Electronic device

Abstract

The invention provides electronic equipment. The electronic equipment comprises a first body; the second body is rotationally connected with the first body through a rotating mechanism; the display screen comprises a first part connected with the first body, a second part connected with the second body and a deformable part located between the first part and the second part; when the electronic equipment is in the first equipment posture, the deformable part meets the flattening condition; when the electronic equipment is in the second equipment posture, the deformable part meets the deformation condition; the relative rotation of the first body and the second body is used for switching between the first equipment posture and the second equipment posture; a first plane where a first cam and a second cam which are used for responding to the rotation of the rotating mechanism are located relative to the rotating mechanism and a second plane where a first gear and a second gear which are used for responding to the rotation of the rotating mechanism are located relative to the rotating mechanism are not coplanar and do not intersect with each other. And the second plane is lower than the first plane.

Description

Technical Field

[0001] This disclosure relates to the field of electronic equipment technology, and more particularly to an electronic device. Background Technology

[0002] Foldable screen phones, foldable screen computers, and other electronic devices with folding functions have a wide range of applications. These electronic devices can switch between unfolded and folded states.

[0003] Electronic devices with folding function include a rotating mechanism, which includes at least two cams and at least two gears. In related technologies, the rotation axes of the two cams are coplanar with the rotation axes of the two gears. The rotating mechanism occupies a large space in the lateral direction, and the torque provided by the cams is relatively small. In the axial direction, multiple torque modules need to be arranged sequentially to meet the torque requirements for opening and closing the electronic device. This results in a large number of parts in the rotating mechanism, high cost, and inconvenience for assembly and maintenance. Summary of the Invention

[0004] In view of the above problems, this disclosure provides an electronic device.

[0005] This disclosure provides an electronic device, including:

[0006] first ontology;

[0007] The second body is rotatably connected to the first body via a rotating mechanism;

[0008] The display screen includes a first part connected to the first body, a second part connected to the second body, and a deformable part located between the first part and the second part; the electronic device is in a first device posture, and the deformable part satisfies a flattening condition; the electronic device is in a second device posture, and the deformable part satisfies a deformation condition;

[0009] The relative rotation between the first body and the second body is used for switching between the first device posture and the second device posture;

[0010] The first and second cams of the rotating mechanism, which are used to respond to the rotation, are not coplanar with respect to the first plane of the rotating mechanism and the first and second gears of the rotating mechanism, which are used to respond to the rotation, are not intersecting with respect to the second plane of the rotating mechanism. The second plane is lower than the first plane.

[0011] According to an embodiment of this disclosure, the first gear is identical to the second gear and the radius of the tip circle is a first radius; the first gear meshes with the second gear, and the first gear and the second gear rotate synchronously to synchronize the rotation of the first body relative to the second body;

[0012] The first cam with a first tooth and the second cam with a second tooth are identical and the radius of the tooth tip circle is the second radius. The first tooth of the first cam meshes with the first gear, and the second tooth of the second cam meshes with the second gear. The first cam is used to drive the first gear to rotate, and the second cam is used to drive the second gear to rotate. The first cam and the second cam are also used to provide the force for the rotation process and the force for maintaining the posture of the equipment.

[0013] The first radius is smaller than the second radius.

[0014] According to an embodiment of the present disclosure, the first cam includes a first sub-cam and a second sub-cam arranged opposite to each other along the axis of the first cam. The first end face of the first sub-cam is opposite to the first end face of the second sub-cam, and the second end face of the first sub-cam is opposite to the second end face of the second sub-cam. The second end face of the first sub-cam and the second end face of the second sub-cam are used to increase the frictional force that the first cam can provide.

[0015] The second cam includes a third sub-cam and a fourth sub-cam arranged opposite each other along the axis of the second cam. The first end face of the third sub-cam is opposite to the first end face of the fourth sub-cam, and the second end face of the third sub-cam is opposite to the second end face of the fourth sub-cam. The second end faces of the third sub-cam and the fourth sub-cam are used to increase the frictional force that the second cam can provide.

[0016] According to an embodiment of this disclosure, the rotating mechanism includes:

[0017] A first rotating arm, the first rotating arm including a first cam and a first connecting arm connected to the first cam, the first connecting arm being connected to the first body;

[0018] The second rotating arm includes the second cam and a second connecting arm connected to the second cam, and the second connecting arm is connected to the second body;

[0019] The friction element is located between the second end face of the first sub-cam and the second end face of the second sub-cam, and between the second end face of the third sub-cam and the second end face of the fourth sub-cam.

[0020] According to an embodiment of this disclosure, the rotating mechanism includes a first rotating shaft, a first cam sleeved on the first rotating shaft, and a first concave wheel, a second concave wheel, and a first elastic element sleeved on the first rotating shaft;

[0021] The first friction part of the friction member is sandwiched between the first sub-cam and the second sub-cam. The first sub-cam is in frictional contact with the first concave wheel and the first friction part is in frictional contact. The second sub-cam is in frictional contact with the second concave wheel and the second sub-cam is in frictional contact with the first friction part. The first elastic member abuts against the first concave wheel.

[0022] According to an embodiment of this disclosure, the rotating mechanism includes a second rotating shaft, a second cam sleeved on the second rotating shaft, and a third concave wheel, a fourth concave wheel, and a second elastic element sleeved on the second rotating shaft;

[0023] The second friction part of the friction member is sandwiched between the third sub-cam and the fourth sub-cam. The third sub-cam is in frictional contact with the third concave wheel and also in frictional contact with the second friction part. The fourth sub-cam is in frictional contact with the fourth concave wheel and also in frictional contact with the second friction part. The second elastic member abuts against the third concave wheel.

[0024] According to embodiments of this disclosure, the first connecting arm is connected to the first body via a first support assembly, and the second connecting arm is connected to the second body via a second support assembly;

[0025] In the first device posture, the support surface of the first support component and the support surface of the second support component meet the flattening condition, and the first support component and the second support component are used to support the deformable part.

[0026] According to an embodiment of this disclosure, the rotating mechanism drives the first gear to rotate via the first tooth of the first cam and drives the second gear to rotate via the second tooth of the second cam; the first gear and the second gear are meshed together.

[0027] According to an embodiment of this disclosure, the first cam and the second cam are located within the housing of the rotating mechanism, and the first gear and the second gear are located within the housing of the rotating mechanism.

[0028] According to an embodiment of this disclosure, the rotating mechanism includes:

[0029] case;

[0030] A base is located inside the housing. Three rotating units are spaced apart on the base. The area between two adjacent rotating units serves as the area where the first body and the second body pass through the wire.

[0031] The rotating unit includes the first cam, the second cam, the first gear, and the second gear. Attached Figure Description

[0032] To gain a more complete understanding of this disclosure and its advantages, reference will now be made to the following description taken in conjunction with the accompanying drawings, wherein:

[0033] Figure 1 A schematic diagram illustrating an electronic device in a first device posture according to an embodiment of the present disclosure is shown.

[0034] Figure 2 A schematic diagram illustrating an electronic device in a second device posture according to an embodiment of the present disclosure is shown.

[0035] Figure 3 A partial schematic diagram of the rotating mechanism in the deployed state according to an embodiment of the present disclosure is shown;

[0036] Figure 4 A partial schematic diagram of the rotating mechanism according to an embodiment of the present disclosure in a folded state is shown;

[0037] Figure 5 One of the structural schematic diagrams of the rotating mechanism according to an embodiment of the present disclosure is shown (shown from the rear of the rotating mechanism).

[0038] Figure 6 Schematic illustration Figure 5 One of the partial structural diagrams of the rotating mechanism;

[0039] Figure 7 Schematic illustration Figure 5 Partial structural schematic diagram of the central rotating mechanism (Part 2);

[0040] Figure 8 Schematic illustration Figure 7 A partial explosion diagram of the central rotating mechanism;

[0041] Figure 9 Schematic illustration Figure 8 A schematic diagram of a local structure in the image;

[0042] Figure 10 The diagram illustrates a second structural schematic of the rotating mechanism according to an embodiment of the present disclosure (shown from the front of the rotating mechanism).

[0043] Figure 11 Schematic illustration Figure 10 A partial structural diagram of the rotating mechanism;

[0044] Figure 12 Schematic illustration Figure 11 A partial explosion diagram of the central rotating mechanism;

[0045] Figure 13 Schematic illustration Figure 12A partial structural diagram of the rotating mechanism;

[0046] Figure 14 A schematic diagram illustrating the rotating mechanism in a folded state according to an embodiment of the present disclosure is shown.

[0047] Figure 15 One of the partial schematic diagrams of the rotating mechanism according to an embodiment of the present disclosure in a folded state is shown schematically;

[0048] Figure 16 A second partial schematic diagram illustrating the rotating mechanism in a folded state according to an embodiment of the present disclosure is shown.

[0049] Figure label:

[0050] 10. First body; 20. Second body; 30. Rotating mechanism; 31. First rotating assembly; 311. First rotating shaft; 312. First cam; 3121. First sub-cam; 3122. Second sub-cam; 3123. First sub-connecting arm; 31231. First protrusion; 3124. Second sub-connecting arm; 31241. Second protrusion; 313. First gear; 314. First concave wheel; 315. Second concave wheel; 316. First elastic element; 32. Second rotating assembly; 321. Second rotating shaft; 322. Second cam; 3221. Third sub-cam; 3222. Fourth sub-cam; 3223. Third sub-connecting arm; 32231. Third protrusion; 3224. Fourth sub-connecting arm; 32241. Fourth protrusion; 323. Second gear; 324. Third concave wheel; 325. 326. Four concave wheels; 33. Second elastic element; 34. Base; 35. Housing; 36. Mounting seat; 37. Friction element; 38. First friction part; 39. Second friction part; 301. First support plate; 31. First arc groove; 31. Second arc groove; 302. First connecting plate; 31. First sliding groove; 32. Second sliding groove; 33. Second support assembly; 34. Second support plate; 35. Third arc groove; 36. Fourth arc groove; 37. Second arc groove; 38. Second connecting plate; 39. Third sliding groove; 30. Second sliding groove; 31. Track assembly; 32. First track element; 33. Second track element; 44. First plane; 35. Second plane; 46. Display screen; 47. First part; 48. Second part; 49. Deformable part. Detailed Implementation

[0051] Embodiments of the present disclosure will now be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the disclosure. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concepts of the present disclosure.

[0052] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0053] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0054] The following combination Figures 1 to 16 This disclosure describes an electronic device. Figure 2 In order to clearly show the rotating mechanism 30, the first body 10 and the second body 20 are omitted. Figures 5 to 9 The casing 34 is omitted. Figure 10 The casing 34 is omitted in the text. Figures 11 to 13 The base 33 and the shell 34 are omitted in the text. Figures 14 to 16 The shell 34 is omitted in the text.

[0055] In embodiments of this disclosure, such as Figure 1 and Figure 2 As shown, the electronic device includes a first body 10, a second body 20, a rotating mechanism 30, and a display screen 40. The first body 10 is rotatably connected to the second body 20 via the rotating mechanism 30. The display screen 40 includes a first portion 41 connected to the first body 10, a second portion 42 connected to the second body 20, and a deformable portion 43 located between the first portion 41 and the second portion 42. In a first device posture, the deformable portion 43 meets the flattening condition; in a second device posture, the deformable portion 43 meets the deformation condition. The relative rotation of the first body 10 and the second body 20 is used for switching between the first and second device postures. Figure 3 and Figure 4 As shown, the first cam 312 and the second cam 322 of the rotating mechanism 30, which are used to respond to rotation, are not coplanar with respect to the first plane 301 on which the rotating mechanism 30 is located, and the first gear 313 and the second gear 323 of the rotating mechanism 30, which are used to respond to rotation, are not intersecting with respect to the second plane 302 on which the rotating mechanism 30 is located. The second plane 302 is lower than the first plane 301.

[0056] Electronic devices, including mobile phones and laptops, utilize a rotating mechanism 30 to position the first body 10 and the second body 20 at different angles. Depending on the angle between the first body 10 and the second body 20, the electronic device exhibits a first device posture and a second device posture. In the first device posture, i.e., the electronic device is in an unfolded posture, the angle between the first body 10 and the second body 20 is the first angle, which can be 180 degrees or approximately 180 degrees. In the second device posture, i.e., the electronic device is in a folded posture, the angle between the first body 10 and the second body 20 is the second angle, which can be 0 degrees, 45 degrees, 90 degrees, etc. A schematic diagram of the rear of the rotating mechanism 30 in the first device posture is shown below. Figure 5 As shown, the front view of the rotating mechanism 30 is as follows. Figure 10 As shown. A schematic diagram of the rotating mechanism 30 in the second device orientation is shown below. Figure 14 As shown.

[0057] like Figure 3 , Figure 5 and Figure 6 As shown, the rotating mechanism 30 includes a base 33, a housing 34, a mounting base 35, a first rotating assembly 31, and a second rotating assembly 32. The mounting base 35 is fixed to the base 33, and the first rotating assembly 31 and the second rotating assembly 32 are mounted on the mounting base 35. The first rotating assembly 31 includes a first rotating shaft 311, and the second rotating assembly 32 includes a second rotating shaft 321. The first rotating shaft 311 and the second rotating shaft 321 are spaced apart. The central axis of the first rotating shaft 311 is described as the first axis, and the central axis of the second rotating shaft 321 is described as the second axis. The first axis and the second axis are parallel to each other. The first rotating assembly 31 also includes a first cam 312, and the second rotating assembly 32 also includes a second cam 322. The first cam 312 is sleeved on the first rotating shaft 311, and the second cam 322 is sleeved on the second rotating shaft 321. The first cam 312 can rotate around the first axis of the first rotating shaft 311, and the second cam 322 can rotate around the second axis of the second rotating shaft 321. The first rotating assembly 31 further includes a first gear 313, and the second rotating assembly 32 further includes a second gear 323. The first gear 313 and the second gear 323 can be meshed together. The first gear 313 meshes with a first cam 312, and the second gear 323 meshes with a second cam 322. The rotation axis of the first gear 313 is described as a third axis, and the rotation axis of the second gear 323 is described as a fourth axis. Figure 3 and Figure 4As shown, the plane containing the first and second axes is described as the first plane 301, and the plane containing the third and fourth axes is described as the second plane 302. The first plane 301 and the second plane 302 are parallel to each other and spaced apart in a direction perpendicular to the width of the base 33; that is, the first plane 301 and the second plane 302 satisfy the conditions of being non-coplanar and non-intersecting. Figure 3 As shown, the housing 34 has a certain curvature and can be approximately U-shaped. A receiving space is formed between the base 33 and the housing 34, and most of the parts of the rotating mechanism 30 are located in the receiving space. Figure 3 and Figure 4 As shown, the second plane 302 is lower than the first plane 301, meaning the second plane 302 is closer to the housing 34 than the first plane 301. The first rotating assembly 31 includes a first rotating shaft 311, a first cam 312 sleeved on the first rotating shaft 311, and a first gear 313. The second rotating assembly 32 includes a second rotating shaft 321, a second cam 322 sleeved on the second rotating shaft 321, and a second gear 323. For ease of description, the first cam 312 and the second cam 322 are collectively referred to as cams, and the first gear 313 and the second gear 323 are collectively referred to as gears.

[0058] like Figure 1 and Figure 2 As shown, the display screen 40 includes a first portion 41, a second portion 42, and a deformable portion 43. In a first device posture, the deformable portion 43 is in a flattened state. In a second device posture, the deformable portion 43 is in a bent state, and the bending state of the deformable portion 43 varies depending on the angle between the first body 10 and the second body 20. For example, when the angle between the first body 10 and the second body 20 is 0 degrees, the deformable portion 43 can be approximately teardrop-shaped.

[0059] like Figure 1 As shown, the electronic device also includes a first support assembly 37 and a second support assembly 38. A first cam 312 can be connected to the first body 10 via the first support assembly 37, and a second cam 322 can be connected to the second body 20 via the second support assembly 38. The first support assembly 37 and the second support assembly 38 are described in detail below. Figure 1 and Figure 3 As shown, in the first device posture, the support surfaces of the first support assembly 37 and the second support assembly 38 are coplanar, and the first support assembly 37 and the second support assembly 38 are used to support the deformable part 43 in its flattened state. It can be understood that, in the first device posture, the surface of the base 33 facing away from the housing 34 can support the deformable part 43 in its flattened state. Figure 2 and Figure 4As shown, in the second device posture, the support surface of the first support component 37 and the support surface of the second support component 38 form a certain angle, and the support surface of the first support component 37 and the support surface of the second support component 38 are used to support the deformable part 43 in the bent state.

[0060] like Figure 6 As shown, the electronic device also includes a trajectory component 39, such as Figure 7 , Figure 8 , Figure 11 and Figure 12 As shown, the trajectory assembly 39 includes a first trajectory member 391 and a second trajectory member 392. The mounting base 35 is provided with a first arc-shaped track and a second arc-shaped track. The first trajectory member 391 is rotatably mounted on the first arc-shaped track, and the second trajectory member 392 is rotatably mounted on the second arc-shaped track. The first trajectory member 391 provides a motion trajectory for the rotation of the first body 10, and the second trajectory member 392 provides a motion trajectory for the rotation of the second body 20. The first trajectory member 391 can be connected to the first support assembly 37, and the second trajectory member 392 can be connected to the second support assembly 38.

[0061] The first cam 312 rotates about a first axis, and the second cam 322 rotates about a second axis. The first and second axes are located in the first plane 301. The first gear 313 rotates about a third axis, and the second gear 323 rotates about a fourth axis. The third and fourth axes are located in the second plane 302.

[0062] The second plane 302 and the first plane 301 are not coplanar. The base 33 has a length direction and a width direction. The first cam 312, the first gear 313, the second gear 323, and the second cam 322 are arranged sequentially along the width direction of the base 33. This can save the space occupied by the two cams and two gears in the width direction. In the fully folded state, it is beneficial to make the body thinner and lighter. The fully folded state means that the angle between the first body 10 and the second body 20 is 0 degrees or close to 0 degrees. In addition, the center of the first cam 312 and the center of the second cam 322 are farther away from the housing 34 than the center of the first gear 313 and the center of the second gear 323. Therefore, the diameter of the first cam 312 and the second cam 322 can be increased as needed. By increasing the diameter of the first cam 312 and the second cam 322, the torque can be increased to a certain extent. At the same time, it is beneficial to improve the structural strength of the first cam 312 and the second cam 322, thereby improving the durability of the two cams.

[0063] In the embodiments disclosed herein, the rotation axis of the first cam 312 and the rotation axis of the second cam 322 are located on the first plane 301, and the rotation axis of the first gear 313 and the rotation axis of the second gear 323 are located on the second plane 302. The first plane 301 and the second plane 302 are not coplanar and do not intersect, which can save space occupied by the rotating mechanism 30 in the width direction, which is beneficial to the thinning of electronic devices. In addition, the space saved can be used to increase the radial dimensions of the first cam 312 and the second cam 322 as needed, which is beneficial to increasing the torque of the rotating mechanism 30 and improving the structural strength and durability of the two cams.

[0064] In embodiments of this disclosure, such as Figure 3 and Figure 4 As shown, the first gear 313 and the second gear 323 are identical, and the radius of their tip circles is the first radius. The first gear 313 and the second gear 323 mesh, and rotate synchronously to synchronize the rotation of the first body 10 relative to the second body 20. The first cam 312 with first teeth and the second cam 322 with second teeth are identical, and the radius of their tip circles is the second radius. The first tooth of the first cam 312 meshes with the first gear 313, and the second tooth of the second cam 322 meshes with the second gear 323. The first cam 312 drives the first gear 313 to rotate, and the second cam 322 drives the second gear 323 to rotate. The first cam 312 and the second cam 322 also provide the force during rotation and the force to maintain the device's posture. The first radius is smaller than the second radius.

[0065] like Figure 8 , Figure 9 , Figure 12 and Figure 13 As shown, the structure of the first gear 313 can be the same as that of the second gear 323. The radius of the addendum circle of the first gear 313 and the radius of the addendum circle of the second gear 323 are described as the first radius. The first gear 313 and the second gear 323 are meshed together, and the number of teeth of the first gear 313 and the second gear 323 is set according to actual needs. The number of teeth of the first gear 313 and the second gear 323 can be 10.

[0066] like Figure 6 and Figure 11 As shown, the structure of the first cam 312 can be the same as that of the second cam 322. A first tooth is provided on the circumferential surface of the first cam 312, and a second tooth is provided on the circumferential surface of the second cam 322. The radius of the tip circle of the first tooth and the radius of the tip circle of the second tooth are described as the second radius. The number of teeth in the first tooth and the second tooth are set according to actual needs. The number of teeth in the first tooth and the second tooth can be 4.

[0067] The first tooth of the first cam 312 meshes with the first gear 313, and the second tooth of the second cam 322 meshes with the second gear 323. The first gear 313 meshes with the second gear 323. A rotational force is applied to the first body 10 toward the side facing the second body 20, causing the first cam 312 to rotate around the first axis 311, which in turn drives the first gear 313 to rotate around the third axis. Simultaneously, a rotational force is applied to the second body 20 toward the side facing the first body 10, causing the second cam 322 to rotate around the second axis 321, which in turn drives the second gear 323 to rotate around the fourth axis. This achieves the opposite rotation of the first body 10 and the second body 20. A flipping force is applied to the first body 10 in the direction opposite to the second body 20, causing the first cam 312 to rotate around the first shaft 311, which in turn drives the first gear 313 to rotate around the third axis. Simultaneously, a flipping force is applied to the second body 20 in the direction opposite to the first body 10, causing the second cam 322 to rotate around the second shaft 321, which in turn drives the second gear 323 to rotate around the fourth axis. This achieves opposite rotation of the first body 10 and the second body 20. The first gear 313 and the second gear 323 are meshed and can rotate synchronously, ensuring that the rotation of the first body 10 and the second body 20 remains synchronized.

[0068] In some embodiments, such as Figure 6 As shown, a first elastic element 316, which can be a cylindrical spring, is sleeved on the first rotating shaft 311. The end face of the first cam 312 abuts against the first elastic element 316, and the first elastic element 316 is under pressure. A second elastic element 326, which can also be a cylindrical spring, is sleeved on the second rotating shaft 321. The end face of the second cam 322 abuts against the second elastic element 326, and the second elastic element 326 is under pressure. During the rotation of the first cam 312 and the second cam 322, the first elastic element 316 compresses the first cam 312 to generate a damping force, and the second elastic element 326 compresses the second cam 322 to generate a damping force. The damping force ensures the opening and closing feel of the electronic device.

[0069] The first tooth of the first cam 312 meshes with the first gear 313, and the second tooth of the second cam 322 meshes with the second gear 323, enabling the electronic device to hover at multiple angles.

[0070] The first plane 301 is farther away from the housing 34 than the second plane 302. The vertical distance between the rotation axis of the first cam 312 and the inner wall surface of the housing 34 is greater than the vertical distance between the rotation axis of the first gear 313 and the inner wall surface of the housing 34. The radius of the addendum circle of the first cam 312 can be greater than the radius of the addendum circle of the first gear 313, that is, the second radius is greater than the first radius. The vertical distance between the rotation axis of the second cam 322 and the inner wall surface of the housing 34 is greater than the vertical distance between the rotation axis of the second gear 323 and the inner wall surface of the housing 34. The radius of the addendum circle of the second cam 322 can be greater than the radius of the addendum circle of the second gear 323, that is, the second radius is greater than the first radius.

[0071] By increasing the radial dimensions of the first cam 312 and the second cam 322, the torque of both cams can be increased, which also helps to improve the structural strength of the two cams. With the radial dimensions of the first cam 312 and the second cam 322 increased, the tooth thickness of the first tooth and the second tooth can also be increased, correspondingly increasing the tooth thickness of the first gear 313 and the second gear 323. Increased tooth thickness improves the wear resistance of the teeth, making them less prone to breakage, especially in the event of a drop, thus extending the service life of the two cams and the two gears.

[0072] In the embodiments disclosed herein, the first cam 312 drives the first gear 313 to rotate, and the second cam 322 drives the second gear 323 to rotate. The first gear 313 and the second gear 323 are meshed together to achieve synchronization of the rotation of the first body 10 and the second body 20. The radii of the tip circles of the two cams are larger than the radii of the tip circles of the two gears, which is beneficial to improving the structural strength of the two cams and increasing the torque. The wear resistance of the teeth can be improved by increasing the tooth thickness, which is beneficial to improving the service life of the two cams and the two gears.

[0073] In embodiments of this disclosure, such as Figure 6 , Figure 7 and Figure 11As shown, the first cam 312 includes a first sub-cam 3121 and a second sub-cam 3122 arranged opposite to each other along the axis of the first cam 312. The first end face of the first sub-cam 3121 is opposite to the first end face of the second sub-cam 3122, and the second end face of the first sub-cam 3121 is opposite to the second end face of the second sub-cam 3122. The second end faces of the first sub-cam 3121 and the second sub-cam 3122 are used to increase the frictional force that the first cam 312 can provide. The second cam 322 includes a third sub-cam 3221 and a fourth sub-cam 3222 arranged opposite to each other along the axis of the second cam 322. The first end face of the third sub-cam 3221 is opposite to the first end face of the fourth sub-cam 3222, and the second end face of the third sub-cam 3221 is opposite to the second end face of the fourth sub-cam 3222. The second end faces of the third sub-cam 3221 and the fourth sub-cam 3222 are used to increase the frictional force that the second cam 322 can provide.

[0074] like Figures 6 to 9 as well as Figures 11 to 13 As shown, the first cam 312 includes a first sub-cam 3121 and a second sub-cam 3122 arranged opposite to each other. The first sub-cam 3121 and the second sub-cam 3122 are sleeved on the first rotating shaft 311. The first sub-cam 3121 and the second sub-cam 3122 are rotatably connected to the first rotating shaft 311. In the axial direction of the first sub-cam 3121, the first sub-cam 3121 has two opposing end faces, which are respectively described as the first end face and the second end face of the first sub-cam 3121. In the axial direction of the second sub-cam 3122, the second sub-cam 3122 also has two opposing end faces, which are respectively described as the first end face and the second end face of the second sub-cam 3122.

[0075] The first end face of the first sub-cam 3121 is opposite to the first end face of the second sub-cam 3122. During the rotation of the first cam 312 around the first rotating shaft 311, the first end face of the first sub-cam 3121 can generate friction through the concave cam structure, and the first end face of the second sub-cam 3122 can also generate friction through the concave cam structure. The second end face of the first sub-cam 3121 is opposite to the second end face of the second cam 3122. During the rotation of the first cam 312 around the first rotating shaft 311, the second end face of the first sub-cam 3121 can generate friction through surface friction, and the second end face of the second cam 3122 can also generate friction through surface friction. Without changing the overall length of the first cam 312, the first cam 312 is divided into a first sub-cam 3121 and a second sub-cam 3122. During the rotation of the first cam 312, friction can be generated on the first end face of the first sub-cam 3121, the second end face of the first sub-cam 3121, the first end face of the second sub-cam 3122, and the second end face of the second sub-cam 3122. That is, the first cam 312 can have four friction pairs, which increases the torque compared to two friction pairs.

[0076] like Figures 6 to 9 as well as Figures 11 to 13 As shown, the second cam 322 includes a third sub-cam 3221 and a fourth sub-cam 3222 arranged opposite to each other. The third sub-cam 3221 and the fourth sub-cam 3222 are sleeved on the second rotating shaft 321. The third sub-cam 3221 and the fourth sub-cam 3222 are rotatably connected to the second rotating shaft 321. In the axial direction of the third sub-cam 3221, the third sub-cam 3221 has two opposing end faces, which are described as the first end face and the second end face of the third sub-cam 3221, respectively. In the axial direction of the fourth sub-cam 3222, the fourth sub-cam 3222 also has two opposing end faces, which are described as the first end face and the second end face of the fourth sub-cam 3222, respectively.

[0077] The first end face of the third sub-cam 3221 is opposite to the first end face of the fourth sub-cam 3222. During the rotation of the second cam 322 around the second rotating shaft 321, the first end face of the third sub-cam 3221 can generate friction through the concave cam structure, and the first end face of the fourth sub-cam 3222 can also generate friction through the concave cam structure. The second end face of the third sub-cam 3221 is opposite to the second end face of the fourth cam 3222. During the rotation of the second cam 322 around the second rotating shaft 321, the second end face of the third sub-cam 3221 can generate friction through surface friction, and the second end face of the fourth cam 3222 can also generate friction through surface friction. Without changing the overall length of the second cam 322, the second cam 322 is divided into a third sub-cam 3221 and a fourth sub-cam 3222. During the rotation of the second cam 322, friction can be generated on the first end face of the third sub-cam 3221, the second end face of the third sub-cam 3221, the first end face of the fourth sub-cam 3222, and the second end face of the fourth sub-cam 3222. That is, the second cam 322 can have four friction pairs, which increases the torque compared to two friction pairs.

[0078] A rotating structure consisting of a first cam 312, a first gear 313, a second gear 323, and a second cam 322 is described as a rotating unit. The first cam 312 includes a first sub-cam 3121 and a second sub-cam 3122, and the second cam 322 includes a third sub-cam 3221 and a fourth sub-cam 3222. The first cam 312 and the second cam 322 in the rotating unit, in conjunction with other structural components, can form eight friction pairs. Compared to the four friction pairs in an integral structure, this increases the torque of a single rotating unit. Under the premise that the total torque of the electronic device remains unchanged, the increased torque of a single rotating unit can reduce the number of rotating units. For example, when the number of friction pairs in a single rotating unit is four, four rotating units need to be arranged sequentially along the length of the base 33 to meet the torque requirements. When the number of friction pairs in a single rotating unit is eight, such as... Figure 5 , Figure 10 and Figure 14 As shown, three rotating units arranged sequentially along the length of the base 33 are sufficient to meet the torque requirement. While meeting the torque requirement, reducing the number of rotating units helps reduce the number of parts and lower costs; it also facilitates assembly and maintenance; and it saves space, making it easier to install other parts.

[0079] In the embodiments disclosed herein, the first cam 312 includes a first sub-cam 3121 and a second sub-cam 3122 arranged opposite to each other, and the second cam 322 includes a third sub-cam 3221 and a fourth sub-cam 3222 arranged opposite to each other. The first cam 312 and the second cam 322 may have eight friction pairs. Without changing the length of the two cams, this is beneficial to increasing the torque, which in turn is beneficial to ensuring the opening and closing feel of the electronic device. In addition, it is beneficial to reduce the number of parts and reduce the cost of the electronic device.

[0080] In embodiments of this disclosure, such as Figure 7 and Figure 11 As shown, the rotating mechanism 30 includes a first rotating arm, a second rotating arm, and a friction element 36. The first rotating arm includes a first cam 312 and a first connecting arm connected to the first cam 312, and the first connecting arm is connected to the first body 10. The second rotating arm includes a second cam 322 and a second connecting arm connected to the second cam 322, and the second connecting arm is connected to the second body 20. The friction element 36 is located between the second end face of the first sub-cam 3121 and the second end face of the second sub-cam 3122, and between the second end face of the third sub-cam 3221 and the second end face of the fourth sub-cam 3222.

[0081] The first connecting arm is connected to the first body 10 via the first support assembly 37, and the second connecting arm is connected to the second body 20 via the second support assembly 38. A first connecting arm protrudes from the circumferential surface of the first cam 312, and the first connecting arm is slidably connected to the first support assembly 37, which is connected to the first body 10. A second connecting arm protrudes from the circumferential surface of the second cam 322, and the second connecting arm is slidably connected to the second support assembly 38, which is connected to the second body 20. In the first device posture, the support surfaces of the first support assembly 37 and the second support assembly 38 meet the flattening condition, and the first support assembly 37 and the second support assembly 38 are used to support the deformable part 43.

[0082] In some embodiments, such as Figure 7 , Figure 8 , Figure 11 and Figure 12As shown, the first support assembly 37 includes a first support plate 371 and a first connecting plate 372. The first connecting plate 372 is movably connected to the first track member 391. The first connecting plate 372 and the first support plate 371 can be movably connected via a rotary joint. The first connecting arm is slidably connected to the first connecting plate 372. The first track member 391 moves along a first arc-shaped track, allowing the first support plate 371 to move towards or away from the first cam 312 during rotation. The second support assembly 38 includes a second support plate 381 and a second connecting plate 382. The second connecting plate 382 is movably connected to the second track member 392. The second connecting plate 382 and the second support plate 381 can be movably connected via a rotary joint. The second connecting arm is slidably connected to the second connecting plate 382. The second track member 392 moves along a second arc-shaped track, allowing the second support plate 381 to move towards or away from the second cam 322 during rotation.

[0083] like Figure 1 and Figure 3 As shown, the electronic device is in a first device posture, the first support plate 371 and the second support plate 381 are coplanar, and the first support plate 371 and the second support plate 381 are close to each other. The first support plate 371 and the second support plate 381 are used to support the deformable part 43 of the display screen 40 in a flattened state. Figure 2 and Figure 4 As shown, the electronic device is in a second device posture. The first support plate 371 and the second support plate 381 are set at a certain angle. The first support plate 371, the base 33, and the second support plate 381 enclose a teardrop-shaped receiving space. The first support plate 371 and the second support plate 381 are used to support the deformable part 43 of the display screen 40 in a bent state. In the second device posture, the angle between the first support plate 371 and the second support plate 381 is as follows: Figure 15 and Figure 16 As shown.

[0084] like Figure 7 and Figure 11As shown, the friction element 36 can be fixed on the base 33. The friction element 36 includes a first friction part 361 and a second friction part 362. The first friction part 361 is sleeved on the first rotating shaft 311, and the second friction part 362 is sleeved on the second rotating shaft 321. The first friction part 361 is sandwiched between the first sub-cam 3121 and the second sub-cam 3122. The first friction part 361 has opposing first and second surfaces. The first surface forms a surface contact with the second end surface of the first sub-cam 3121, and the second surface forms a surface contact with the second end surface of the second sub-cam 3122. The second friction part 362 is sandwiched between the third sub-cam 3221 and the fourth sub-cam 3222. The second friction part 362 has opposing third and fourth surfaces. The third surface forms a surface contact with the second end surface of the third sub-cam 3221, and the fourth surface forms a surface contact with the second end surface of the fourth sub-cam 3222.

[0085] The first friction part 361 forms surface friction with the second end face of the first sub-cam 3121, and the first friction part 361 forms surface friction with the second end face of the second sub-cam 3122. During the rotation of the first cam 312, the two surface frictions can provide a large frictional force. The second friction part 362 forms surface friction with the second end face of the third sub-cam 3221, and the second friction part 362 forms surface friction with the second end face of the fourth sub-cam 3222. During the rotation of the second cam 322, the two surface frictions can provide a large frictional force. The first friction part 361 is sandwiched between the first sub-cam 3121 and the second sub-cam 3122, and does not occupy additional space inside the housing 34. The second friction part 362 is sandwiched between the third sub-cam 3221 and the fourth sub-cam 3222, and does not occupy additional space inside the housing 34.

[0086] like Figure 8 , Figure 9 , Figure 12 and Figure 13 As shown, the first connecting arm is slidably connected to the first connecting plate 372. The first connecting arm includes a first sub-connecting arm 3123 and a second sub-connecting arm 3124. The first sub-connecting arm 3123 protrudes from the circumferential surface of the first sub-cam 3121, and the second sub-connecting arm 3124 protrudes from the circumferential surface of the second sub-cam 3122.

[0087] In some embodiments, such as Figure 9 and Figure 13 As shown, the first sub-connecting arm 3123 and the second sub-connecting arm 3124 are independent of each other. Figure 8 and Figure 12 As shown, the first connecting plate 372 is provided with a first sliding groove 3721 and a second sliding groove 3722 spaced apart. The first sub-connecting arm 3123 is slidably engaged with the first sliding groove 3721, and the second sub-connecting arm 3124 is slidably engaged with the second sliding groove 3722.

[0088] In some embodiments, the ends of the first sub-connecting arm 3123 and the second sub-connecting arm 3124 can be connected as one unit, that is, the portion of the first sub-connecting arm 3123 away from the first friction part 361 and the portion of the second sub-connecting arm 3124 away from the first friction part 361 can be connected as one unit. A sliding groove is provided on the first connecting plate 372, and the ends of the first sub-connecting arm 3123 and the second sub-connecting arm 3124 are located in the sliding groove.

[0089] In some embodiments, such as Figure 9 and Figure 13 As shown, a first protrusion 31231 may be formed on the end face of the first sub-connecting arm 3123 facing the second sub-connecting arm 3124. The first protrusion 31231 may be a columnar body. Figure 8 and Figure 12 As shown, a first arc-shaped groove 3711 is provided on the first support plate 371, and a first protrusion 31231 is slidably disposed in the first arc-shaped groove 3711 of the first support plate 371. Figure 9 and Figure 13 As shown, a second protrusion 31241 may be formed on the end face of the second sub-connecting arm 3124 facing the first sub-connecting arm 3123. The second protrusion 31241 may be a columnar body. Figure 8 and Figure 12 As shown, the first support plate 371 is provided with a second arc-shaped groove 3712, and the second protrusion 31241 is slidably disposed in the second arc-shaped groove 3712 of the first support plate 371. The first sub-connecting arm 3123 and the second sub-connecting arm 3124 slide in cooperation with the first support plate 371, which helps to improve the stability of the movement of the first support plate 371, and also helps to improve the overall structural strength of the first connecting arm and the first support assembly 37.

[0090] In some embodiments, the first protrusion 31231 and the second protrusion 31241 can be connected as a single unit, making the first sub-connecting arm 3123 and the second sub-connecting arm 3124 a single structural component. The first arc-shaped groove 3711 and the second arc-shaped groove 3712 can communicate to form an arc-shaped groove, and the first protrusion 31231 and the second protrusion 31241 slide in cooperation with the arc-shaped groove. The first sub-connecting arm 3123 and the second sub-connecting arm 3124 being a single structural component helps to ensure the synchronization of the rotation of the first sub-cam 3121 and the second sub-cam 3122.

[0091] like Figure 8 , Figure 9 , Figure 12 and Figure 13As shown, the second connecting arm is slidably connected to the second connecting plate 382. The second connecting arm includes a third sub-connecting arm 3223 and a fourth sub-connecting arm 3224. The third sub-connecting arm 3223 protrudes from the circumferential surface of the third sub-cam 3221, and the fourth sub-connecting arm 3224 protrudes from the circumferential surface of the fourth sub-cam 3222.

[0092] In some embodiments, such as Figure 9 and Figure 13 As shown, the third sub-connecting arm 3223 and the fourth sub-connecting arm 3224 are independent of each other. Figure 8 and Figure 12 As shown, the second connecting plate 382 is provided with a third sliding groove 3821 and a fourth sliding groove 3822 spaced apart. The third sub-connecting arm 3223 is slidably engaged with the third sliding groove 3821, and the fourth sub-connecting arm 3224 is slidably engaged with the fourth sliding groove 3822.

[0093] In some embodiments, the ends of the third sub-connecting arm 3223 and the fourth sub-connecting arm 3224 can be connected as one unit, that is, the portion of the third sub-connecting arm 3223 away from the second friction part 362 and the portion of the fourth sub-connecting arm 3224 away from the second friction part 362 can be connected as one unit. A sliding groove is provided on the second connecting plate 382, ​​and the ends of the third sub-connecting arm 3223 and the fourth sub-connecting arm 3224 are located in the sliding groove.

[0094] In some embodiments, such as Figure 9 and Figure 13 As shown, a third protrusion 32231 may be formed on the end face of the third sub-connecting arm 3223 facing the fourth sub-connecting arm 3224. The third protrusion 32231 may be a columnar body. Figure 8 and Figure 12 As shown, the second support plate 381 is provided with a third arc-shaped groove 3811, and the third protrusion 32231 is slidably disposed in the third arc-shaped groove 3811 of the second support plate 381. Figure 9 and Figure 13 As shown, a fourth protrusion 32241 may be formed on the end face of the fourth sub-connecting arm 3224 facing the third sub-connecting arm 3223. The fourth protrusion 32241 may be a columnar body. Figure 8 and Figure 12 As shown, the second support plate 381 is provided with a fourth arc-shaped groove 3812, and the fourth protrusion 32241 is slidably disposed in the fourth arc-shaped groove 3812 of the second support plate 381. The third sub-connecting arm 3223 and the fourth sub-connecting arm 3224 slide with the second support plate 381, which helps to improve the stability of the movement of the second support plate 381, and also helps to improve the overall structural strength of the second connecting arm and the second support assembly 38.

[0095] In some embodiments, the third protrusion 32231 and the fourth protrusion 32241 can be connected as a single unit, making the third sub-connecting arm 3223 and the fourth sub-connecting arm 3224 a single structural component. The third arcuate groove 3811 and the fourth arcuate groove 3812 can communicate to form an arcuate groove, and the third protrusion 32231 and the fourth protrusion 32241 slide in cooperation with the arcuate groove. The third sub-connecting arm 3223 and the fourth sub-connecting arm 3224 being a single structural component helps to ensure the synchronization of the rotation of the third sub-cam 3221 and the fourth sub-cam 3222.

[0096] The first cam 312 is connected to the first support assembly 37 via the first connecting arm, and the second cam 322 is connected to the second support assembly 38 via the second connecting arm. The first connecting plate 372 of the first support assembly 37 is connected to the first body 10, and the second connecting plate 382 of the second support assembly 38 is connected to the second body 20. The first support assembly 37 and the second support assembly 38 are used to support the deformable part 43.

[0097] In the embodiments of this disclosure, the first friction part 361 of the friction member 36 is sandwiched between the first sub-cam 3121 and the second sub-cam 3122, and the first friction part 361 and the first cam 312 form two surface frictions; the second friction part 362 of the friction member 36 is sandwiched between the third sub-cam 3221 and the fourth sub-cam 3222, and the second friction part 362 and the second cam 322 form two surface frictions. Without occupying additional space, the friction force during the rotation of the two cams is effectively increased.

[0098] In embodiments of this disclosure, such as Figure 6 , Figure 7 and Figure 11 As shown, the rotating mechanism 30 includes a first rotating shaft 311, a first cam 312 sleeved on the first rotating shaft 311, and a first concave wheel 314, a second concave wheel 315, and a first elastic member 316 sleeved on the first rotating shaft 311. The first friction part 361 of the friction member 36 is sandwiched between the first sub-cam 3121 and the second sub-cam 3122. The first sub-cam 3121 is in frictional contact with the first concave wheel 314, and the first sub-cam 3121 is in frictional contact with the first friction part 361; the second sub-cam 3122 is in frictional contact with the second concave wheel 315, and the second sub-cam 3122 is in frictional contact with the first friction part 361; the first elastic member 316 abuts against the first concave wheel 314.

[0099] A first elastic element 316, a first concave wheel 314, a first sub-cam 3121, a first friction part 361, a second sub-cam 3122, and a second concave wheel 315 are sequentially mounted on a first rotating shaft 311. The first concave wheel 314 is clearance-fitted with the first rotating shaft 311 and can move along the axial direction of the first rotating shaft 311. The second concave wheel 315 is clearance-fitted with the first rotating shaft 311 and can move along the axial direction of the first rotating shaft 311. The first rotating shaft 311 is provided with a first limiting part and a second limiting part spaced apart. The first elastic element 316, the first concave wheel 314, the first sub-cam 3121, the first friction part 361, the second sub-cam 3122, and the second concave wheel 315 are installed between the first limiting part and the second limiting part. One side of the first concave wheel 314 is provided with a groove, and the other side of the first concave wheel 314 is a flat surface; one side of the second concave wheel 315 is provided with a groove, and the other side of the second concave wheel 315 is a flat surface. The raised arc surface of the first sub-cam 3121 engages with the corresponding groove of the first concave wheel 314, and the raised arc surface of the second sub-cam 3122 engages with the corresponding groove of the second concave wheel 315. The first elastic element 316 may include a cylindrical spring. One end of the first elastic element 316 abuts against the plane of the first concave wheel 314, and the other end of the first elastic element 316 abuts against the first limiting part. The first elastic element 316 is always in a compressed state.

[0100] During the rotation of the first cam 312, the first sub-cam 3121 rotates and pushes the first concave wheel 314 to move along the axial direction of the first rotating shaft 311. The first concave wheel 314 presses against the first elastic member 316. The rebound force of the first elastic member 316 causes the first concave wheel 314 to press against the first sub-cam 3121, resulting in friction between the first sub-cam 3121 and the first concave wheel 314, as well as friction between the first sub-cam 3121 and the first friction part 361. At the same time, the second concave wheel 315 abuts against the second limiting part. The distance between the first limiting part and the second limiting part is a fixed value. The first elastic member 316 is in a compressed state, causing the second concave wheel 315 to press against the second sub-cam 3122, resulting in friction between the second sub-cam 3122 and the second concave wheel 315, as well as friction between the second sub-cam 3122 and the first friction part 361. Thus, the damping force is provided by the cooperation of the first elastic element 316, the first concave wheel 314, the first sub-cam 3121, the first friction part 361, the second sub-cam 3122, and the second concave wheel 315, thereby achieving stable hovering at multiple angles.

[0101] In the embodiments disclosed herein, the first sub-cam 3121 is engaged with the first concave wheel 314, and the second sub-cam 3122 is engaged with the second concave wheel 315. The concave cam changes the torque output during rotation through its irregular profile. The degree of compression on the first elastic element 316 varies depending on the engagement position of the concave cam. The combination of the concave cam and the first elastic element 316 achieves multi-angle hovering and a smooth opening and closing feel.

[0102] In embodiments of this disclosure, such as Figure 6 , Figure 7 and Figure 11 As shown, the rotating mechanism 30 includes a second rotating shaft 321, a second cam 322 sleeved on the second rotating shaft 321, and a third concave wheel 324, a fourth concave wheel 325, and a second elastic member 326 also sleeved on the second rotating shaft 321. The second friction part 362 of the friction member 36 is sandwiched between the third sub-cam 3221 and the fourth sub-cam 3222. The third sub-cam 3221 is in frictional contact with the third concave wheel 324, and the third sub-cam 3221 is in frictional contact with the second friction part 362; the fourth sub-cam 3222 is in frictional contact with the fourth concave wheel 325, and the fourth sub-cam 3222 is in frictional contact with the second friction part 362; the second elastic member 326 abuts against the third concave wheel 324.

[0103] A second elastic element 326, a third concave wheel 324, a third sub-cam 3221, a second friction part 362, a fourth sub-cam 3222, and a fourth concave wheel 325 are sequentially mounted on the second rotating shaft 321. The third concave wheel 324 is clearance-fitted with the second rotating shaft 321 and can move along the axial direction of the second rotating shaft 321. The fourth concave wheel 325 is clearance-fitted with the second rotating shaft 321 and can move along the axial direction of the second rotating shaft 321. The second rotating shaft 321 is provided with a third limiting part and a fourth limiting part spaced apart. The second elastic element 326, the third concave wheel 324, the third sub-cam 3221, the second friction part 362, the fourth sub-cam 3222, and the fourth concave wheel 325 are installed between the third limiting part and the fourth limiting part. One side of the third concave wheel 324 has a groove, and the other side of the third concave wheel 324 is a flat surface; one side of the fourth concave wheel 325 has a groove, and the other side of the fourth concave wheel 325 is a flat surface. The raised arc surface of the third sub-cam 3221 engages with the corresponding groove of the third concave wheel 324, and the raised arc surface of the fourth sub-cam 3222 engages with the corresponding groove of the fourth concave wheel 325. The second elastic element 326 may include a cylindrical spring. One end of the second elastic element 326 abuts against the plane of the third concave wheel 324, and the other end of the second elastic element 326 abuts against the third limiting part. The second elastic element 326 is always in a compressed state.

[0104] During the rotation of the second cam 322, the third sub-cam 3221 pushes the third concave wheel 324 to move along the axial direction of the second rotating shaft 321. The third concave wheel 324 presses against the second elastic member 326. The rebound force of the second elastic member 326 causes the third concave wheel 324 to press against the third sub-cam 3221, resulting in friction between the third sub-cam 3221 and the third concave wheel 324, as well as friction between the third sub-cam 3221 and the second friction part 362. At the same time, the fourth concave wheel 325 abuts against the fourth limiting part. The distance between the third limiting part and the fourth limiting part is a constant value. The second elastic member 326 is under pressure, causing the fourth concave wheel 325 to press against the fourth sub-cam 3222, resulting in friction between the fourth sub-cam 3222 and the fourth concave wheel 325, as well as friction between the fourth sub-cam 3222 and the second friction part 362. Thus, the second elastic element 326, the third concave wheel 324, the third sub-cam 3221, the second friction part 362, the fourth sub-cam 3222 and the fourth concave wheel 325 provide damping force, thereby achieving stable hovering at multiple angles.

[0105] In some embodiments, the first sub-cam 3121 has a first tooth on its circumferential surface and is meshed with the first gear 313. The third sub-cam 3221 has a second tooth on its circumferential surface and is meshed with the second gear 323.

[0106] In some embodiments, the first concave wheel 314 and the third concave wheel 324 are connected as one unit, thereby restricting the rotation of the first concave wheel 314 and the third concave wheel 324, ensuring that the first concave wheel 314 presses the first elastic member 316 in the axial direction of the first rotating shaft 311, and ensuring that the third concave wheel 324 presses the second elastic member 326 in the axial direction of the second rotating shaft 321.

[0107] In the embodiments disclosed herein, the third sub-cam 3221 is engaged with the third concave wheel 324, and the fourth sub-cam 3222 is engaged with the fourth concave wheel 325. The concave cam changes the torque output during rotation through its irregular profile. The different engagement positions of the concave cam result in different degrees of compression on the second elastic element 326. The combination of the concave cam and the second elastic element 326 achieves multi-angle hovering and a smooth opening and closing feel.

[0108] In embodiments of this disclosure, such as Figure 3 and Figure 4 As shown, the rotating mechanism 30 drives the first gear 313 to rotate through the first tooth of the first cam 312 and drives the second gear 323 to rotate through the second tooth of the second cam 322; the first gear 313 and the second gear 323 are meshed together.

[0109] In some embodiments, such as Figure 6 , Figure 7 andFigure 11 As shown, the first cam 312 includes a first sub-cam 3121 and a second sub-cam 3122. The first sub-cam 3121 has a first tooth on its circumferential surface, which meshes with the first gear 313. The second cam 322 includes a third sub-cam 3221 and a fourth sub-cam 3222. The third sub-cam 3221 has a second tooth on its circumferential surface, which meshes with the second gear 323.

[0110] The friction element 36 includes a first friction part 361 and a second friction part 362, which can be connected as a whole by a connecting part. The connecting part can provide a mounting base for the first gear 313 and the second gear 323, which are rotatably mounted on one end of the connecting part.

[0111] When switching from the first device posture to the second device posture, a flipping force is applied to the first body 10 toward the side facing the second body 20. The first sub-cam 3121 and the second sub-cam 3122 rotate around the first rotating shaft 311. The first sub-cam 3121 drives the first gear 313 to rotate around the third axis. At the same time, a flipping force is applied to the second body 20 toward the side facing the first body 10. The third sub-cam 3221 and the fourth sub-cam 3222 rotate around the second rotating shaft 321. The third sub-cam 3221 drives the second gear 323 to rotate around the fourth axis. This achieves the opposite rotation of the first body 10 and the second body 20, and the first body 10 and the second body 20 rotate synchronously. In the second device posture, the rotating mechanism 30 is as follows: Figure 14 , Figure 15 and Figure 16 As shown.

[0112] During the rotation of the first body 10 and the second body 20 towards each other, the first support plate 371 moves away from the first cam 312 as the first track member 391 rotates, and the second support plate 381 moves away from the second cam 322 as the second track member 392 rotates. When the electronic device switches to the second device posture, such as Figure 2 As shown, the first support plate 371 and the second support plate 381 support the deformable part 43 in a bent state.

[0113] When switching from the second device posture to the first device posture, a flipping force is applied to the first body 10 toward the side opposite to the second body 20. The first sub-cam 3121 and the second sub-cam 3122 rotate around the first rotating shaft 311. The first sub-cam 3121 drives the first gear 313 to rotate around the third axis. At the same time, a flipping force is applied to the second body 20 toward the side opposite to the first body 10. The third sub-cam 3221 and the fourth sub-cam 3222 rotate around the second rotating shaft 321. The third sub-cam 3221 drives the second gear 323 to rotate around the fourth axis. This achieves the opposite rotation of the first body 10 and the second body 20, while keeping them rotating synchronously. In the first device posture, the front view of the rotating mechanism 30 is shown below. Figure 10 and Figure 11 As shown, the rear view of the rotating mechanism 30 is as follows. Figure 5 , Figure 6 and Figure 7 As shown.

[0114] During the opposite rotation of the first body 10 and the second body 20, the first support plate 371 moves toward the direction closer to the first cam 312 as the first track member 391 rotates, and the second support plate 381 moves toward the direction closer to the second cam 322 as the second track member 392 rotates. When the electronic device switches to the first device posture, such as Figure 1 and Figure 3 As shown, the first support plate 371 and the second support plate 381 support the deformable part 43 in a flattened state.

[0115] In the embodiments disclosed herein, the first cam 312 rotates around the first pivot 311, driving the first gear 313 to rotate around the third axis, and the second cam 322 rotates around the second pivot 321, driving the second gear 323 to rotate around the fourth axis. The first gear 313 and the second gear 323 mesh and drive each other, thereby achieving synchronous rotation of the first body 10 and the second body 20. The torque required for rotation and the opening and closing feel can be satisfied by adjusting the distance between the first plane 301 and the second plane 302, the radius of the tip circle of the two cams, the radius of the tip circle of the two gears, and the tooth thickness of the two cams and the two gears.

[0116] In embodiments of this disclosure, such as Figure 3 and Figure 4 As shown, the first cam 312 and the second cam 322 are located inside the housing 34 of the rotating mechanism 30, and the first gear 313 and the second gear 323 are located inside the housing 34 of the rotating mechanism 30.

[0117] The housing 34 can be approximately U-shaped, forming an accommodating space between the base 33 and the housing 34, in which the two cams and two gears are located. The housing 34 covers the outside of the two cams and two gears, protecting them and other structural components.

[0118] In embodiments of this disclosure, such as Figure 3 , Figure 5 , Figure 10 and Figure 14 As shown, the rotating mechanism 30 includes a base 33 and a housing 34. The base 33 is located inside the housing 34, and three rotating units are provided on the base 33 at intervals. The area between two adjacent rotating units serves as the area where the first body 10 and the second body 20 pass through. The rotating unit includes a first cam 312, a second cam 322, a first gear 313, and a second gear 323.

[0119] like Figure 6 As shown, a single rotating unit includes a first rotating assembly 31 and a second rotating assembly 32. The first rotating assembly 31 includes a first rotating shaft 311 and a first cam 312, a first concave wheel 314, a second concave wheel 315, and a first elastic element 316 sleeved on the first rotating shaft 311. The first cam 312 is meshed with a first gear 313. The second rotating assembly 32 includes a second rotating shaft 321 and a second cam 322, a third concave wheel 324, a fourth concave wheel 325, and a second elastic element 326 sleeved on the second rotating shaft 321. The second cam 322 is meshed with a second gear 323. The rotation axes of the first cam 312 and the second cam 322 are located on a first plane 301, and the rotation axes of the first gear 313 and the second gear 323 are located on a second plane 302. The centers of the two cams are farther from the inner wall of the housing 34 than the centers of the two gears, and the radius of the addendum circles of the two cams can be larger than the radius of the addendum circles of the two gears.

[0120] The torque of the rotating unit can be increased by increasing the radial dimensions of the first cam 312 and the second cam 322. Increasing the radial dimension of the first cam 312 increases the contact area between it and the first concave wheel 314, and the contact area between it and the third concave wheel 324, resulting in increased friction. Similarly, increasing the radial dimension of the second cam 322 increases the contact area between it and the third concave wheel 324, and the contact area between it and the fourth concave wheel 325, also resulting in increased friction. Therefore, the torque of a single rotating unit increases accordingly.

[0121] In some embodiments, such as Figure 6 , Figure 7 and Figure 11As shown, the first cam 312 includes a first sub-cam 3121 and a second sub-cam 3122. A first friction part 361 is sandwiched between the first sub-cam 3121 and the second sub-cam 3122. A friction pair is formed between the first sub-cam 3121 and the first concave wheel 314, and a friction pair is formed between the first sub-cam 3121 and the first friction part 361. A friction pair is formed between the second sub-cam 3122 and the second concave wheel 315, and a friction pair is formed between the second sub-cam 3122 and the first friction part 361. Figure 6 , Figure 7 and Figure 11 As shown, the second cam 322 includes a third sub-cam 3221 and a fourth sub-cam 3222. A second friction part 362 is sandwiched between the third sub-cam 3221 and the fourth sub-cam 3222. A friction pair is formed between the third sub-cam 3221 and the third concave wheel 324, and a friction pair is formed between the third sub-cam 3221 and the second friction part 362. A friction pair is formed between the fourth sub-cam 3222 and the fourth concave wheel 325, and a friction pair is formed between the fourth sub-cam 3222 and the second friction part 362. The torque of a single rotating unit can be increased by increasing the friction pair between the first cam 312 and the second cam 322.

[0122] The torque of a rotating unit can be increased by increasing the radial dimensions of the two cams in a single rotating unit and / or by increasing the number of friction pairs between the two cams in a single rotating unit. Because the torque of a single rotating unit is increased, the number of rotating units can be reduced while maintaining the torque of the electronic device at a constant or slightly varying level. For example, three rotating units spaced apart can meet the torque requirements of the electronic device. Reducing the number of rotating units results in a corresponding reduction in the number of parts, which helps to lower costs and facilitates assembly and maintenance.

[0123] With a reduced number of rotating units, space can be saved for the layout of other structural components. The space between two adjacent rotating units can be used for the routing of cables, antennas, etc., for the first body 10 and the second body 20, which is beneficial for the rational layout of components between the base 33 and the housing 34.

[0124] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this disclosure can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this disclosure. In particular, the features described in the various embodiments and / or claims of this disclosure can be combined or combined in various ways without departing from the spirit and teachings of this disclosure. All such combinations and / or combinations fall within the scope of this disclosure.

[0125] Although this disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made to this disclosure without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of this disclosure should not be limited to the above embodiments, but should be defined not only by the appended claims, but also by their equivalents.

Claims

1. An electronic device, comprising: first ontology; The second body is rotatably connected to the first body via a rotating mechanism; The display screen includes a first part connected to the first body, a second part connected to the second body, and a deformable part located between the first part and the second part; the electronic device is in a first device posture, and the deformable part satisfies a flattening condition; the electronic device is in a second device posture, and the deformable part satisfies a deformation condition; The relative rotation between the first body and the second body is used for switching between the first device posture and the second device posture; The first and second cams of the rotating mechanism, which are used to respond to the rotation, are not coplanar with respect to the first plane of the rotating mechanism and the first and second gears of the rotating mechanism, which are used to respond to the rotation, are not intersecting with respect to the second plane of the rotating mechanism. The second plane is lower than the first plane.

2. The electronic device according to claim 1, The first gear is identical to the second gear and the radius of the tip circle is the first radius; the first gear meshes with the second gear and rotates synchronously with the second gear to synchronize the rotation of the first body relative to the second body; The first cam with a first tooth and the second cam with a second tooth are identical and the radius of the tooth tip circle is the second radius. The first tooth of the first cam meshes with the first gear, and the second tooth of the second cam meshes with the second gear. The first cam is used to drive the first gear to rotate, and the second cam is used to drive the second gear to rotate. The first cam and the second cam are also used to provide the force for the rotation process and the force for maintaining the posture of the equipment. The first radius is smaller than the second radius.

3. The electronic device according to claim 2, The first cam includes a first sub-cam and a second sub-cam arranged opposite to each other along the axis of the first cam. The first end face of the first sub-cam is opposite to the first end face of the second sub-cam, and the second end face of the first sub-cam is opposite to the second end face of the second sub-cam. The second end faces of the first sub-cam and the second end faces of the second sub-cam are used to increase the frictional force that the first cam can provide. The second cam includes a third sub-cam and a fourth sub-cam arranged opposite each other along the axis of the second cam. The first end face of the third sub-cam is opposite to the first end face of the fourth sub-cam, and the second end face of the third sub-cam is opposite to the second end face of the fourth sub-cam. The second end faces of the third sub-cam and the fourth sub-cam are used to increase the frictional force that the second cam can provide.

4. The electronic device according to claim 3, wherein the rotating mechanism comprises: A first rotating arm, the first rotating arm including a first cam and a first connecting arm connected to the first cam, the first connecting arm being connected to the first body; The second rotating arm includes the second cam and a second connecting arm connected to the second cam, and the second connecting arm is connected to the second body; The friction element is located between the second end face of the first sub-cam and the second end face of the second sub-cam, and between the second end face of the third sub-cam and the second end face of the fourth sub-cam.

5. The electronic device according to claim 4, The rotating mechanism includes a first rotating shaft, a first cam sleeved on the first rotating shaft, and a first concave wheel, a second concave wheel and a first elastic element sleeved on the first rotating shaft; The first friction part of the friction member is sandwiched between the first sub-cam and the second sub-cam. The first sub-cam is in frictional contact with the first concave wheel and the first friction part is in frictional contact. The second sub-cam is in frictional contact with the second concave wheel and the second sub-cam is in frictional contact with the first friction part. The first elastic member abuts against the first concave wheel.

6. The electronic device according to claim 4, The rotating mechanism includes a second rotating shaft, a second cam sleeved on the second rotating shaft, and a third concave wheel, a fourth concave wheel, and a second elastic element sleeved on the second rotating shaft. The second friction part of the friction member is sandwiched between the third sub-cam and the fourth sub-cam. The third sub-cam is in frictional contact with the third concave wheel and also in frictional contact with the second friction part. The fourth sub-cam is in frictional contact with the fourth concave wheel and also in frictional contact with the second friction part. The second elastic member abuts against the third concave wheel.

7. The electronic device according to claim 4, The first connecting arm is connected to the first body via a first support component, and the second connecting arm is connected to the second body via a second support component; In the first device posture, the support surface of the first support component and the support surface of the second support component meet the flattening condition, and the first support component and the second support component are used to support the deformable part.

8. The electronic device according to claim 1, The rotating mechanism drives the first gear to rotate via the first tooth of the first cam and drives the second gear to rotate via the second tooth of the second cam; the first gear and the second gear are meshed together.

9. The electronic device according to claim 1, The first cam and the second cam are located inside the housing of the rotating mechanism, and the first gear and the second gear are located inside the housing of the rotating mechanism.

10. The electronic device according to claim 1, wherein the rotating mechanism comprises: case; A base is located inside the housing. Three rotating units are spaced apart on the base. The area between two adjacent rotating units serves as the area where the first body and the second body pass through the wire. The rotating unit includes the first cam, the second cam, the first gear, and the second gear.

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