Hinge assembly and electronic equipment

Abstract

The present application discloses a hinge assembly and an electronic device, wherein the hinge assembly includes: a first gear group and a second gear group, and the gears of the first gear group and the second gear group are configured accordingly. When the first gear is a driving wheel and the second gear is a driven wheel, and the first gear and the gear adjacent to it overlap in the rotation direction of the first gear, a first gap is left between the third gear and the gear adjacent to it in the rotation direction of the first gear. When the second gear is switched from the driven wheel to the driving wheel and the first gear is switched from the driving wheel to the driven wheel, a second gap is left between the second gear and the gear adjacent to it in the rotation direction of the second gear, and the fourth gear and the gear adjacent to it overlap in the rotation direction of the second gear, thereby avoiding the problem of asynchronous rotation of the first rotating shaft and the second rotating shaft.

Description

Technical Field

[0001] The present application belongs to the field of electronic technology, and specifically relates to a hinge assembly and an electronic device. Background Art

[0002] As various advanced technologies are applied to electronic devices, the pace of electronic device updates is accelerating, and users' expectations for electronic devices are also increasing. Flexible screens, for example, have led to the rapid development of foldable electronic devices, making it possible for electronic devices to combine large display areas with good portability. However, during use, foldable electronic devices are prone to problems such as abnormal torque, jamming, and mid-frame misalignment. Summary of the Invention

[0003] The present application aims to provide a hinge assembly and electronic device that can solve problems such as abnormal torque, jamming, and middle frame misalignment that are easily generated during the use of foldable electronic devices.

[0004] In order to solve the above technical problems, this application is implemented as follows:

[0005] The embodiment of the present application provides a hinge assembly, comprising: a first rotating shaft, a second rotating shaft, and a gear synchronization mechanism;

[0006] The first rotating shaft and the second rotating shaft are connected via a gear synchronization mechanism, and the gear synchronization mechanism includes a first gear set and a second gear set arranged coaxially;

[0007] The first gear set includes a first gear and a second gear, the second gear set includes a third gear and a fourth gear, the first gear and the third gear are coaxially arranged on the first rotating shaft, and the second gear and the fourth gear are coaxially arranged on the second rotating shaft;

[0008] When the first gear is a driving gear and the second gear is a driven gear, and the first gear and the gear adjacent thereto overlap in the rotation direction of the first gear, a first gap is left between the third gear and the gear adjacent thereto in the rotation direction of the first gear;

[0009] When the second gear is switched from the driven wheel to the driving wheel and the first gear is switched from the driving wheel to the driven wheel, a second gap is left between the second gear and the gear adjacent to it in the rotation direction of the second gear, and the fourth gear and the gear adjacent to it overlap in the rotation direction of the second gear.

[0010] In addition, an embodiment of the present application further provides an electronic device, including: the above-mentioned hinge assembly.

[0011] In an embodiment of the present application, compared with a single gear set, a first gear set and a second gear set are provided, and the gears of the first gear set and the second gear set are configured accordingly. When the first gear is a driving wheel and the second gear is a driven wheel, and the first gear and the gear adjacent to it overlap in the rotation direction of the first gear, a first gap is left between the third gear and the gear adjacent to it in the rotation direction of the first gear. When the second gear is switched from the driven wheel to the driving wheel and the first gear is switched from the driving wheel to the driven wheel, a second gap is left between the second gear and the gear adjacent to it in the rotation direction of the second gear, and the fourth gear and the gear adjacent to it overlap in the rotation direction of the second gear. That is to say, although the driving wheel will switch to the driven wheel, the gears included in one of the first gear set and the second gear set can always overlap in the rotation direction, thereby avoiding the problem of asynchronous rotation of the first rotating shaft and the second rotating shaft.

[0012] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0014] Figure 1 is a structural schematic diagram of a hinge assembly according to an embodiment of the present application;

[0015] Figure 2 is a structural schematic diagram of a gear synchronization mechanism according to an embodiment of the present application;

[0016] Figure 3 This is one of the structural schematic diagrams of the gear synchronization mechanism in the deployment process according to an embodiment of the present application;

[0017] Figure 4 This is a second structural schematic diagram of the gear synchronization mechanism in the deployment process according to an embodiment of the present application;

[0018] Figure 5 This is a third structural diagram of the gear synchronization mechanism in the deployment process according to an embodiment of the present application;

[0019] Figure 6 This is a fourth structural diagram of the gear synchronization mechanism in the deployment process according to an embodiment of the present application;

[0020] Figure 7 This is the fifth structural diagram of the gear synchronization mechanism in the deployment process according to an embodiment of the present application;

[0021] Figure 8This is the sixth structural diagram of the gear synchronization mechanism in the deployment process according to an embodiment of the present application;

[0022] Figure 9 This is the seventh structural diagram of the gear synchronization mechanism in the deployment process according to an embodiment of the present application;

[0023] Figure 10 This is an eighth structural diagram of the gear synchronization mechanism in the deployment process according to an embodiment of the present application;

[0024] Figure 11 This is one of the structural schematic diagrams of the gear synchronization mechanism in the closing process according to an embodiment of the present application;

[0025] Figure 12 This is a second structural diagram of the gear synchronization mechanism in the closing process according to an embodiment of the present application;

[0026] Figure 13 This is the third structural schematic diagram of the gear synchronization mechanism in the closing process according to the embodiment of the present application;

[0027] Figure 14 This is a fourth structural diagram of the gear synchronization mechanism in the closing process according to an embodiment of the present application;

[0028] Figure 15 This is the fifth structural diagram of the gear synchronization mechanism in the closing process according to the embodiment of the present application;

[0029] Figure 16 This is the sixth structural diagram of the gear synchronization mechanism in the closing process according to the embodiment of the present application;

[0030] Figure 17 This is the seventh structural diagram of the gear synchronization mechanism in the closing process according to the embodiment of the present application;

[0031] Figure 18 This is the eighth structural schematic diagram of the gear synchronization mechanism in the closing process according to the embodiment of the present application.

[0032] Reference numerals:

[0033] 1. First gear; 2. Second gear; 3. Third gear; 4. Fourth gear; 5. Fifth gear; 6. Sixth gear; 7. Seventh gear; 8. Eighth gear; 9. First rotating shaft; 10. Second rotating shaft; 11. First mounting shaft; 12. Second mounting shaft;

[0034] 100, first gap; 200, second gap; 300, third gap; 400, fourth gap. DETAILED DESCRIPTION

[0035] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0036] In the description of this application, it should be understood that the terms "first" and "second" may explicitly or implicitly include one or more of the features.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0038] To ensure smooth gear movement, a gap is designed into the non-meshing sides of the gears (this gap cannot be eliminated). When the user grasps the left and right sides of a foldable electronic device to unfold or close them, the left and right parts rotate at different speeds, driving the left and right gears at different speeds. When the left gear rotates faster than the right gear, the left gear becomes the driving gear and the right gear becomes the driven gear. When the right gear rotates faster than the left gear, the right gear becomes the driving gear and the left gear becomes the driven gear. Because the user unfolds or closes the left and right sides of a foldable electronic device at random speeds, the left gear's speed may change from being faster than the right gear to being faster than the left gear (or vice versa). During this transition, the driving gear switches from the left gear to the right gear (or vice versa). During this switching process, the gears must rotate a certain angle to eliminate the gear backlash before transmission can begin. During this backlash elimination process, the left and right gears lose connection and become out of sync, causing the left and right hinges to rotate out of sync, leading to torque anomalies, lags, and misalignment of the middle frame.

[0039] In order to solve the above problems, Figures 1 to 18 As shown, the hinge assembly of the embodiment of the present application includes: a first rotating shaft 9, a second rotating shaft 10 and a gear synchronization mechanism.

[0040] The first rotating shaft 9 and the second rotating shaft 10 are connected via a gear synchronization mechanism, which includes a first gear set and a second gear set that are coaxially arranged.

[0041] Specifically, part of the first gear set is provided on the first rotating shaft 9 , and another part of the first gear set is provided on the second rotating shaft 10 . Similarly, part of the second gear set is provided on the first rotating shaft 9 , and another part of the second gear set is provided on the second rotating shaft 10 .

[0042] For example, the first gear set includes a first gear 1 and a second gear 2, the second gear set includes a third gear 3 and a fourth gear 4, the first gear 1 and the third gear 3 are coaxially arranged on the first rotating shaft 9, and the second gear 2 and the fourth gear 4 are coaxially arranged on the second rotating shaft 10.

[0043] When the first gear 1 is the driving wheel, the second gear 2 is the driven wheel, and the first gear 1 and the gear adjacent to it overlap in the rotation direction of the first gear 1, a first gap 100 is left between the third gear 3 and the gear adjacent to it in the rotation direction of the first gear 1.

[0044] That is, when the first gear 1 and the second gear 2 overlap in the rotation direction of the first gear 1 , a first gap 100 is left between the third gear 3 and the fourth gear 4 in the rotation direction of the first gear 1 .

[0045] When the second gear 2 is switched from the driven wheel to the driving wheel and the first gear 1 is switched from the driving wheel to the driven wheel, a second gap 200 is left between the second gear 2 and the gear adjacent to it in the rotation direction of the second gear 2, and the fourth gear 4 and the gear adjacent to it overlap in the rotation direction of the second gear 2.

[0046] In other words, a second gap 200 is left between the second gear 2 and the first gear 1 in the rotation direction of the second gear 2 , and the fourth gear 4 and the third gear 3 overlap in the rotation direction of the second gear 2 .

[0047] In the embodiment of the present application, compared with a single gear set, a first gear set and a second gear set are provided, and the gears of the first gear set and the second gear set are configured accordingly. When the first gear 1 is a driving wheel and the second gear 2 is a driven wheel, and the first gear 1 and the gear adjacent to it overlap in the rotation direction of the first gear 1, a first gap 100 is left between the third gear 3 and the gear adjacent to it in the rotation direction of the first gear 1. When the second gear 2 is switched from the driven wheel to the driving wheel and the first gear 1 is switched from the driving wheel to the driven wheel, a second gap 200 is left between the second gear 2 and the gear adjacent to it in the rotation direction of the second gear 2, and the fourth gear 4 and the gear adjacent to it overlap in the rotation direction of the second gear 2. That is to say, although the driving wheel will switch to the driven wheel, the gears included in one of the first gear set and the second gear set can always overlap in the rotation direction, thereby avoiding the problem of asynchronous rotation of the first rotating shaft 9 and the second rotating shaft 10.

[0048] In an optional embodiment, in order to improve the smoothness of transmission, the gear synchronization mechanism further includes a first transmission gear set and a second transmission gear set.

[0049] The first gear 1 and the second gear 2 are connected by transmission through a first transmission gear set, and the third gear 3 and the fourth gear 4 are connected by transmission through a second transmission gear set.

[0050] When the first gear 1 is the driving wheel, the second gear 2 is the driven wheel, and the first gear 1 and the first transmission gear set overlap in the rotation direction of the first gear, a first gap 100 is left between the third gear 3 and the second transmission gear set in the rotation direction of the first gear 1.

[0051] When the second gear 2 is switched from the driven wheel to the driving wheel and the first gear 1 is switched from the driving wheel to the driven wheel, a second gap is left between the second gear 2 and the first transmission gear set in the rotation direction of the second gear 2, and the fourth gear 4 overlaps with the second transmission gear set in the rotation direction of the second gear 2.

[0052] In the embodiment of the present application, the first transmission gear set may include a plurality of gears, the number of gears being an even number, for example, the first transmission gear set includes two gears or four gears. The second transmission gear set may include a plurality of gears, the number of gears being an even number, for example, the second transmission gear set includes two gears or four gears.

[0053] The number of gears included in the first transmission gear set is the same as the number of gears included in the second transmission gear set.

[0054] In an optional embodiment, if Figure 1 and Figure 2As shown, the first gear set further includes a fifth gear 5 and a sixth gear 6 , the first gear 1 is meshed with the fifth gear 5 , the fifth gear 5 is meshed with the sixth gear 6 , and the sixth gear 6 is meshed with the second gear 2 .

[0055] The second gear set further includes a seventh gear 7 and an eighth gear 8 , the third gear 3 and the seventh gear 7 are meshed and connected, the seventh gear 7 and the eighth gear 8 are meshed and connected, and the eighth gear 8 and the fourth gear 4 are meshed and connected.

[0056] It should be noted that the first gear 1 and the fifth gear 5 are meshed and connected, the fifth gear 5 and the sixth gear 6 are meshed and connected, and the sixth gear 6 and the second gear 2 are meshed and connected, which can improve the transmission smoothness of the first gear set. Similarly, the third gear 3 and the seventh gear 7 are meshed and connected, the seventh gear 7 and the eighth gear 8 are meshed and connected, and the eighth gear 8 and the fourth gear 4 are meshed and connected, which can improve the transmission smoothness of the second gear set.

[0057] In an optional embodiment, when the first gear 1 is a driving wheel, the second gear 2 is a driven wheel, and the first gear 1 and the fifth gear 5 overlap in the rotation direction of the first gear 1, a first gap 100 is left between the third gear 3 and the seventh gear 7 in the rotation direction of the first gear 1.

[0058] When the second gear 2 switches from the driven wheel to the driving wheel and the first gear 1 switches from the driving wheel to the driven wheel, a second gap 200 is left between the second gear 2 and the sixth gear 6 in the rotation direction of the second gear 2, and the fourth gear 4 and the eighth gear 8 overlap in the rotation direction of the second gear 2.

[0059] Specifically, when the first gear 1 is the driving wheel, the second gear 2 is the driven wheel, and the first gear 1 and the fifth gear 5 overlap in the rotation direction of the first gear 1, the fifth gear 5, the sixth gear 6 and the second gear 2 overlap with each other, a first gap 100 is left between the third gear 3 and the seventh gear 7 in the rotation direction of the first gear 1, and the seventh gear 7, the eighth gear 8 and the fourth gear 4 overlap with each other.

[0060] When the second gear 2 is switched from the driven wheel to the driving wheel and the first gear 1 is switched from the driving wheel to the driven wheel, a second gap 200 is left between the second gear 2 and the sixth gear 6 in the rotation direction of the second gear 2, the first gear 1, the fifth gear 5 and the sixth gear 6 overlap with each other, the fourth gear 4 and the eighth gear 8 overlap with each other in the rotation direction of the second gear 2, and the third gear 3, the seventh gear 7 and the eighth gear 8 overlap with each other.

[0061] In an optional embodiment, if Figures 3 to 10As shown, when the hinge assembly is unfolded, and when the first gear 1 is the driving wheel and the second gear 2 is the driven wheel, the first gear 1 overlaps with the fifth gear 5 on the side facing the rotation direction of the first gear 1, so that the first gear 1 and the fifth gear 5 overlap in the rotation direction of the first gear 1, and the fifth gear 5, the sixth gear 6 and the second gear 2 overlap with each other; a first gap 100 is left between the third gear 3 and the seventh gear 7 in the rotation direction of the first gear 1, and the seventh gear 7, the eighth gear 8 and the fourth gear 4 overlap with each other.

[0062] When the second gear 2 is switched from the driven wheel to the driving wheel and the first gear 1 is switched from the driving wheel to the driven wheel, the first gear 1, the fifth gear 5 and the sixth gear 6 overlap with each other, and a second gap 200 is left between the second gear 2 and the sixth gear 6 in the rotation direction of the second gear 2; the fourth gear 4 overlaps with the eighth gear 8 on the side facing the rotation direction of the second gear 2, so that the fourth gear 4 and the eighth gear 8 overlap in the rotation direction of the second gear 2, and the third gear 3, the seventh gear 7 and the eighth gear 8 overlap with each other.

[0063] When the second gear 2 is the driving wheel and the first gear 1 is the driven wheel, the second gear 2 overlaps with the sixth gear 6 on the side facing the rotation direction of the second gear 2, so that the second gear 2 and the sixth gear 6 overlap in the rotation direction of the second gear 2, and the first gear 1, the fifth gear 5 and the sixth gear 6 overlap with each other; the fourth gear 4 and the eighth gear 8 leave a third gap 300 in the rotation direction of the second gear 2, and the third gear 3, the seventh gear 7 and the eighth gear 8 overlap with each other.

[0064] When the second gear 2 is switched from the driving wheel to the driven wheel and the first gear 1 is switched from the driven wheel to the driving wheel, a fourth gap 400 is left between the first gear 1 and the fifth gear 5 in the rotation direction of the first gear 1, and the fifth gear 5, the sixth gear 6 and the second gear 2 overlap with each other; the third gear 3 overlaps with the seventh gear 7 on the side facing the rotation direction of the first gear 1, so that the third gear 3 and the seventh gear 7 overlap in the rotation direction of the first gear 1, and the seventh gear 7, the eighth gear 8 and the fourth gear 4 overlap with each other.

[0065] In an optional embodiment, if Figures 11 to 18 As shown, when the hinge assembly is in the process of closing, and when the first gear 1 is the driving wheel and the second gear 2 is the driven wheel, the first gear 1 overlaps with the fifth gear 5 on the side facing the rotation direction of the first gear 1, so that the first gear 1 and the fifth gear 5 overlap in the rotation direction of the first gear 1, and the fifth gear 5, the sixth gear 6 and the second gear 2 overlap with each other; a first gap 100 is left between the third gear 3 and the seventh gear 7 in the rotation direction of the first gear 1, and the seventh gear 7, the eighth gear 8 and the fourth gear 4 overlap with each other.

[0066] When the second gear 2 is switched from the driven wheel to the driving wheel and the first gear 1 is switched from the driving wheel to the driven wheel, the first gear 1, the fifth gear 5 and the sixth gear 6 overlap with each other, and a second gap 200 is left between the second gear 2 and the sixth gear 6 in the rotation direction of the second gear 2; the fourth gear 4 overlaps with the eighth gear 8 on the side facing the rotation direction of the second gear 2, so that the fourth gear 4 and the eighth gear 8 overlap in the rotation direction of the second gear 2, and the third gear 3, the seventh gear 7 and the eighth gear 8 overlap with each other.

[0067] When the second gear 2 is the driving wheel and the first gear 1 is the driven wheel, the second gear 2 overlaps with the sixth gear 6 on the side facing the rotation direction of the second gear 2, so that the second gear 2 and the sixth gear 6 overlap in the rotation direction of the second gear 2, and the first gear 1, the fifth gear 5 and the sixth gear 6 overlap with each other; the fourth gear 4 and the eighth gear 8 leave a third gap 300 in the rotation direction of the second gear 2, and the third gear 3, the seventh gear 7 and the eighth gear 8 overlap with each other.

[0068] When the second gear 2 is switched from the driving wheel to the driven wheel and the first gear 1 is switched from the driven wheel to the driving wheel, a fourth gap 400 is left between the first gear 1 and the fifth gear 5 in the rotation direction of the first gear 1, and the fifth gear 5, the sixth gear 6 and the second gear 2 overlap with each other; the third gear 3 overlaps with the seventh gear 7 on the side facing the rotation direction of the first gear 1, so that the third gear 3 and the seventh gear 7 overlap in the rotation direction of the first gear 1, and the seventh gear 7, the eighth gear 8 and the fourth gear 4 overlap with each other.

[0069] In an optional embodiment, if Figure 1 and Figure 2 As shown, the first gear set is arranged close to the second gear set, and a fifth gap (not shown in the figure) is left between the first gear set and the second gear set.

[0070] It should be noted that the first gear 1 is arranged close to the third gear 3 , the fifth gear 5 is arranged close to the seventh gear 7 , the sixth gear 6 is arranged close to the eighth gear 8 , and the second gear 2 is arranged close to the fourth gear 4 .

[0071] Among them, there is a fifth gap between the first gear 1 and the third gear 3, which can avoid friction between the first gear 1 and the third gear 3 when rotating; there is a fifth gap between the fifth gear 5 and the seventh gear 7, which can avoid friction between the fifth gear 5 and the seventh gear 7 when rotating; there is a fifth gap between the sixth gear 6 and the eighth gear 8, which can avoid friction between the sixth gear 6 and the eighth gear 8 when rotating; there is a fifth gap between the second gear 2 and the fourth gear 4, which can avoid friction between the second gear 2 and the fourth gear 4 when rotating.

[0072] In an optional embodiment, the hinge assembly further includes a first mounting shaft 11 and a second mounting shaft 12 , the fifth gear 5 and the seventh gear 7 are sleeved on the first mounting shaft 11 , and the sixth gear 6 and the eighth gear 8 are sleeved on the second mounting shaft 12 .

[0073] It should be noted that the fifth gear 5 and the seventh gear 7 are fixedly mounted on the first mounting shaft 11 , and the sixth gear 6 and the eighth gear 8 are fixedly mounted on the second mounting shaft 12 .

[0074] For example, the fifth gear 5 and the seventh gear 7 are fixedly mounted on the first mounting shaft 11 by welding or bonding, and the sixth gear 6 and the eighth gear 8 are fixedly mounted on the second mounting shaft 12 by welding or bonding.

[0075] In an optional embodiment, the first gear 1 and the third gear 3 are both fixedly connected to the first rotating shaft 9 , and the second gear 2 and the fourth gear 4 are both fixedly connected to the second rotating shaft 10 .

[0076] For example, the first gear 1 and the third gear 3 are fixedly mounted on the first rotating shaft 9 by welding or bonding, and the second gear 2 and the fourth gear 4 are fixedly mounted on the second rotating shaft 10 by welding or bonding.

[0077] In addition, if Figure 1 As shown, an embodiment of the present application further provides an electronic device, including: the above-mentioned hinge assembly.

[0078] Specifically, the electronic device further includes a base, a first shell seat, a second shell seat, a first screen supporting plate, a second screen supporting plate and a third screen supporting plate.

[0079] Among them, the first shell seat is rotatably provided on the first screen support plate, the first shell seat and the first screen support plate are provided on the first side of the base, the second shell seat is rotatably provided on the second screen support plate, the second shell seat and the second screen support plate are provided on the second side of the base, the first side and the second side are provided back to back, and the third screen support plate is movably connected to the base in its own supporting direction.

[0080] In addition, the electronic device also includes a swing arm assembly, which includes a first swing arm, a second swing arm, a third swing arm and a fourth swing arm. The first swing arm and the third swing arm are both arranged on the same side of the first shell seat, and the second swing arm and the fourth swing arm are arranged on the same side of the second shell seat; the first end of the first swing arm is rotatably connected to the base, the second end of the first swing arm is rotatably connected to the first shell seat, the first end of the third swing arm is rotatably connected to the base, the second end of the third swing arm is slidably matched with the first shell seat, the second end of the third swing arm and the first screen support plate can slide relative to each other and rotate together, and the rotation axis of the first end of the first swing arm is spaced apart from the rotation axis of the first end of the third swing arm; the first end of the second swing arm is rotatably connected to the base, the second end of the second swing arm is rotatably connected to the second shell seat, the first end of the fourth swing arm is rotatably connected to the base, the second end of the fourth swing arm is slidably matched with the second shell seat, the second end of the fourth swing arm and the second screen support plate can slide relative to each other and rotate together, and the rotation axis of the first end of the second swing arm and the rotation axis of the first end of the fourth swing arm are spaced apart.

[0081] The first rotating shaft 9 and the second rotating shaft 10 are both rotatably mounted on the base, the third swing arm cooperates with the first rotating shaft 9 in the upper limit position of the rotation direction of the first swing arm, and the fourth swing arm cooperates with the second rotating shaft 10 in the upper limit position of the rotation direction. The first rotating shaft 9 and the second rotating shaft 10 are connected by a gear synchronization mechanism, and the first housing seat and the second housing seat rotate synchronously through the gear synchronization mechanism.

[0082] Since the electronic device includes the hinge assembly as described above, and the specific structure of the hinge assembly refers to the above embodiment, the electronic device shown in this embodiment includes all the technical solutions of the above embodiment, and therefore has at least all the beneficial effects achieved by all the above technical solutions, which will not be repeated here.

[0083] The electronic device disclosed in the embodiments of the present application may be a mobile phone, a computer, an e-book reader, a wearable device, etc. The embodiments of the present application do not limit the specific type of electronic device.

[0084] Throughout this specification, references to terms such as "optional implementations" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0085] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A hinge assembly, characterized in that: include: a first rotating shaft, a second rotating shaft, and a gear synchronization mechanism; The first rotating shaft and the second rotating shaft are connected via a gear synchronization mechanism, and the gear synchronization mechanism includes a first gear set and a second gear set arranged coaxially; The first gear set includes a first gear and a second gear, the second gear set includes a third gear and a fourth gear, the first gear and the third gear are coaxially arranged on the first rotating shaft, and the second gear and the fourth gear are coaxially arranged on the second rotating shaft; The gear synchronization mechanism further includes a first transmission gear set and a second transmission gear set; The first gear and the second gear are connected by transmission through the first transmission gear set, and the third gear and the fourth gear are connected by transmission through the second transmission gear set; When the first gear is a driving gear and the second gear is a driven gear, and the first gear and the first transmission gear set overlap in the rotation direction of the first gear, a first gap is left between the third gear and the second transmission gear set in the rotation direction of the first gear; When the second gear is switched from the driven wheel to the driving wheel and the first gear is switched from the driving wheel to the driven wheel, a second gap is left between the second gear and the first transmission gear set in the rotation direction of the second gear, and the fourth gear overlaps with the second transmission gear set in the rotation direction of the second gear; Wherein, the first transmission gear set and the second transmission gear set include a plurality of gears, and the number of the gears is an even number.

2. The hinge assembly according to claim 1, wherein: The first gear set further includes a fifth gear and a sixth gear, the first gear and the fifth gear are meshed and connected, the fifth gear and the sixth gear are meshed and connected, and the sixth gear and the second gear are meshed and connected; The second gear set further includes a seventh gear and an eighth gear. The third gear is meshed with the seventh gear, the seventh gear is meshed with the eighth gear, and the eighth gear is meshed with the fourth gear.

3. The hinge assembly according to claim 2, wherein: When the first gear is a driving gear, the second gear is a driven gear, and the first gear and the fifth gear overlap in the rotation direction of the first gear, a first gap is left between the third gear and the seventh gear in the rotation direction of the first gear; When the second gear is switched from the driven wheel to the driving wheel and the first gear is switched from the driving wheel to the driven wheel, a second gap is left between the second gear and the sixth gear in the rotation direction of the second gear, and the fourth gear and the eighth gear overlap in the rotation direction of the second gear.

4. The hinge assembly according to claim 2, wherein: When the hinge assembly is unfolded, and the first gear serves as the driving gear and the second gear serves as the driven gear, the first gear overlaps the fifth gear on a side facing the rotation direction of the first gear, so that the first gear and the fifth gear overlap in the rotation direction of the first gear, and the fifth gear, the sixth gear, and the second gear overlap with each other; A first gap is left between the third gear and the seventh gear in the rotation direction of the first gear, and the seventh gear, the eighth gear and the fourth gear are overlapped with each other; When the second gear switches from the driven gear to the driving gear and the first gear switches from the driving gear to the driven gear, the first gear, the fifth gear, and the sixth gear overlap each other, and a second gap is left between the second gear and the sixth gear in the rotation direction of the second gear; the fourth gear overlaps the eighth gear on the side facing the rotation direction of the second gear, so that the fourth gear and the eighth gear overlap in the rotation direction of the second gear, and the third gear, the seventh gear, and the eighth gear overlap each other; When the second gear is the driving gear and the first gear is the driven gear, the second gear is overlapped with the sixth gear on one side facing the rotation direction of the second gear, so that the second gear and the sixth gear are overlapped in the rotation direction of the second gear, and the first gear, the fifth gear, and the sixth gear are overlapped with each other; a third gap is left between the fourth gear and the eighth gear in the rotation direction of the second gear, and the third gear, the seventh gear, and the eighth gear are overlapped with each other; When the second gear is switched from the driving wheel to the driven wheel and the first gear is switched from the driven wheel to the driving wheel, a fourth gap is left between the first gear and the fifth gear in the rotation direction of the first gear, and the fifth gear, the sixth gear and the second gear overlap each other; The third gear overlaps with the seventh gear on one side facing the rotation direction of the first gear, so that the third gear and the seventh gear overlap in the rotation direction of the first gear, and the seventh gear, the eighth gear and the fourth gear overlap with each other.

5. The hinge assembly according to claim 2, wherein: When the hinge assembly is closed, and the first gear serves as the driving gear and the second gear serves as the driven gear, the first gear overlaps the fifth gear on a side facing the rotation direction of the first gear, so that the first gear and the fifth gear overlap in the rotation direction of the first gear, and the fifth gear, the sixth gear, and the second gear overlap with each other; A first gap is left between the third gear and the seventh gear in the rotation direction of the first gear, and the seventh gear, the eighth gear and the fourth gear are overlapped with each other; When the second gear switches from the driven gear to the driving gear and the first gear switches from the driving gear to the driven gear, the first gear, the fifth gear, and the sixth gear overlap each other, and a second gap is left between the second gear and the sixth gear in the rotation direction of the second gear; the fourth gear overlaps the eighth gear on the side facing the rotation direction of the second gear, so that the fourth gear and the eighth gear overlap in the rotation direction of the second gear, and the third gear, the seventh gear, and the eighth gear overlap each other; When the second gear is the driving gear and the first gear is the driven gear, the second gear is overlapped with the sixth gear on one side facing the rotation direction of the second gear, so that the second gear and the sixth gear are overlapped in the rotation direction of the second gear, and the first gear, the fifth gear, and the sixth gear are overlapped with each other; a third gap is left between the fourth gear and the eighth gear in the rotation direction of the second gear, and the third gear, the seventh gear, and the eighth gear are overlapped with each other; When the second gear is switched from the driving wheel to the driven wheel and the first gear is switched from the driven wheel to the driving wheel, a fourth gap is left between the first gear and the fifth gear in the rotation direction of the first gear, and the fifth gear, the sixth gear and the second gear overlap each other; The third gear overlaps with the seventh gear on one side facing the rotation direction of the first gear, so that the third gear and the seventh gear overlap in the rotation direction of the first gear, and the seventh gear, the eighth gear and the fourth gear overlap with each other.

6. The hinge assembly according to claim 1, wherein: The first gear set is disposed close to the second gear set, and a fifth gap is left between the first gear set and the second gear set.

7. The hinge assembly according to claim 2, wherein: The hinge assembly further includes a first mounting shaft and a second mounting shaft. The fifth gear and the seventh gear are sleeved on the first mounting shaft, and the sixth gear and the eighth gear are sleeved on the second mounting shaft.

8. The hinge assembly according to claim 1, wherein: The first gear and the third gear are both fixedly connected to the first rotating shaft, and the second gear and the fourth gear are both fixedly connected to the second rotating shaft.

9. An electronic device, characterized in that: include: The hinge assembly according to any one of claims 1 to 8.

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