rotationally connected to the first end of the sixth link, the second end of the sixth link being rotationally connected to the second end of the fourth link and the end of the second screen back link away from the second main swing rod, the second screen back link can be clamped between the fourth link and the sixth link, and the motion trajectory of the second screen back link can be more accurately controlled. Therefore, it can play a role in better controlling the motion trajectory of the hinge mechanism, avoiding the problem that the components in the hinge mechanism (such as the first screen back link and the second screen back link) may not move according to the pre-designed route during the relative folding or unfolding process, and may deviate from the motion trajectory or move unsteadily.

[0024] In an optional implementation, it further includes: a first ring, a second ring, and a plurality of fixing members, wherein the first ring and the second ring each have at least three through holes;

[0025] The first end of the second connecting rod is connected to the first through hole of the at least three through holes of the first collar through the fixing member, the second end of the first sub-connecting rod is connected to the second through hole of the at least three through holes of the first collar through the fixing member, and the second end of the second sub-connecting rod is connected to the third through hole of the at least three through holes of the first collar through the fixing member;

[0026] The first end of the fourth connecting rod is connected to the first through hole of the at least three through holes of the second ring through the fixing member, the second end of the third sub-connecting rod is connected to the second through hole of the at least three through holes of the second ring through the fixing member, and the second end of the fourth sub-connecting rod is connected to the third through hole of the at least three through holes of the second ring through the fixing member.

[0027] In this way, the first collar can play a role in transmitting torque in the relative movement between the first sub-connecting rod, the second sub-connecting rod and the second connecting rod, and can ensure that the rotation axis of the first end of the second connecting rod, the rotation axis of the second end of the first sub-connecting rod and the rotation axis of the second end of the second sub-connecting rod are different. The second collar can play a role in transmitting torque in the relative movement between the third sub-connecting rod, the fourth sub-connecting rod and the fourth connecting rod, and can ensure that the rotation axis of the first end of the fourth connecting rod, the rotation axis of the second end of the third sub-connecting rod and the rotation axis of the second end of the fourth sub-connecting rod are different.

[0028] In an optional implementation, it further includes: a third ring and a fourth ring; the third ring and the fourth ring each have at least two openings, and the at least three through holes of the first ring and the second ring also include a fourth through hole;

[0029] The first opening of the at least two openings of the third ring is rotatably connected to the first fixed shaft, and the second opening of the at least two openings of the third ring is connected to the fourth through hole of the at least three through holes of the first ring through the fixing member;

[0030] The first opening of the at least two openings of the fourth ring is rotationally connected to the second fixed shaft, and the second opening of the at least two openings of the fourth ring is connected to the fourth through hole of the at least three through holes of the second ring through the fixing member.

[0031] In this way, the first opening of the third ring is rotationally connected to the first fixed shaft, the second opening of the third ring is rotationally connected to the fourth through hole of the first ring, and the third ring links the first ring and the first fixed shaft together, so that the first fixed shaft can limit and control the movement of the first linkage assembly. The first opening of the fourth ring is rotationally connected to the second fixed shaft, the second opening of the fourth ring is rotationally connected to the fourth through hole of the second ring, and the fourth ring links the second ring and the second fixed shaft together, so that the second fixed shaft can limit and control the movement of the second linkage assembly. Therefore, it can play a role in better controlling the movement trajectory of the hinge mechanism, avoiding the problem that the components in the hinge mechanism may not move according to the pre-designed route during the relative folding or unfolding process, and may deviate from the movement trajectory or move unsteadily.

[0032] In an optional implementation, the second connecting rod and the fourth connecting rod are bent, so that the second connecting rod and the fourth connecting rod can avoid the other connecting rods in the first connecting rod assembly and the second connecting rod assembly and the mutual movement between the other connecting rods.

[0033] In an optional implementation, the rotating end and the pushing end of the first main swing arm are located at an end of the first main swing arm close to the main axis, and the sliding end of the first main swing arm is located at an end of the first main swing arm away from the main axis;

[0034] The rotating end and the pushing end of the second main swing arm are located at an end of the first main swing arm close to the main axis, and the sliding end of the second main swing arm is located at an end of the first main swing arm away from the main axis.

[0035] In an optional implementation, a first guide rail is provided on one of the two opposite side surfaces of the first main swing arm and the first screen back panel connecting rod, and a first sliding member is provided on the other side surface, and the first sliding member slides in the first guide rail. In this way, the sliding connection between the first main swing arm and the first screen back panel connecting rod can be achieved through the sliding relationship between the first sliding member and the first guide rail.

[0036] A second guide rail is provided on one of the two opposite side surfaces of the second main swing arm and the second screen back plate connecting rod, and a second sliding member is provided on the other side surface, and the second sliding member slides in the second guide rail. In this way, the sliding connection between the second main swing arm and the second screen back plate connecting rod can be achieved through the sliding relationship between the second sliding member and the second guide rail member.

[0037] In an optional implementation, the first main swing arm and the second main swing arm are staggered in a direction parallel to the main shaft axis. This ensures that the first main swing arm and the second main swing arm do not interfere with each other during rotation, thereby ensuring the stability of the folding or unfolding of the first main swing arm and the second main swing arm. In addition, the staggered arrangement of the first main swing arm and the second main swing arm can also save space occupied by the hinge mechanism.

[0038] A second aspect of an embodiment of the present application provides a foldable electronic device, comprising: a first housing, a second housing, and any one of the hinge mechanisms described above;

[0039] The first shell and the second shell are located on both sides of the main shaft, the first shell is fixedly connected to the first main swing rod, and the second shell is fixedly connected to the second main swing rod;

[0040] It also includes: a flexible screen body; the flexible screen body covers the hinge mechanism, the first shell and the second shell.

[0041] The foldable electronic device provided in the embodiment of the present application can drive the first shell and the second shell to fold or unfold by folding or unfolding the first main swing arm and the second main swing arm relative to the main axis. The first main swing arm of the hinge mechanism rotates around the main axis, and the first main swing arm pulls the various links in the first linkage assembly to move and causes the various links to interact with each other, thereby driving the relative sliding between the first screen back panel link and the first main swing arm. Similarly, the second main swing arm rotates around the main axis, and the second main swing arm pulls the various links in the second linkage assembly to move and causes the various links to interact with each other, thereby driving the relative sliding between the second screen back panel link and the second main swing arm, which can ensure that the first main swing arm and the second main swing arm can achieve 360-degree rotation relative to the main axis, thereby ensuring that the hinge mechanism of the foldable electronic device can achieve inward and outward folding functions in the same bending area.

[0042] In an optional implementation, one end of the flexible screen body is fixedly connected to the first screen back panel connecting rod in the hinge mechanism, which is connected to one end of the first main rocker arm, and the other end of the flexible screen body is fixedly connected to the second screen back panel connecting rod in the hinge mechanism, which is connected to one end of the second main rocker arm.

[0043] The hinge mechanism of the foldable electronic device can adjust the length of the smooth curve between one end of the first screen back panel connecting rod connected to the flexible screen body (i.e., the first intangent point) and one end of the second screen back panel connecting rod connected to the flexible screen body (i.e., the second intangent point) (i.e., the length of the fitting line formed by the line connecting the first intangent point and the second intangent point), so that the length of one end of the first screen back panel connecting rod and the second screen back panel connecting rod connected to the flexible screen body (i.e., the length of the fitting line formed by the line connecting the first intangent point and the second intangent point) remains basically unchanged in the folded state and the unfolded state, thereby making the length of the flexible screen body in the folded state equal to the length of the flexible screen body in the unfolded state, effectively avoiding pulling of the flexible screen body during the unfolding process, and further avoiding damage to the flexible screen body during the folding or unfolding process of the foldable electronic device, thereby improving the display effect and service life of the foldable electronic device.

[0044] These and other aspects, implementation forms and advantages of the exemplary embodiments will become apparent from the embodiments described below in conjunction with the accompanying drawings. However, it should be understood that the description and the accompanying drawings are only for illustration and are not intended to be a definition of limitations on the embodiments of the present application, as described in the accompanying claims. Other aspects and advantages of the embodiments of the present application will be described in the following description, and some will be apparent from the description or will be learned through the practice of the embodiments of the present application. In addition, the various aspects and advantages of the embodiments of the present application can be achieved and obtained by the means and combinations specifically indicated in the attached claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A schematic diagram of the three-dimensional structure of a hinge mechanism provided in one embodiment of the present application;

[0046] Figure 2 for Figure 1 An exploded schematic diagram of the hinge mechanism shown;

[0047] Figure 3 A schematic diagram of the structure of a first main swing arm in a hinge mechanism provided in an embodiment of the present application;

[0048] Figure 4 A schematic structural diagram of a main shaft assembly in a hinge mechanism provided in an embodiment of the present application;

[0049] Figure 5 A schematic diagram of the structure of a second ring in a hinge mechanism provided in an embodiment of the present application;

[0050] Figure 6 A schematic diagram of the structure of a fourth ring in a hinge mechanism provided in an embodiment of the present application;

[0051] Figure 7 A schematic diagram of the structure of a hinge mechanism in an initial state provided by an embodiment of the present application;

[0052] Figure 8 A schematic diagram of the structure of a hinge mechanism provided in an embodiment of the present application in an unfolded state (unfolded 90 degrees);

[0053] Fig. 9 A schematic diagram of the structure of a hinge mechanism provided in an embodiment of the present application in an unfolded state (unfolded 180 degrees);

[0054] Fig.10 A schematic diagram of the structure of a hinge mechanism provided in an embodiment of the present application in an unfolded state (unfolded 270 degrees);

[0055] Fig.11 This is a schematic structural diagram of a hinge mechanism provided in an embodiment of the present application in an unfolded state (360 degrees unfolded).

[0056] Description of reference numerals:

[0057] 100-hinge mechanism; 10-main axis; 101-support; 102-first fixed axis; 103-second fixed axis; 20-first main swing rod; 201-rotation end; 202-pushing end; 2021-first pushing end; 2022-second pushing end; 2023-third pushing end; 203-sliding end; 30-second main swing rod; 401-first connecting rod; 4011-first sub-connecting rod; 4012-second sub-connecting rod; 402-second connecting rod; 403-fifth connecting rod; 501-third connecting rod; 501 1-third sub-connecting rod; 5012-fourth sub-connecting rod; 502-fourth connecting rod; 503-sixth connecting rod; 601-first screen back panel connecting rod; 602-second screen back panel connecting rod; 701-first ring; 702-second ring; 7021-first through hole; 7022-second through hole; 7023-third through hole; 7024-fourth through hole; 703-third ring; 704-fourth ring; 7041-first opening; 7042-second opening; 801-first inscribed point; 802-second inscribed point. DETAILED DESCRIPTION

[0058] The terms used in the implementation method part of this application are only used to explain the specific embodiments of this application, and are not intended to limit this application. The implementation method of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0059] As flexible screen technology matures, the display mode of electronic devices has undergone tremendous changes. One of them is the emergence of foldable mobile phones, computers and other electronic devices. The display screens of foldable electronic devices can flexibly switch modes according to different usage scenarios. At the same time, they have a high screen-to-body ratio and clarity. For example, when the phone is folded, it can be only the size of a traditional phone, which is convenient to carry, and when unfolded, it can have the display size of a tablet. These features make foldable electronic devices one of the most popular products.

[0060] Taking the state of a foldable electronic device that can be folded into two layers as an example, at present, foldable electronic devices such as foldable mobile phones generally include a hinge mechanism, which is the core mechanism for realizing the folding and unfolding of the foldable mobile phone. The hinge mechanism may include a hinge mechanism and two shells, wherein the two shells are respectively located on both sides of the axis of the main shaft of the hinge mechanism, and the first shell and the second shell of the two shells are respectively connected to the main shaft through the hinge mechanism, thereby realizing the folding and unfolding of the first shell and the second shell, and the flexible screen of the foldable electronic device generally covers the main shaft and the two shells.

[0061] When the first shell and the second shell rotate toward each other to a folded state, the flexible screen of the foldable electronic device is also in a folded state and is located between the first shell and the second shell or outside the first shell and the second shell. For example, when the foldable electronic device is an inner folding electronic device, the flexible screen is in a folded state and is located between the first shell and the second shell; when the foldable electronic device is an outer folding electronic device, the flexible screen is in a folded state and is located outside the first shell and the second shell. When the first shell and the second shell rotate away from each other to an unfolded state, until the two shells are on the same horizontal plane, the flexible screen of the foldable electronic device is also in an unfolded state.

[0062] However, the use of foldable electronic devices in the prior art is limited. Inner folding electronic devices can only achieve a single inner folding, and outer folding electronic devices can only achieve a single outer folding, and the functions of inner folding and outer folding cannot be taken into account at the same time. Alternatively, the prior art is to set two outer folding parts (for example, two hinge mechanisms) on the foldable electronic device to achieve inner folding and outer folding respectively, so as to achieve the effect of satisfying the inner folding and outer folding functions. However, if there are two bending parts, the screen cannot be better protected, and the thickness of the foldable electronic device will be too large.

[0063] In order to solve the above problems, the embodiments of the present application provide a hinge mechanism and a foldable electronic device, through the folding or unfolding of the first main swing arm and the second main swing arm of the hinge mechanism relative to the main axis, the first shell and the second shell can be driven to fold or unfold, the first main swing arm of the hinge mechanism rotates around the main axis, the first main swing arm pulls the various links in the first linkage assembly to move and causes the various links to interact with each other, thereby driving the relative sliding between the first screen back panel link and the first main swing arm, similarly, the second main swing arm rotates around the main axis, the second main swing arm pulls the various links in the second linkage assembly to move and causes the various links to interact with each other, thereby driving the relative sliding between the second screen back panel link and the second main swing arm, which can ensure that the first main swing arm and the second main swing arm can achieve 360-degree rotation relative to the main axis, thereby ensuring that the hinge mechanism of the foldable electronic device can achieve inward folding and outward folding functions in the same bending area, thereby improving the user experience and improving the stability of the hinge mechanism.

[0064] The hinge mechanism and the structure of the foldable electronic device provided in the embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0065] Reference Figure 1 or Figure 2As shown, the hinge mechanism 100 provided in the embodiment of the present application may include: a main shaft 10 and a first main rocker arm 20 and a second main rocker arm 30 located on both sides of the main shaft 10, a first linkage assembly and a second linkage assembly located on both sides of the main shaft 10, and a first screen back panel connecting rod 601 and a second screen back panel connecting rod 602 located on both sides of the main shaft 10.

[0066] The first main swing rod 20 and the second main swing rod 30 may include a rotating end 201, a pushing end 202 and a sliding end 203 (see Figure 3 As shown in FIG. 4 , the first linkage assembly may include a first link 401 and a second link 402, and the second linkage assembly may include a third link 501 and a fourth link 502. Figure 1 As shown, the rotating end 201 of the first main swing rod 20 is rotationally connected to the main shaft 10, the pushing end 202 is rotationally connected to the first end of the first connecting rod 401, the sliding end 203 is slidingly connected to the first screen back plate connecting rod 601, and the pushing end 202 and the rotating end 201 have different rotation axes. The second end of the first connecting rod 401 is rotationally connected to the first end of the second connecting rod 402, and the second end of the second connecting rod 402 is rotationally connected to an end of the first screen back plate connecting rod 601 away from the first main swing rod 20, and the rotation axis of the second end of the first connecting rod 401 is different from the rotation axis of the first end of the second connecting rod 402.

[0067] Similarly, the rotating end 201 of the second main swing rod 30 is rotationally connected to the main shaft 10, the pushing end 202 is rotationally connected to the first end of the third connecting rod 501, the sliding end 203 is slidingly connected to the second screen back plate connecting rod 602, and the pushing end 202 and the rotating end 201 have different rotation axes. The second end of the third connecting rod 501 is rotationally connected to the first end of the fourth connecting rod 502, the second end of the fourth connecting rod 502 is rotationally connected to an end of the second screen back plate connecting rod 602 away from the second main swing rod 30, and the rotation axis of the second end of the third connecting rod 501 is different from the rotation axis of the first end of the fourth connecting rod 502.

[0068] Through the above arrangement, the first main swing bar 20 of the hinge mechanism 100 can rotate around the main axis 10, and the first main swing bar 20 pulls each link in the first linkage assembly to move and makes each link mutually constrained, thereby driving the relative sliding between the first screen back panel link 601 and the first main swing bar 20. Similarly, the second main swing bar 30 rotates around the main axis 10, and the second main swing bar 30 pulls each link in the second linkage assembly to move and makes each link mutually constrained, thereby driving the relative sliding between the second screen back panel link 602 and the second main swing bar 30, and the inner folding and outer folding functions can be realized in the same bending area, thereby improving the user experience. Compared with the prior art that sets two bending places to realize the inner folding and outer folding functions, the stability of the hinge mechanism 100 and the foldable electronic device can also be improved to a certain extent.

[0069] In the embodiments of this application, refer to Figure 4 As shown, the main shaft 10 may include: a support 101 and a first fixed shaft 102 and a second fixed shaft 103 fixedly connected to the support 101, wherein the first fixed shaft 102 and the second fixed shaft 103 are respectively located on both sides of the central axis of the support 101, and the rotating end 201 of the first main swing arm 20 rotates around the first fixed shaft 102, and the rotating end 201 of the second main swing arm 30 rotates around the second fixed shaft 103. By the first fixed shaft 102 and the second fixed shaft 103 located on both sides of the central axis of the support 101 being respectively fixedly connected to the support 101, and the first main swing arm 20 rotating around the first fixed shaft 102, and the second main swing arm 30 rotating around the second fixed shaft 103, it is possible to ensure that the first main swing arm 20 and the second main swing arm 30 can achieve 360-degree rotation relative to the main shaft 10, thereby ensuring that the hinge mechanism 100 can achieve the functions of inward folding and outward folding in the same bending area.

[0070] In addition, through the rotational connection between the rotating end 201 of the first main swing bar 20 and the first fixed axis 102, and the rotational connection between the rotating end 201 of the second main swing bar 30 and the second fixed axis 103. In this way, the rotation reliability of the first main swing bar 20 and the second main swing bar 30 is improved, and the first main swing bar 20 and the second main swing bar 30 drive the first screen back panel connecting rod 601 and the second screen back panel connecting rod 602 to avoid jamming or shaking during the opening and closing process. In addition, the rotational connection is achieved through such a solid shaft matching method, driving the hinge mechanism 100 to achieve 360-degree opening and closing, which has higher motion stability than the existing virtual axis, and greatly improves the practicality of the foldable electronic device (bending resistance and durability, etc.).

[0071] In some embodiments, the pushing end 202 may include a first pushing end 2021 and a second pushing end 2022, the first connecting rod 401 may include a first sub-connecting rod 4011 and a second sub-connecting rod 4012, and the third connecting rod 501 may include a third sub-connecting rod 5011 and a fourth sub-connecting rod 5012. Figure 1 As shown, the first pushing end 2021 of the first main rocker arm 20 is rotationally connected to the first end of the first sub-link 4011, the second end of the first sub-link 4011 is rotationally connected to the first end of the second link 402, the second pushing end 2022 of the first main rocker arm 20 is rotationally connected to the first end of the second sub-link 4012, the second end of the second sub-link 4012 is rotationally connected to the first end of the second link 402, and the rotation axis of the second end of the first sub-link 4011, the rotation axis of the second end of the second sub-link 4012 and the rotation axis of the first end of the second link 402 are all different.

[0072] Similarly, the first push end 2021 of the second main swing rod 30 is rotationally connected to the first end of the third sub-link 5011, the second end of the third sub-link 5011 is rotationally connected to the first end of the fourth link 502, the second push end 2022 of the second main swing rod 30 is rotationally connected to the first end of the fourth sub-link 5012, the second end of the fourth sub-link 5012 is rotationally connected to the first end of the fourth link 502, and the rotation axis of the second end of the third sub-link 5011, the rotation axis of the second end of the fourth sub-link 5012 and the rotation axis of the first end of the fourth link 502 are all different. In this way, the motion trajectory of the hinge mechanism 100 can be better controlled to avoid the problem that the components in the hinge mechanism 100 may not move according to the pre-designed route during the relative folding or unfolding process, and the problem of deviating from the motion trajectory or unstable motion occurs.

[0073] In some embodiments, the push end 202 may further include: a third push end 2023. The first linkage assembly may further include: a fifth connecting rod 403, continue to refer to Figure 1 As shown, the third push end 2023 of the first main swing bar 20 is rotationally connected to the first end of the fifth link 403, the second end of the fifth link 403 is rotationally connected to the second end of the second link 402 and the end of the first screen back link 601 away from the first main swing bar 20, and the rotation axis of the second end of the fifth link 403, the rotation axis of the second end of the second link 402 and the rotation axis of the end of the first screen back link 601 away from the first main swing bar 20 are all the same. By the third push end 2023 of the first main swing bar 20 being rotationally connected to the first end of the fifth link 403, the second end of the fifth link 403 being rotationally connected to the second end of the second link 402 and the end of the first screen back link 601 away from the first main swing bar 20, the first screen back link 601 can be clamped between the second link 402 and the fifth link 403, and the motion trajectory of the first screen back link 601 can be more accurately controlled.

[0074] The second linkage assembly may further include: a sixth link 503, the third push end 2023 of the second main swing arm 30 is rotationally connected to the first end of the sixth link 503, the second end of the sixth link 503 is rotationally connected to the second end of the fourth link 502 and the end of the second screen back link 602 away from the second main swing arm 30, and the rotation axis of the second end of the sixth link 503, the rotation axis of the second end of the fourth link 502 and the rotation axis of the end of the second screen back link 602 away from the second main swing arm 30 are all the same. By the third push end 2023 of the second main swing arm 30 being rotationally connected to the first end of the sixth link 503, the second end of the sixth link 503 being rotationally connected to the second end of the fourth link 502 and the end of the second screen back link 602 away from the second main swing arm 30, the second screen back link 602 can be clamped between the fourth link 502 and the sixth link 503, and the motion trajectory of the second screen back link 602 can be more accurately controlled. Therefore, it can play a role in better controlling the movement trajectory of the hinge mechanism 100, and avoid the problem that the components in the hinge mechanism 100 (such as the first screen back panel connecting rod 601 and the second screen back panel connecting rod 602) may not move along the pre-designed route during the relative folding or unfolding process, resulting in deviation from the movement trajectory or unstable movement.

[0075] It should be noted that the first connecting rod assembly and the second connecting rod assembly can enable the first main rocker arm 20 and the second main rocker arm 30, the first screen back panel connecting rod 601 and the second screen back panel connecting rod 602 on both sides of the main shaft 10 to influence each other to achieve synchronous linkage, and further limit the displacement of each connecting rod in the first connecting rod assembly (for example, the first connecting rod 401, the second connecting rod 402 and the fifth connecting rod 403) and each connecting rod in the second connecting rod assembly (for example, the third connecting rod 501, the fourth connecting rod 502 and the sixth connecting rod 503) during the movement, so as to ensure that the movement trajectory of the entire hinge mechanism 100 is more stable.

[0076] In the embodiment of the present application, the hinge mechanism 100 may further include: a first ring 701, a second ring 702 (see Figure 5 As shown in FIG. 1 ) and a plurality of fixing members, the first ring 701 and the second ring 702 may each have at least three through holes. Figure 5 As shown, the second ring 702 may have at least a first through hole 7021, a second through hole 7022 and a third through hole 7023. Figure 1As shown, the first end of the second connecting rod 402 is connected to the first through hole 7021 of the at least three through holes of the first collar 701 through a fixing member, the second end of the first sub-connecting rod 4011 is connected to the second through hole 7022 of the at least three through holes of the first collar 701 through a fixing member, and the second end of the second sub-connecting rod 4012 is connected to the third through hole 7023 of the at least three through holes of the first collar 701 through a fixing member. The first end of the fourth connecting rod 502 is connected to the first through hole 7021 of the at least three through holes of the second collar 702 through a fixing member, the second end of the third sub-connecting rod 5011 is connected to the second through hole 7022 of the at least three through holes of the second collar 702 through a fixing member, and the second end of the fourth sub-connecting rod 5012 is connected to the third through hole 7023 of the at least three through holes of the second collar 702 through a fixing member.

[0077] In this way, the first collar 701 can play a role in transmitting torque in the relative motion between the first sub-connecting rod 4011, the second sub-connecting rod 4012 and the second connecting rod 402, and can ensure that the rotation axis of the first end of the second connecting rod 402, the rotation axis of the second end of the first sub-connecting rod 4011 and the rotation axis of the second end of the second sub-connecting rod 4012 are not the same. The second collar 702 can play a role in transmitting torque in the relative motion between the third sub-connecting rod 5011, the fourth sub-connecting rod 5012 and the fourth connecting rod 502, and can ensure that the rotation axis of the first end of the fourth connecting rod 502, the rotation axis of the second end of the third sub-connecting rod 5011 and the rotation axis of the second end of the fourth sub-connecting rod 5012 are not the same.

[0078] In addition, the hinge mechanism 100 may further include: a third ring 703 and a fourth ring 704 (see Figure 6 As shown), the third ring 703 and the fourth ring 704 each have at least two openings, illustratively, as Figure 6 As shown, the fourth ring 702 may have a first opening 7041 and a second opening 7042. The at least three through holes of the first ring 701 and the second ring 702 also include a fourth through hole 7024 (see Figure 5 ). Among them, the first opening 7041 of the at least two openings of the third ring 703 is rotatably connected to the first fixed shaft 102, and the second opening 7042 of the at least two openings of the third ring 703 is connected to the fourth through hole 7024 of the at least three through holes of the first ring 701 through a fixing member. The first opening 7041 of the at least two openings of the fourth ring 704 is rotatably connected to the second fixed shaft 103, and the second opening 7042 of the at least two openings of the fourth ring 704 is connected to the fourth through hole 7024 of the at least three through holes of the second ring 702 through a fixing member.

[0079] It is understandable that the fixing part can be a pin, a rivet or other fixing part, and the inner diameters of the first through hole 7021, the second through hole 7022, the third through hole 7023, the fourth through hole 7024, the first opening 7041 and the second opening 7042 can be slightly smaller than the outer diameter of the fixing part so as to be able to rotate.

[0080] In this way, the first opening 7041 of the third ring 703 is connected to the first fixed shaft 102 in rotation, the second opening 7042 of the third ring 703 is connected to the fourth through hole 7024 of the first ring 701 in rotation, and the third ring 703 links the first ring 701 and the first fixed shaft 102 together, so that the first fixed shaft 102 can limit and control the movement of the first linkage assembly. The first opening 7041 of the fourth ring 704 is connected to the second fixed shaft 103 in rotation, the second opening 7042 of the fourth ring 704 is connected to the fourth through hole 7024 of the second ring 702 in rotation, and the fourth ring 704 links the second ring 702 and the second fixed shaft 103 together, so that the second fixed shaft 103 can limit and control the movement of the second linkage assembly. Therefore, it can better control the movement trajectory of the hinge mechanism 100, and avoid the problem that the components in the hinge mechanism 100 may not move according to the pre-designed route during the relative folding or unfolding process, and may deviate from the movement trajectory or move unsteadily.

[0081] In addition, it can be understood that the rotating end 201 of the first main swing arm 20 and the second main swing arm 30, the pushing ends 202 (the first pushing end 2021, the second pushing end 2022 and the third pushing end 2023) of the first main swing arm 20 and the second main swing arm 30, the sliding end 203 of the first main swing arm 20 and the second main swing arm 30, the first end of the first sub-connecting rod 4011, the second end of the first sub-connecting rod 4011, the first end of the second sub-connecting rod 4012, the second end of the second sub-connecting rod 4012, the first end of the second connecting rod 402, the second end of the second connecting rod 402, the first end of the fifth connecting rod 403, the second end of the fifth connecting rod 403, the first end of the third sub-connecting rod 5011, the second end of the third sub-connecting rod 5011, the The first end of the four-sub-link 5012, the second end of the fourth sub-link 5012, the first end of the fourth link 502, the second end of the fourth link 502, the first end of the sixth link 503, the second end of the sixth link 503, the end of the first screen backplane link 601 away from the first main swing rod 20, the end of the first screen backplane link 601 close to the first main swing rod 20, the end of the second screen backplane link 602 away from the second main swing rod 30, and the end of the second screen backplane link 602 close to the second main swing rod 30 can also be provided with through holes, and the rotation connection between each other is realized by fixing parts, wherein the fixing parts can be fixing parts such as pins and rivets, and the inner diameter of the through hole can be slightly smaller than the outer diameter of the fixing parts, as long as the rotation can be realized. The embodiment of the present application adopts the connecting rod pin structure as the main movement mode, which is stable in movement, simple in structure, and easy to manufacture and assemble.

[0082] When the hinge mechanism 100 is in the folded state, Figure 7 As shown, the hinge mechanism 100 is in the initial state (i.e., the inwardly folded state). Figures 8 to 11 As shown, the first main swing rod 20 and the second main swing rod 20 are respectively extended around the first fixed axis 102 and the second fixed axis 103, and the first screen back plate link 601 and the second screen back plate link 602 slide relative to the main swing rod on the same side by pulling the links in the first linkage assembly and the second linkage assembly and the interaction between the links. At the same time, when the first screen back plate link 601 slides relative to the first main swing rod 20, and the second screen back plate link 602 slides relative to the second main swing rod 30, the swing angle of the first screen back plate link 601 uniquely corresponds to its sliding position on the first main swing rod 20, and the swing angle of the second screen back plate link 602 uniquely corresponds to its sliding position on the second main swing rod 30, so that the length of the mechanism can be kept constant. It should be noted that the length of the mechanism refers to the length of the smooth curve from the first inscribed point 801 of the free end of the first screen back plate link 601 to the second inscribed point 802 of the free end of the second screen back plate link 602.

[0083] Among them, Figure 8 As shown, the hinge mechanism 100 is in a 90-degree unfolded state. At this time, the hinge mechanism 100 is in an inward folded state. The length of the smooth curve between the first intangent point 801 on the first screen back panel link 601 and the second intangent point 802 on the second screen back panel link 602 (i.e., the length of the curve fitted by the first intangent point 801 and the second intangent point 802 along the length direction of the first screen back panel link 601 and the second screen back panel link 602) is equal to Figure 7 In the initial state shown, the length of the smooth curve between the first intangent point 801 on the first screen back panel connecting rod 601 and the second intangent point 802 on the second screen back panel connecting rod 602 is consistent.

[0084] like Fig. 9 As shown, the hinge mechanism 100 is in a 180-degree unfolded state, that is, the hinge mechanism 100 is unfolded to the maximum angle state. At this time, the length of the smooth curve between the first inscribed point 801 on the first screen back panel link 601 and the second inscribed point 802 on the second screen back panel link 602 (that is, the length of the curve fitted by the first inscribed point 801 and the second inscribed point 802 along the length direction of the first screen back panel link 601 and the second screen back panel link 602) is equal to Figure 7 In the initial state shown, the length of the smooth curve between the first intangent point 801 on the first screen back panel connecting rod 601 and the second intangent point 802 on the second screen back panel connecting rod 602 is consistent.

[0085] Likewise, Fig.10 As shown in FIG. 1 , the hinge mechanism 100 is in a 270-degree unfolded state, and at this time, the hinge mechanism 100 is in an outward folded state. Fig.11 As shown, the hinge mechanism 100 is in the 360-degree unfolded state, and at this time, the hinge mechanism 100 is in the outward folded state. When the hinge mechanism 100 is in the 270-degree unfolded state and the hinge mechanism 100 is in the 360-degree unfolded state, the length of the smooth curve between the first inscribed point 801 on the first screen back panel link 601 and the second inscribed point 802 on the second screen back panel link 602 (i.e., the length of the curve fitted by the first inscribed point 801 and the second inscribed point 802 along the length direction of the first screen back panel link 601 and the second screen back panel link 602) is still the same as the length of the smooth curve between the first inscribed point 801 and the second inscribed point 802 along the length direction of the first screen back panel link 601 and the second screen back panel link 602. Figure 7 In the initial state shown, the length of the smooth curve between the first intangent point 801 on the first screen back panel connecting rod 601 and the second intangent point 802 on the second screen back panel connecting rod 602 is consistent.

[0086] In addition, in a possible implementation, the second connecting rod 402 and the fourth connecting rod 502 may be bent. In this way, the second connecting rod 402 and the fourth connecting rod 502 can avoid the other connecting rods in the first connecting rod 401 assembly and the second connecting rod 402 assembly and the mutual movement between the other connecting rods.

[0087] It should be noted that in the embodiments of the present application, Figure 1 or Figure 2 As shown, the rotating end 201 and the pushing end 202 of the first main swing arm 20 are located at one end of the first main swing arm 20 close to the main axis 10, and the sliding end 203 of the first main swing arm 20 is located at one end of the first main swing arm 20 away from the main axis 10. The rotating end 201 and the pushing end 202 of the second main swing arm 30 are located at one end of the first main swing arm 20 close to the main axis 10, and the sliding end 203 of the second main swing arm 30 is located at one end of the first main swing arm 20 away from the main axis 10.

[0088] In addition, as an optional embodiment, a first guide rail (not shown in the figure) is provided on one of the two opposite side surfaces of the first main swing arm 20 and the first screen back panel connecting rod 601, and a first sliding member (not shown in the figure) is provided on the other side surface, and the first sliding member slides in the first guide rail. In this way, the sliding connection between the first sliding member and the first guide rail member can be achieved. A second guide rail is provided on one of the two opposite side surfaces of the second main swing arm 30 and the second screen back panel connecting rod 602, and a second sliding member is provided on the other side surface, and the second sliding member slides in the second guide rail. In this way, the sliding connection between the second main swing arm 30 and the second screen back panel connecting rod 602 can be achieved through the sliding relationship between the second sliding member and the second guide rail member.

[0089] Specifically, the first guide rail and the second guide rail can be slide grooves, the first sliding member and the second sliding member can be protrusions formed on the first main rocker 20 and the second main rocker 30 respectively, or the first sliding member and the second sliding member can be pins respectively, and the protrusions or pins can slide in the slide grooves.

[0090] Furthermore, in some embodiments, at least one groove wall of the first guide rail may also have a first limiting groove, and the first sliding member may also have a first engaging portion, at least a portion of the first engaging portion extends into the first limiting groove, so that when the first main swing arm 20 and the first structural member slide relative to each other, the range of motion of the first sliding member can be limited to prevent the first sliding member from falling off from the first guide rail. Similarly, at least one groove wall of the second guide rail may also have a second limiting groove, and the second sliding member may also have a second engaging portion, at least a portion of the second engaging portion extends into the second limiting groove, so that when the second main swing arm 30 and the second structural member slide relative to each other, the range of motion of the second sliding member can be limited to prevent the second sliding member from falling off from the second slide rail.

[0091] In an optional implementation, the first main swing arm 20 and the second main swing arm 30 are staggered in a direction parallel to the axis of the main shaft 10. In this way, it can be ensured that the first main swing arm 20 and the second main swing arm 30 will not interfere with each other during the rotation process, thereby ensuring the stability of the folding or unfolding of the first main swing arm 20 and the second main swing arm 30. In addition, the staggered arrangement of the first main swing arm 20 and the second main swing arm 30 can also save the space occupied by the hinge mechanism 100.

[0092] On the basis of the above embodiments, the embodiment of the present application further provides a foldable electronic device, taking the foldable electronic device as a foldable screen mobile phone as an example, the foldable screen mobile phone may include a first shell, a second shell and a hinge mechanism 100, the first shell and the second shell are located on both sides of the axis of the main shaft 10, and the first shell and the second shell can be folded or unfolded by the hinge mechanism 100. Among them, the first shell is fixedly connected to the first main swing arm 20, and the second shell is fixedly connected to the second main swing arm 30.

[0093] The foldable screen mobile phone may further include: a flexible screen body, wherein the flexible screen body may cover the hinge mechanism 100, the first shell and the second shell, and the hinge mechanism 100 is used to fold or unfold the flexible screen body. Specifically, the first shell and the second shell of the hinge mechanism 100 are folded or unfolded by the hinge mechanism 100, thereby causing the flexible screen body thereon to be folded or unfolded accordingly.

[0094] The foldable electronic device provided in the embodiment of the present application, by setting the flexible screen body on the surface of the above-mentioned hinge mechanism 100, ensures that the length of the arc formed on the surface of the hinge mechanism 100 is always in a consistent state with the length of the flexible screen body when the hinge mechanism 100 drives the flexible screen body to unfold, thereby ensuring that the hinge mechanism 100 will not generate external force interference on the flexible screen body, thereby avoiding damage to the flexible screen body during the unfolding process and extending the service life of the foldable screen device.

[0095] In addition, one end of the flexible screen body is fixedly connected to one end of the first screen back panel connecting rod 601 in the hinge mechanism 100 connected to the first main swing rod 20, and the other end of the flexible screen body is fixedly connected to one end of the second screen back panel connecting rod 602 in the hinge mechanism 100 connected to the second main swing rod 30. In other words, the end of the first screen back panel connecting rod 601 in the hinge mechanism 100 connected to the first main swing rod 20 in the hinge mechanism 100 in a sliding manner can be fixedly connected to one end of the flexible screen body, and the end of the second screen back panel connecting rod 602 in the hinge mechanism 100 connected to the second main swing rod 30 in the hinge mechanism 100 in a sliding manner can be fixedly connected to the other end of the flexible screen body.

[0096] The flexible screen body may be fixedly connected to the first screen back panel connecting rod 601 and the second screen back panel connecting rod 602 by bonding.

[0097] In an embodiment of the present application, when the first shell and the second shell are rotated to the unfolded state, the first screen back panel connecting rod 601 and the second screen back panel connecting rod 602 are located in the same plane as the main axis 10, and the flexible screen body can be laid on the first screen back panel connecting rod 601 and the second screen back panel connecting rod 602, wherein the first screen back panel connecting rod 601 and the second screen back panel connecting rod 602 can provide good back support for the flexible screen body, reduce the phenomenon of uneven screen after the flexible screen body is changed from the folded state to the unfolded state, and improve the display effect and touch sensitivity of the flexible screen body.

[0098] In the embodiment of the present application, the hinge mechanism 100 of the foldable electronic device can adjust the length of the smooth curve between the end of the first screen back panel link 601 connected to the flexible screen body (i.e., the first intangent point 801) and the end of the second screen back panel link 602 connected to the flexible screen body (i.e., the second intangent point 802) (i.e., the length of the fitting line formed by the connection between the first intangent point 801 and the second intangent point 802), so that the length of the side of the first screen back panel link 601 and the second screen back panel link 602 connected to the flexible screen body (i.e., the length of the side of the first screen back panel link 601 and the second screen back panel link 602 connected to the flexible screen body in the folded state and the unfolded state (i.e., The length of the fitting line formed by the line connecting the first inscribed point 801 and the second inscribed point 802 remains basically unchanged, so that the length of the flexible screen body when in the folded state is equal to the length of the flexible screen body when in the unfolded state (that is, the length of the mechanism can be kept consistent during the 360-degree opening and closing process), effectively avoiding the pulling of the flexible screen body during the unfolding process, reducing the burden of the hinge mechanism 100 on the flexible screen body 100, and thus avoiding damage to the flexible screen body during the folding or unfolding process of the foldable electronic device, effectively improving the display effect and service life of the foldable electronic device.

[0099] It can be understood that the hinge mechanism 100 provided in the embodiment of the present application can also be provided with a synchronous gear, so that the connecting rod mechanism located on both sides of the axis of the main shaft 10 can achieve synchronous movement, that is, the opening and closing angles of the first shell and the second shell are consistent, and synchronous rotation can be achieved, thereby improving the linkage of the hinge mechanism 100 and reducing errors.

[0100] It should be noted that the foldable electronic device of the embodiment of the present application may include but is not limited to mobile phones, tablet computers, laptop computers, ultra-mobile personal computers (UMPCs), handheld computers, walkie-talkies, netbooks, POS machines, personal digital assistants (PDAs), wearable devices, virtual reality devices, and other foldable mobile or fixed terminals.

[0101] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0102] In the embodiments of the present application, the devices or elements referred to or implied must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise precisely and specifically specified.

[0103] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application have been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A hinge mechanism, applied to a foldable electronic device, characterized in that: include: A main shaft and a first main swing rod and a second main swing rod located on both sides of the main shaft, a first linkage assembly and a second linkage assembly located on both sides of the main shaft, and a first screen back plate connecting rod and a second screen back plate connecting rod located on both sides of the main shaft; Wherein, the first main swing rod and the second main swing rod include a rotating end, a pushing end and a sliding end, the first linkage assembly includes a first connecting rod and a second connecting rod, and the second linkage assembly includes a third connecting rod and a fourth connecting rod; The rotating end of the first main swing arm is rotationally connected to the main shaft, the pushing end is rotationally connected to the first end of the first connecting rod, the sliding end is slidingly connected to the first screen back panel connecting rod, and the pushing end and the rotating end have different rotation axes; The second end of the first connecting rod is rotatably connected to the first end of the second connecting rod, the second end of the second connecting rod is rotatably connected to an end of the first screen back plate connecting rod away from the first main swing rod, and the rotation axis of the second end of the first connecting rod is different from the rotation axis of the first end of the second connecting rod; The rotating end of the second main swing arm is rotationally connected to the main shaft, the pushing end is rotationally connected to the first end of the third connecting rod, the sliding end is slidingly connected to the second screen back plate connecting rod, and the pushing end and the rotating end have different rotation axes; The second end of the third connecting rod is rotationally connected to the first end of the fourth connecting rod, the second end of the fourth connecting rod is rotationally connected to an end of the second screen back panel connecting rod away from the second main swing rod, and the rotation axis of the second end of the third connecting rod is different from the rotation axis of the first end of the fourth connecting rod.

2. The hinge mechanism according to claim 1, characterized in that: The main shaft comprises: a support and a first fixed shaft and a second fixed shaft fixedly connected to the support; The first fixed axis and the second fixed axis are respectively located on both sides of the central axis of the support, and the rotating end of the first main swing arm rotates around the first fixed axis, and the rotating end of the second main swing arm rotates around the second fixed axis.

3. The hinge mechanism according to claim 2, characterized in that: The pushing end includes a first pushing end and a second pushing end, the first connecting rod includes a first sub-connecting rod and a second sub-connecting rod, and the third connecting rod includes a third sub-connecting rod and a fourth sub-connecting rod; The first pushing end of the first main swing rod is rotatably connected to the first end of the first sub-connecting rod, and the second end of the first sub-connecting rod is rotatably connected to the first end of the second connecting rod; the second pushing end of the first main swing rod is rotatably connected to the first end of the second sub-connecting rod, and the second end of the second sub-connecting rod is rotatably connected to the first end of the second connecting rod; and the rotation axis of the second end of the first sub-connecting rod, the rotation axis of the second end of the second sub-connecting rod and the rotation axis of the first end of the second connecting rod are all different; The first pushing end of the second main rocker arm is rotationally connected to the first end of the third sub-link, and the second end of the third sub-link is rotationally connected to the first end of the fourth link; the second pushing end of the second main rocker arm is rotationally connected to the first end of the fourth sub-link, and the second end of the fourth sub-link is rotationally connected to the first end of the fourth link; and the rotation axis of the second end of the third sub-link, the rotation axis of the second end of the fourth sub-link and the rotation axis of the first end of the fourth link are all different.

4. The hinge mechanism according to claim 3, characterized in that: The driving end further comprises: a third driving end; The first linkage assembly further includes: a fifth link; the third pushing end of the first main swing link is rotatably connected to the first end of the fifth link, the second end of the fifth link is rotatably connected to the second end of the second link and the end of the first screen back link away from the first main swing link, and the rotation axis of the second end of the fifth link, the rotation axis of the second end of the second link and the rotation axis of the end of the first screen back link away from the first main swing link are all the same; The second linkage assembly also includes: a sixth link; the third pushing end of the second main swing arm is rotationally connected to the first end of the sixth link, the second end of the sixth link is rotationally connected to the second end of the fourth link and the end of the second screen back panel link away from the second main swing arm, and the rotation axis of the second end of the sixth link, the rotation axis of the second end of the fourth link and the rotation axis of the end of the second screen back panel link away from the second main swing arm are all the same.

5. The hinge mechanism according to claim 3 or 4, characterized in that: Also includes: A first collar, a second collar and a plurality of fixing members, wherein the first collar and the second collar each have at least three through holes; The first end of the second connecting rod is connected to the first through hole of the at least three through holes of the first collar through the fixing member, the second end of the first sub-connecting rod is connected to the second through hole of the at least three through holes of the first collar through the fixing member, and the second end of the second sub-connecting rod is connected to the third through hole of the at least three through holes of the first collar through the fixing member; The first end of the fourth connecting rod is connected to the first through hole of the at least three through holes of the second ring through the fixing member, the second end of the third sub-connecting rod is connected to the second through hole of the at least three through holes of the second ring through the fixing member, and the second end of the fourth sub-connecting rod is connected to the third through hole of the at least three through holes of the second ring through the fixing member.

6. The hinge mechanism according to claim 5, characterized in that: Also includes: The third and fourth rings; The third collar and the fourth collar each have at least two openings, and the at least three through holes of the first collar and the second collar further include a fourth through hole; The first opening of the at least two openings of the third ring is rotatably connected to the first fixed shaft, and the second opening of the at least two openings of the third ring is connected to the fourth through hole of the at least three through holes of the first ring through the fixing member; The first opening of the at least two openings of the fourth ring is rotationally connected to the second fixed shaft, and the second opening of the at least two openings of the fourth ring is connected to the fourth through hole of the at least three through holes of the second ring through the fixing member.

7. The hinge mechanism according to any one of claims 1 to 4, characterized in that: The second connecting rod and the fourth connecting rod are bent.

8. The hinge mechanism according to any one of claims 1 to 4, characterized in that: The rotating end and the pushing end of the first main swing arm are located at an end of the first main swing arm close to the main axis, and the sliding end of the first main swing arm is located at an end of the first main swing arm away from the main axis; The rotating end and the pushing end of the second main swing arm are located at an end of the first main swing arm close to the main axis, and the sliding end of the second main swing arm is located at an end of the first main swing arm away from the main axis.

9. The hinge mechanism according to any one of claims 1 to 4, characterized in that: A first guide rail is disposed on one of two opposite side surfaces of the first main swing rod and the first screen back plate connecting rod, and a first sliding member is disposed on the other side surface, and the first sliding member slides in the first guide rail; A second guide rail is provided on one of the two opposite side surfaces of the second main swing rod and the second screen back panel connecting rod, and a second sliding member is provided on the other side, and the second sliding member slides in the second guide rail.

10. The hinge mechanism according to any one of claims 1 to 4, characterized in that: The first main rocker arm and the second main rocker arm are respectively arranged alternately in a direction parallel to the main shaft axis.

11. A foldable electronic device, characterized in that: include: A first shell, a second shell, and a hinge mechanism as described in any one of claims 1 to 10; The first shell and the second shell are located on both sides of the main shaft, the first shell is fixedly connected to the first main swing rod, and the second shell is fixedly connected to the second main swing rod; Also includes: a flexible screen; The flexible screen body covers the hinge mechanism, the first shell and the second shell.

12. The foldable electronic device according to claim 11, characterized in that: One end of the flexible screen body is fixedly connected to the first screen back panel connecting rod in the hinge mechanism, which is connected to one end of the first main swing rod, and the other end of the flexible screen body is fixedly connected to the second screen back panel connecting rod in the hinge mechanism, which is connected to one end of the second main swing rod.

Images