A rotating shaft mechanism and electronic device

Abstract

This application provides a rotating shaft mechanism and an electronic device. The rotating shaft mechanism includes a base, a first rotating assembly, a second rotating assembly, and a damping module. The damping module includes an elastic module and an even number of friction components. Each friction component includes an intermediate shaft and a gear. The intermediate shaft includes a shaft body and a mounting portion. The shaft body is connected to the base, and the mounting portion is disposed on the shaft body. The mounting portion has a conical groove. The gear includes an insertion portion with a conical surface. The insertion portion is inserted into the conical groove. Under the elastic force of the elastic module, the conical surface abuts against the groove surface of the conical groove. The even number of friction components are located between the first rotating assembly and the second assembly. The first swing arm of the first rotating assembly and the second swing arm of the second rotating assembly rotate around the base, driving the gear to rotate around the intermediate shaft. This causes the conical surface and the groove surface of the conical groove to move relative to each other, generating friction. This friction can serve as a state-holding force for the electronic device, which is beneficial for realizing the hovering function of the electronic device in any state.

Description

Technical Field

[0001] This application relates to the field of foldable electronic device technology, and more particularly to a hinge mechanism and electronic device. Background Technology

[0002] With the gradual maturation of flexible display technology, the way electronic devices display technology has undergone tremendous changes. Foldable flexible screen mobile phones, foldable flexible screen tablets, and wearable electronic devices with foldable flexible screens are a major direction for the evolution of future smart electronic devices.

[0003] As a key component in the folding mode switching process of foldable electronic devices, the hinge mechanism's performance largely determines the folding reliability and user experience. For example, maintaining the folded, unfolded, and intermediate states of a foldable electronic device relies on the damping force provided by the damping module within the hinge mechanism. However, some current damping modules provide relatively low damping force. While they can effectively dampen the folded and unfolded states, they struggle to achieve hovering in the intermediate state, significantly impacting the user experience.

[0004] Therefore, how to achieve hovering in the intermediate state of foldable electronic devices has become a major problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] This application provides a pivot mechanism and an electronic device that enables the electronic device to hover in any rotational state, thereby improving the user experience.

[0006] In a first aspect, this application provides a rotating shaft mechanism, which may include a base, a first rotating assembly, a second rotating assembly, and a damping module. The first rotating assembly and the second rotating assembly are respectively disposed on opposite sides of the base. The damping module includes an elastic module and an even number of friction assemblies. Each friction assembly includes an intermediate shaft and a gear component. The intermediate shaft includes a shaft body and a mounting portion. The shaft body is connected to the base, and the mounting portion is disposed on the shaft body. The mounting portion has a tapered groove, the opening of which faces the gear component. The gear component is rotatably connected to the intermediate shaft. The gear component includes an insertion portion with a tapered surface, which is inserted into the tapered groove. Along the extension direction of the axis of the intermediate shaft, under the elastic force of the elastic module, the tapered surface abuts against the groove surface of the tapered groove. In addition, the gear components of the even number of friction assemblies may be located between the first rotating assembly and the second rotating assembly, and the gear surfaces of adjacent gear components mesh. The first and second rotating components serve as driving components for the rotation of gear components around the intermediate shaft. Specifically, the first rotating component includes a first swing arm rotatably connected to the base, and the second rotating component includes a second swing arm rotatably connected to the base. Furthermore, the ends of the first swing arm facing an even number of gear components are provided with a first gear surface, and the ends of the second swing arm facing an even number of gear components are provided with a second gear surface. The first gear surface meshes with the gear surface of an adjacent gear component, and the second gear surface meshes with the gear surface of an adjacent gear component. During the rotation of the first and second swing arms around the base, the gear components can be driven to rotate around the intermediate shaft. Also, due to the elastic force of the elastic module, the conical surface of the gear component abuts against the groove surface of the mounting groove. Therefore, during the rotation of the gear component around the intermediate shaft, the relative movement between the conical surface and the groove surface of the mounting groove generates friction. This frictional force can be applied to foldable electronic devices equipped with the pivot mechanism. Since the frictional force exists in any rotational state of the electronic device, it can serve as a state-holding force for the electronic device, enabling the device to hover in any rotational state, thereby improving the user experience.

[0007] In one possible implementation of this application, the wall of the conical groove may have at least two first notches. This allows the conical groove to deform under the compressive force of the insertion part during the insertion of the gear component into the conical groove, effectively increasing the contact force between the conical surface and the groove surface. Furthermore, during the rotation of the gear component relative to the intermediate shaft, this increases the frictional force generated between the conical surface and the groove surface. Additionally, the at least two first notches are arranged symmetrically along the circumference of the conical groove, ensuring uniform distribution. This improves the uniformity of force transmission in the friction assembly, thereby enhancing the stability of the electronic device using this rotating shaft mechanism.

[0008] Furthermore, the gear component's insertion portion may have at least two second notches. This allows the insertion portion to deform under the pressure of the tapered groove surface during insertion into the tapered groove, increasing the contact force between the tapered surface and the groove surface. This, in turn, increases the frictional force generated between the tapered surface and the groove surface during the gear component's rotation relative to the central shaft. Additionally, the at least two second notches are arranged centrally symmetrically along the circumference of the insertion portion, ensuring uniform distribution and improving the uniformity of force transmission in the friction assembly. This enhances the stability of the electronic device using this shaft mechanism.

[0009] In one possible implementation of this application, the base may have a receiving cavity. Additionally, the damping module includes a damping bracket, which can be housed within the receiving cavity and is fixedly connected to the base. This damping bracket serves as a positioning component for the damping module in the rotating shaft mechanism. The shaft of the intermediate shaft can be inserted into the damping bracket, which helps improve the positioning accuracy of the damping module in the rotating shaft mechanism and effectively prevents the damping module from deflecting relative to the base, thereby improving the structural reliability of the rotating shaft mechanism.

[0010] In this application, the first rotating assembly further includes a first rotating shaft, which can be inserted into the damping bracket, and the first swing arm can be rotatably connected to the first rotating shaft, so that the rotational connection between the first swing arm and the base can be achieved by the rotation of the first swing arm around the first rotating shaft. Additionally, the second rotating assembly includes a second rotating shaft, which can be inserted into the damping bracket, and the second swing arm is rotatably connected to the second rotating shaft, so that the rotational connection between the second swing arm and the base can be achieved by the rotation of the second swing arm around the second rotating shaft.

[0011] In one possible implementation of this application, the first swing arm includes a first rotating part with a first clearance opening. The second swing arm includes a second rotating part with a second clearance opening. Additionally, the damping bracket includes a first connecting part and a second connecting part. The first connecting part is inserted into the first clearance opening, and a first rotating shaft passes through both the first rotating part and the first connecting part. The second connecting part is inserted into the second clearance opening, and a second rotating shaft passes through both the second rotating part and the second connecting part. This design allows for rotational connection between the first and second swing arms and the damping bracket while also making the rotating shaft mechanism more compact, which is beneficial for miniaturizing the rotating shaft mechanism.

[0012] It is worth mentioning that when the damping module is not equipped with a damping bracket, the first and second rotating shafts can be installed on the base. For example, mounting holes can be provided on the base corresponding to the first and second rotating shafts, so that the first and second rotating shafts can pass through the corresponding mounting holes, so that the base can support and limit the first and second rotating shafts.

[0013] In one possible implementation of this application, the first swing arm further includes a first driving part, which is detachably connected to the first rotating part, and the first driving part and the first rotating part are relatively fixed along the rotation direction of the first swing arm. In this case, the first gear surface is disposed on the first rotating part, or the first gear surface is disposed on the first driving part. Since the first gear surface can mesh with the gear surface of an adjacent gear component, the gear component can be driven to rotate around the intermediate shaft by the rotation of the first swing arm.

[0014] Similarly, the second swing arm includes a second drive unit, which is detachably connected to the second rotating unit, and the second drive unit and the second rotating unit are fixed relative to each other along the rotation direction of the second swing arm. A second gear surface is disposed on the second rotating unit, or on the second drive unit. Since the second gear surface can mesh with the gear surface of an adjacent gear component, the gear component can be driven to rotate around the intermediate shaft by the rotation of the second swing arm.

[0015] In one possible implementation of this application, the damping module may further include a first integrated cam, which can be sleeved on the first and second rotating shafts. The first integrated cam is located between the elastic module and the first swing arm, and also between the elastic module and the second swing arm. Furthermore, the end of the first swing arm facing the first integrated cam has a first cam surface, and the end of the second swing arm facing the first integrated cam has a second cam surface. The end of the first integrated cam facing the first swing arm has a third cam surface, and the end of the first integrated cam facing the second swing arm has a fourth cam surface.

[0016] Along the extension direction of the first rotating shaft axis, under the elastic force of the elastic module, the first cam surface abuts against the third cam surface; along the extension direction of the second rotating shaft axis, under the elastic force of the elastic module, the second cam surface abuts against the fourth cam surface. Thus, during the rotation of the first swing arm around the first rotating shaft and the rotation of the second swing arm around the second rotating shaft, a damping force is generated by the abutting cam surfaces. The presence of this damping force enables the electronic device to self-unfold at the end of its unfolded state and self-close at the end of its closed state. Furthermore, under the action of this damping force, the user experiences a more noticeable tactile feedback when opening and closing the electronic device, thereby enhancing the user experience.

[0017] Furthermore, because the frictional force generated by the relative rotation of the conical surface and the groove surface of the conical groove in this rotating mechanism, as well as the damping force generated by the abutting cam surface, exist simultaneously, they can enhance the damping force provided by the entire rotating mechanism. This allows electronic devices using this rotating mechanism to stably hover in any rotational state. Since the two forces mentioned above are decoupled and can exist independently, the effect can be achieved through the action of the other force when one force fails. For example, when the friction component wears, the damping force generated by the abutting cam surface can also provide a certain state-holding force for the electronic device, enabling the hovering function of the electronic device in its rotational state. Also, when the abutting cam surface wears, the presence of friction can provide a more noticeable damping feel to the user during the opening and closing of the electronic device.

[0018] In one possible implementation of this application, the damping module further includes a first limiting member. The elastic module is located between the first integrated cam and the first limiting member. One end of the first limiting member can be engaged with a first rotating shaft for limiting, and the other end of the first limiting member can be engaged with a second rotating shaft for limiting. Furthermore, the elastic module abuts against the first limiting member along the extension direction of the axis of the first rotating shaft. This effectively prevents components mounted on the first and second rotating shafts from detaching from their respective shafts, thereby improving the structural reliability of the rotating shaft mechanism.

[0019] When the first limiting member is specifically engaged with the first rotating shaft and the second rotating shaft, the first rotating shaft can be provided with a first contraction part and the second rotating shaft can be provided with a second contraction part. The first limiting member can be provided with a first latch and a second latch, so that the first latch can be engaged with the first contraction part and the second latch can be engaged with the second contraction part, thereby enabling a reliable connection between the first limiting member and the first rotating shaft and the second rotating shaft.

[0020] To further enhance the damping force generated by the rotating shaft mechanism, a fifth cam surface can be provided at the end of the gear component facing the first integrated cam, and a sixth cam surface can be provided at the end of the first integrated cam facing each gear component. Furthermore, along the extension direction of the intermediate shaft axis, the fifth and sixth cams abut against each other under the elastic force of the elastic module. This increases the damping force provided by the rotating shaft mechanism by increasing the number of abutting cam surfaces.

[0021] Additionally, the damping module may include a second limiting member located between the first integrated cam and the elastic module. The second limiting member can engage with each intermediate shaft, and the first integrated cam abuts against the second limiting member. Along the extension direction of the axis of each intermediate shaft, under the abutting force of the first integrated cam and the second limiting member, the fifth cam surface abuts against the sixth cam surface. This second limiting member can limit the movement of the first integrated cam along the intermediate shaft to ensure reliable abutment between the fifth and sixth cam surfaces, thereby improving the stability of the damping force generated during the relative movement of the fifth and sixth cam surfaces.

[0022] When the second limiting member is engaged with each intermediate shaft, each intermediate shaft can be provided with a third contraction portion, which includes a shoulder. Along the extension direction of the axis of each intermediate shaft, the second limiting member can be located between the first integrated cam and the shoulder. Furthermore, when the top of the protrusion on the fifth cam surface is flush with the top of the protrusion on the sixth cam surface, the second limiting member abuts against the shoulder. The shoulder of the third contraction portion can limit the maximum distance the first limiting member can move along the intermediate axis away from the gear component, and also limit the maximum distance the first integrated cam can move away from the gear component, thus ensuring reliable contact between the fifth and sixth cam surfaces.

[0023] In one possible implementation of this application, the damping module may further include a second integrated cam, which is sleeved on the first and second rotating shafts. A first swing arm is located between the first and second integrated cams, and a second swing arm is also located between the first and second integrated cams. Furthermore, the end of the first swing arm facing the second integrated cam has a seventh cam surface, the end of the second swing arm facing the second integrated cam has an eighth cam surface, the end of the second integrated cam facing the first swing arm has a ninth cam surface, and the end of the second integrated cam facing the second swing arm has a tenth cam surface. Along the extension direction of the axis of the first rotating shaft, under the elastic force of the elastic module, the seventh cam surface abuts against the ninth cam surface. Along the extension direction of the axis of the second rotating shaft, under the elastic force of the elastic module, the eighth cam surface abuts against the tenth cam surface. Thus, by increasing the number of abutting cam surfaces, the damping force provided by the damping module is increased, providing the user with a more noticeable damping feel during the opening and closing of the electronic device.

[0024] In one possible implementation of this application, the damping module further includes a connector sleeved on the first and second rotating shafts; a first swing arm is located between the connector and the first integrated cam, and a second swing arm is located between the connector and the first integrated cam. The end of the first swing arm facing the second connector has a first plane, the end of the second swing arm facing the second connector has a second plane, the end of the second connector facing the first swing arm has a third plane, and the end of the second integrated cam facing the second swing arm has a fourth plane. Along the extension direction of the axis of the first rotating shaft, under the elastic force of the elastic module, the first plane and the third plane abut against each other. Along the extension direction of the axis of the second rotating shaft, under the elastic force of the elastic module, the second plane and the fourth plane abut against each other. During the rotation of the first and second swing arms relative to the base, the relative movement of the abutting planes also generates friction. This friction can also serve as a state-holding force for the electronic device, thereby improving the stability of the electronic device when hovering in any rotational state.

[0025] Secondly, this application also provides an electronic device, which includes a first housing, a second housing, and a rotating shaft mechanism as described in the first aspect. The first housing and the second housing are respectively disposed on opposite sides of the rotating shaft mechanism, and a first swing arm is slidably connected to the first housing, and a second swing arm is slidably connected to the second housing.

[0026] In the electronic device provided in this application, the frictional force provided by the pivot mechanism can be transmitted to the first housing through the first swing arm, and to the second housing through the second swing arm. Since this pivot mechanism can provide a large frictional force in any rotational state, it enables the electronic device to hover in any rotational state, thereby improving the user experience. Attached Figure Description

[0027] Figure 1 A schematic diagram of an electronic device in a closed state provided in an embodiment of this application;

[0028] Figure 2a A schematic diagram of an electronic device in an unfolded state provided in an embodiment of this application;

[0029] Figure 2b for Figure 2a Exploded view of the electronic device shown;

[0030] Figure 3 This is a schematic diagram of the structure of an end face cam of a damping module provided in an embodiment of this application;

[0031] Figure 4 A schematic diagram of a damping module with two end face cams in contact, provided in an embodiment of this application;

[0032] Figure 5A schematic diagram of a damping module provided in an embodiment of this application;

[0033] Figure 6a A schematic diagram of a damping module and base assembly provided in an embodiment of this application;

[0034] Figure 6b for Figure 5 Exploded view of the damping module shown;

[0035] Figure 7a A three-dimensional structural schematic diagram of an intermediate shaft provided in an embodiment of this application;

[0036] Figure 7b for Figure 7a The front view of the intermediate axis shown;

[0037] Figure 7c for Figure 7b A sectional view of a partial structure of the intermediate shaft shown;

[0038] Figure 8 A schematic diagram of a gear component provided in an embodiment of this application;

[0039] Figure 9a A schematic diagram of the assembly state of the gear component and the intermediate shaft provided in the embodiments of this application;

[0040] Figure 9b for Figure 9a Cross-sectional view of the structure shown;

[0041] Figure 10 Another structural schematic diagram of the damping module provided in the embodiments of this application;

[0042] Figure 11 for Figure 10 The exploded view of the damping module shown.

[0043] Figure label:

[0044] 1-Rotating shaft mechanism; 11-First end face cam; 1101-First inclined plane; 1102-First plane; 12-Second end face cam;

[0045] 1201 - Second inclined plane; 1202 - Second plane;

[0046] 101-First rotating assembly; 1011-First swing arm; 10111-First rotating part; 101111-First clearance opening;

[0047] 101112 - First gear surface; 101113 - First cam surface; 101114 - Seventh cam surface; 101115 - First plane;

[0048] 1012 - First rotating shaft; 10121 - First stop part; 10122 - First contraction part;

[0049] 102-Second rotating assembly; 1021-Second swing arm; 10211-Second rotating part; 102111-Second clearance opening;

[0050] 102112 - Second gear surface; 102113 - Second cam surface; 102114 - Eighth cam surface; 102115 - Second plane;

[0051] 1022 - Second rotating shaft; 10221 - Second stop part; 10222 - Second contraction part;

[0052] 103-Damping module; 1031-Friction assembly; 10311-Intermediate shaft; 103111-Shaft body; 103112-Mounting part;

[0053] 1031121 - Conical groove; 10311211 - Groove surface; 10311212 - First notch; 103113 - Third contraction section;

[0054] 1031131-Shoulder; 10312-Gear component; 103121-Interlocking part; 1031211-Conical surface; 1031212-Second notch;

[0055] 103122 - Fifth cam surface;

[0056] 1032-Damping bracket; 10321-First connecting part; 10322-Second connecting part; 1033-Elastic module;

[0057] 1034 - First integrated cam; 10341 - Third cam surface; 10342 - Fourth cam surface; 10343 - Sixth cam surface;

[0058] 10344 - Reception slot;

[0059] 1035 - Second integrated cam; 10351 - Ninth cam surface; 10352 - Tenth cam surface;

[0060] 1036 - First limiting component; 10361 - First bayonet; 10362 - Second bayonet;

[0061] 1037 - Second limiting component; 10371 - Third bayonet;

[0062] 1038-Fixed frame; 1039-Connector; 10391-Third plane; 10392-Fourth plane; 104-Base; 1041-Receiving cavity;

[0063] 2-First housing; 3-Second housing; 4-Flexible display screen. Detailed Implementation

[0064] To make the objectives, technical solutions, and advantages of this application clearer, the application will be described in further detail below with reference to the accompanying drawings. The terminology used in the following embodiments of this application is for the purpose of describing specific embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” “the,” and “this” are intended to also include expressions such as “one or more,” unless the context clearly indicates otherwise.

[0065] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0066] To facilitate understanding of the hinge mechanism and electronic device provided in the embodiments of this application, their application scenarios are first described below. The hinge mechanism can be applied to, but is not limited to, foldable electronic devices such as mobile phones, personal digital assistants (PDAs), laptops, or tablets. When applying the hinge mechanism provided in the embodiments of this application to an electronic device, please refer to... Figure 1 , Figure 1 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Figure 1 In the illustrated embodiment, the electronic device is in a closed state. Besides the pivot mechanism 1, the electronic device may also include two housings and a flexible display screen. Figure 1 (Not shown in the image). For ease of explanation, in this application, the two housings of the electronic device can be named the first housing 2 and the second housing 3, respectively. The first housing 2 and the second housing 3 are located on opposite sides of the rotating shaft mechanism 1 and can rotate around the rotating shaft mechanism 1. The electronic device provided in this application can be an inward-folding electronic device, which can be closed and unfolded according to different usage scenarios during use.

[0067] Reference Figure 2a , Figure 2a This is a schematic diagram of an electronic device in its unfolded state. Additionally, please refer to... Figure 2b , Figure 2b for Figure 2a Exploded view of electronic devices in the middle, Figure 2b The flexible display screen 4 is omitted. Therefore, it is... Figure 2a and Figure 2b As can be seen, in this unfolded state, the first housing 2 and the second housing 3 are still located on both sides of the rotating shaft mechanism 1, and the first housing 2 and the second housing 3 can support the flexible display screen 4 so that the flexible display screen 4 is in a flat state.

[0068] Understandably, this electronic device is made by Figure 2a The unfolded state shown Figure 1 The closed state shown, or by Figure 1 The closed state shown Figure 2a The unfolded state shown is the process of the first housing 2 and the second housing 3 rotating around the pivot mechanism 1. The pivot mechanism 1, as a key functional component in the foldable electronic device, is designed to correspond to the foldable portion of the flexible display screen 4; therefore, it plays a crucial role in... Figure 2a The support for the foldable portion of the flexible display screen 4 in the unfolded state, as shown, and in... Figure 1 The closed state shown plays an important role in accommodating the foldable portion of the flexible display screen 4.

[0069] Furthermore, the reliable structure of the rotating shaft mechanism 1 plays a crucial role in ensuring the reliable movement of the electronic device and maintaining its state during movement. For example, the electronic device can maintain... Figure 1 The closed state shown and Figure 2a The unfolded state shown largely depends on the damping force provided by the hinge mechanism 1. Currently, the hinge mechanism 1 of many foldable electronic devices often employs a method such as... Figure 3 The end-face cam structure shown provides the damping force. Figure 3 The diagram illustrates a possible embodiment of a first end face cam 11 and / or a second end face cam 12. When the electronic device is in a closed state and an unfolded state, it can be referred to... Figure 4 , Figure 4This is a schematic diagram of a structure in which two end-face cams are in contact, according to an embodiment of this application. In this embodiment, an effective state-holding force can be provided through the contact between the first inclined surface 1101 of the first end-face cam 11 and the second inclined surface 1201 of the second end-face cam 12. However, when the electronic device moves to an intermediate state between the closed state and the unfolded state, the first plane 1102 of the first end-face cam 11 and the second plane 1202 of the second end-face cam 12 are in contact. At this time, the damping force provided is small, and the rebound force generated by the flexible display screen, which is in a bent state at this time, will be applied to the two housings. This makes it difficult for the electronic device to hover in the intermediate state, which greatly reduces the user experience.

[0070] The hinge mechanism provided in this application aims to solve the above-mentioned problems, providing a sufficiently large hovering force for the electronic device in its closed, unfolded, and intermediate states, thereby enabling the electronic device to stably maintain the corresponding state and improve the user experience. To facilitate understanding of the hinge mechanism provided in the embodiments of this application, its specific structure will be described in detail below with reference to the accompanying drawings.

[0071] First, you can refer to Figure 2b In this application, the rotating shaft mechanism 1 may include a base 104. Additionally, see also... Figure 5 , Figure 5 This is a partial structural diagram of the rotating shaft mechanism provided in an embodiment of this application. The rotating shaft mechanism 1 may further include a first rotating component 101, a second rotating component 102, and a damping module 103. The first rotating component 101 and the second rotating component 102 are located on opposite sides of the base 104, and are rotatably connected to the base 104. In this application, the process of an electronic device using this rotating shaft mechanism 1 changing from an unfolded state to a closed state is the process of the first rotating component 101 and the second rotating component 102 rotating around the base 104 in opposite directions; while the process of the electronic device changing from a closed state to an unfolded state is the process of the first rotating component 101 and the second rotating component 102 rotating around the base 104 in opposite directions.

[0072] For reference Figure 6a and Figure 6b , Figure 6a for Figure 5 The diagram shows the assembly of the damping module 103 and the base 104 in the rotating shaft mechanism 1 shown in the figure. Figure 6b for Figure 5 The exploded view shows the rotating shaft mechanism 1. The first rotating assembly 101 may include a first swing arm 1011, the first swing arm 1011 and... Figure 6aThe base 104 shown is rotatably connected. In a specific implementation, the first rotating assembly 101 may further include a first rotating shaft 1012, which can be mounted on the base 104, and the first swing arm 1011 is rotatably connected to the first rotating shaft 1012, so that the rotation of the first swing arm 1011 relative to the base 104 is realized by the rotation of the first swing arm 1011 around the first rotating shaft 1012.

[0073] In this application, the second rotating assembly 102 may be symmetrically arranged with respect to the base 104 as the first rotating assembly 101. For example... Figure 6a and Figure 6b As shown, the second rotation assembly 102 may include a second swing arm 1021, which is rotatably connected to the base 104. Additionally, the second rotation assembly 102 may also include a second rotating shaft 1022, which can be mounted on the base 104, and the second swing arm 1021 can rotate around the second rotating shaft 1022, thereby realizing the rotation of the second swing arm 1021 relative to the base 104.

[0074] It is worth mentioning that, in this application, the axis of the first rotating shaft 1012 and the axis of the second rotating shaft 1022 can be arranged in parallel. In this way, the extending direction of the axis of the first rotating shaft 1012 is the same as the extending direction of the axis of the second rotating shaft 1022.

[0075] You can continue to refer to Figure 5 and Figure 6b In this application, the damping module 103 may include a friction assembly 1031, which may be located between the first rotating assembly 101 and the second rotating assembly 102. The friction assembly 1031 may include an intermediate shaft 10311 and a gear 10312, which may be sleeved on the intermediate shaft 10311 and rotatably connected to the intermediate shaft 10311.

[0076] When specifically setting the intermediate shaft 10311, please refer to... Figure 7a , Figure 7a This is a three-dimensional structural diagram of an intermediate shaft 10311 provided in an embodiment of this application. The intermediate shaft 10311 may include a shaft body 103111 and a mounting portion 103112. The shaft body 103111 and... Figure 2b The base 104 shown is connected, and the extension direction of the axis of the shaft 103111 can be the same as the extension direction of the axis of the first rotating shaft 1012 and the second rotating shaft 1022.

[0077] Mounting part 103112 is disposed on shaft 103111, and mounting part 103112 can be disposed circumferentially around shaft 103111. (See reference...) Figure 7b , Figure 7b for Figure 7aThe front view of the intermediate shaft 10311 shown. Also, see... Figure 7c , Figure 7c for Figure 7b The sectional view of a partial structure of the intermediate shaft 10311 shown can be used to illustrate... Figure 7b The cross-sectional structure at point A in the middle. For example... Figure 7c As shown, the mounting portion 103112 has a tapered groove 1031121, the opening of which faces the gear component 10312. (See also...) Figure 5 and Figure 7c Along the direction toward the gear component 10312, the circumferential radius of the tapered groove 1031121 gradually increases. Furthermore, the centerline of the tapered groove 1031121 coincides with the axis of the shaft 103111. This application does not specifically limit the shape of the mounting portion 103112; an exemplary example could be... Figures 7a to 7c The cylindrical shape shown can also be other possible shapes. This application does not specifically limit the angle between the groove surface 10311211 of the conical groove 1031121 and its centerline. Those skilled in the art can adjust this angle based on simulations, experiments, and other methods according to specific overall machine design requirements. In some possible embodiments, the angle between the groove surface 10311211 of the conical groove 1031121 and its centerline can be 45° or 60°.

[0078] In this application, when specifically configuring the gear component 10312, reference can be made to... Figure 8 , Figure 8 This is a schematic diagram of a gear component 10312 provided in an embodiment of this application. The gear component 10312 may include a insertion portion 103121, which has a tapered surface 1031211. See also... Figure 5 and Figure 8 Along the direction away from the mounting part 103112, the circumferential radius of the conical surface 1031211 gradually increases.

[0079] For reference Figure 9a , Figure 9a This is a schematic diagram illustrating the assembled state of the gear component 10312 and the intermediate shaft 10311 provided in an embodiment of this application. The insertion portion 103121 can be inserted into the tapered groove 1031121 of the mounting portion 103112 of the intermediate shaft 10311. Additionally, see also... Figure 9b , Figure 9b for Figure 9a A cross-sectional view of the structure shown. (From...) Figure 9bIt can be seen that the conical surface 1031211 of the insertion part 103121 abuts against the groove surface 1031121 of the conical groove 1031121 of the mounting part 103112, and in this application, the conical surface 1031211 can make frictional contact with the groove surface 10311211 of the conical groove 1031121.

[0080] In this application, frictional contact between two components refers to the generation of frictional force between their contact surfaces during relative rotation, which hinders the continued relative movement of the two components. Based on this, during the rotation of gear 10312 around intermediate shaft 10311, the conical surface 1031211 of gear 10312 can rotate relative to the groove surface 10311211 of conical groove 1031121, thereby generating frictional force between gear 10312 and intermediate shaft 10311. Since this frictional force exists throughout the entire rotation of gear 10312 around intermediate shaft 10311, when the damping module 103 is applied to the rotating shaft mechanism 1 of the electronic device, it can provide a reliable state-holding force for the electronic device to remain suspended in the corresponding state when the electronic device is in a closed state, an open state, or an intermediate state. This satisfies the user's requirements for the electronic device in different rotational states, thereby improving the user experience.

[0081] It is understandable that the greater the contact force between the conical surface 1031211 of the gear component 10312 and the groove surface 1031121 of the conical groove 1031121 of the mounting portion 103112, the greater the frictional force that can be generated during relative rotation. Based on this, the magnitude of the contact force between the conical surface 1031211 of the gear component 10312 and the groove surface 1031121 of the conical groove 1031121 of the mounting portion 103112 can be adjusted according to the required frictional force in different application scenarios. For example, when the flexible display screen of an electronic device has a large rebound force in a bent state, a larger frictional force is needed to enable the flexible display screen to hover in different folded states. In this case, the contact force between the conical surface 1031211 of the gear component 10312 and the groove surface 1031121 of the conical groove 1031121 of the mounting portion 103112 can be increased.

[0082] In this application, there are various ways to increase the contact force between the tapered surface 1031211 of the gear component 10312 and the groove surface 1031121 of the tapered groove 1031121 of the mounting portion 103112, for example, in Figure 7a In the intermediate shaft 10311 shown, the wall of the tapered groove 1031121 may have a first notch 10311212.

[0083] This application does not limit the number of first notches 10311212 of the conical groove 1031121, but they can be exemplary, including at least two, for example, two to four. Figure 7a In the intermediate shaft 10311 shown, the tapered groove 1031121 is provided with four first notches 10311212. In this application, by setting the number of first notches 10311212 in the tapered groove 1031121 to 2 to 4, the structural reliability of the mounting part 103112 can be improved while allowing the tapered groove 1031121 to undergo greater deformation. In addition, in order to improve the uniformity of force transmission of the intermediate shaft 103111, at least two first notches 10311212 can be arranged in a centrally symmetrical manner along the circumference of the tapered groove 1031121, that is, the at least two first notches 10311212 are evenly distributed along the circumference of the tapered groove 1031121. For example, when the conical groove 1031121 is provided with four first notches 10311212, the central angles between any two first notches 10311212 are equal along the circumference of the conical groove 1031121. Based on this, by increasing the size of the insertion portion 103121 of the gear component 10312, the opening of the conical groove 1031121 will undergo adaptive deformation under the squeezing force of the gear component 10312 during the process of inserting the insertion portion 103121 into the conical groove 1031121. This is beneficial to increase the contact force between the groove surface 10311211 of the conical groove 1031121 and the conical surface 1031211 of the insertion portion 103121, thereby increasing the frictional force during their relative rotation.

[0084] Additionally, in this application, the insertion portion 103121 of the gear component 10312 may also have a notch. For specific implementation, please refer to... Figure 8 For ease of distinction, the notch in the connector 103121 can be defined as the second notch 1031212. In this application, the number of second notches 1031212 in the connector 103121 is not limited; exemplaryly, there may be at least two, for example, two to four. Figure 8In the gear component 10312 shown, the insertion portion 103121 is provided with three second notches 1031212. In this application, by setting the number of second notches 1031212 in the insertion portion 103121 to 2 to 4, the structural reliability of the insertion portion 103121 can be improved while allowing the insertion portion 103121 to undergo greater deformation. Furthermore, to improve the uniformity of force transmission in the insertion portion 103121, the second notches 1031212 can be arranged in a centrally symmetrical manner along the circumference of the insertion portion 103121, that is, the at least two second notches 1031212 are evenly distributed along the circumference of the insertion portion 103121. For example, when the insertion portion 103121 is provided with three second notches 1031212, the central angles between any two second notches 1031212 are equal along the circumference of the insertion portion 103121.

[0085] It is worth mentioning that in this application, only the tapered groove 1031121 may be provided with the first notch 10311212, while the insertion part 103121 may not be provided with the second notch 1031212; or only the insertion part 103121 may be provided with the second notch 1031212, while the tapered groove 1031121 may not be provided with the first notch 10311212; or the tapered groove 1031121 may be provided with the first notch 10311212, while the insertion part 103121 may be provided with the second notch 1031212. Thus, by deforming at least one of the plug-in portion 103121 and the tapered groove 1031121, the contact force between the tapered surface 1031211 of the plug-in portion 103121 and the groove surface 10311211 of the tapered groove 1031121 is increased, thereby increasing the friction force generated during the relative rotation of the gear component 10312 and the intermediate shaft 10311.

[0086] You can continue to refer to Figure 5 and Figure 6b In this application, the damping module 103 may further include a damping bracket 1032, which serves as a positioning component for the damping module 103 within the shaft of the rotating mechanism 1. Specifically, refer to... Figure 2b The base 104 may include a receiving cavity 1041, within which the damping bracket 1032 can be accommodated, and the damping bracket 1032 is fixedly connected to the base 104. Additionally, see also... Figure 5 and Figure 7a The end of the intermediate shaft 10311 can be inserted into the damping bracket 1032, and as... Figure 7aAs shown, the cross-section of the end of the intermediate shaft 10311 used for insertion into the damping bracket 1032 can be non-circular, for example, square. This prevents the intermediate shaft 10311 from rotating relative to the damping bracket 1032 when it is inserted, thereby improving the reliability of the rotation of the gear component 10312 relative to the intermediate shaft 10311. Furthermore, by inserting the intermediate shaft 10311 into the damping bracket 1032, the damping module 103 can be effectively prevented from deflecting relative to the base 104, thereby improving the positioning accuracy of the damping module 103 in the rotating shaft mechanism 1.

[0087] Since the damping bracket 1032 is fixedly connected to the base 104, it can be understood that the rotational connection between the first swing arm 1011 and the base 104 can also be achieved through the rotational connection between the first swing arm 1011 and the damping bracket 1032. Specifically, the aforementioned first rotating shaft 1012 can be inserted through the damping bracket 1032. Additionally, as... Figure 6b As shown, the first swing arm 1011 may include a first rotating part 10111, and the first rotating part 10111 of the first swing arm 1011 may be provided with a first clearance opening 101111. In the extension direction along the axis of the first rotating shaft 1012, the first clearance opening 101111 may be, but is not limited to, located at the middle position of the first rotating part 10111. The damping bracket 1032 may include a first connecting part 10321, which can be inserted into the first clearance opening 101111. Then, the first rotating shaft 1012 can pass through both the first rotating part 10111 and the first connecting part 10321, thereby rotatably connecting the first swing arm 1011 and the damping bracket 1032. This allows for a more compact structure of the rotating shaft mechanism 1, which is beneficial for achieving a miniaturized design of the rotating shaft mechanism 1.

[0088] In this application, the second swing arm 1021 can also be rotatably connected to the damping bracket 1032. The second rotating shaft 1022 can pass through the damping bracket 1032. Furthermore, the second swing arm 1021 includes a second rotating portion 10211, which may be provided with a second clearance opening 102111. In the extending direction along the axis of the second rotating shaft 1022, the second clearance opening 102111 may, but is not limited to, be located at the middle position of the second rotating portion 10211. The damping bracket 1032 may include a second connecting part 10322, which can be inserted into the second clearance opening 102111. The second rotating shaft 1022 can be simultaneously inserted into the second rotating part 10211 and the second connecting part 10322, thereby making the second rotating part 10211 and the second connecting part 10322 rotatably connected. This allows the second swing arm 1021 to be rotatably connected to the damping bracket 1032 while also making the rotating shaft mechanism 1 have a more compact structure.

[0089] As can be seen from the above description of the structure of the friction assembly 1031, the friction force of the friction assembly 1031 is provided based on the rotation of the gear component 10312 relative to the intermediate shaft 10311. Furthermore, since the first rotating assembly 101 and the second rotating assembly 102 can rotate around the base 104, in this application, the rotation of the first rotating assembly 101 and the second rotating assembly 102 can drive the gear component 10312 to rotate around the intermediate shaft 10311.

[0090] In specific implementation, you can continue to refer to Figure 5 and Figure 6b It is understood that, in this application, in order to achieve the opposite or opposite rotation of the first rotating component 101 and the second rotating component 102, the damping module 103 may include an even number of friction components 1031, which may be exemplarily... Figure 5 The two shown can also be four, six, or eight, depending on the size of the rotating shaft mechanism 1. Furthermore, since a greater number of friction components 1031 generally provides greater frictional force to the damping module 103, the number of friction components 1031 in the damping module 103 can also be selected based on the frictional force required for the electronic device using the damping module 103 to hover at any rotation angle.

[0091] You can continue to refer to Figure 5 In the even-numbered friction components 1031, the gears 10312 of adjacent gears 10312 mesh with each other. Furthermore, the gears 10312 of the even-numbered friction components 1031 can be located between the first rotating component 101 and the second rotating component 102. Specifically, as... Figure 6bAs shown, the even number of gear components 10312 can be located between the first swing arm 1011 and the second swing arm 1021. The end of the first swing arm 1011 facing the even number of gear components 10312 can be provided with a first gear surface 101112. The first gear surface 101112 can be provided on the first rotating part 10111 of the first swing arm 1011. The rotation axes of the first gear surface 101112 and the first rotating part 10111 coincide, so the first gear surface 101112 and the first rotating part 10111 both rotate around the first rotating shaft 1012.

[0092] In other possible embodiments of this application, the first swing arm 1011 may further include a first drive unit ( Figure 5 (Not shown in the image), the first driving unit can be detachably connected to the first rotating unit 10111. Furthermore, the first driving unit and the first rotating unit 10111 are relatively fixed along the rotation direction of the first swing arm 1011, thereby allowing the first driving unit to rotate synchronously with the first rotating unit 10111 around the base 104. This application does not limit the connection method between the first driving unit and the first rotating unit 10111; for example, they can be connected by a locating pin. Based on this, the first gear surface 101112 can also be provided on the first driving unit.

[0093] In addition, a second gear surface 102112 may be provided at the end of the second swing arm 1021 facing an even number of gear components 10312. The second gear surface 102112 may be provided on the second rotating part 10211 of the second swing arm 1021. The rotation axes of the second gear surface 102112 and the second rotating part 10211 coincide, so the second gear surface 102112 and the second rotating part 10211 both rotate around the second rotating shaft 1022.

[0094] In other possible embodiments of this application, the second swing arm 1021 may further include a second drive unit ( Figure 5 (Not shown in the image), the second drive unit can be detachably connected to the second rotating unit 10211. Furthermore, the second drive unit and the second rotating unit 10211 are relatively fixed along the rotation direction of the second swing arm 1021, thereby allowing the second drive unit to rotate synchronously with the second rotating unit 10211 around the base 104. This application does not limit the connection method between the second drive unit and the second rotating unit 10211; for example, they can be connected by a locating pin. Based on this, the second gear surface 102112 can also be provided on the second drive unit.

[0095] You can continue to refer to Figure 5When the gear surfaces of two adjacent gear components 10312 mesh, the first gear surface 101112 and the second gear surface 102112 can be connected by transmission through the gear components 10312 of an even number of friction components 1031. At this time, the first gear surface 101112 can mesh with the gear surface of the adjacent gear component 10312, and the second gear surface 102112 can mesh with the gear surface of the adjacent gear component 10312. In this way, during the rotation of the first swing arm 1011 and the second swing arm 1021 around the damping bracket 1032, each gear component 10312 can be driven to rotate around its corresponding intermediate shaft 10311.

[0096] It is worth mentioning that in this application, the first swing arm 1011 and the second swing arm 1021 can serve as driving components for the gear component 10312 to rotate around the intermediate shaft 10311. Furthermore, the first swing arm 1011 and the second swing arm 1021 are connected via the gear component 10312 of the even-numbered friction components 1031. Thus, while the first swing arm 1011 and the second swing arm 1021 drive each gear component 10312 to rotate, they can also achieve synchronous rotation of the first swing arm 1011 and the second swing arm 1021 in opposite or opposing directions, thereby achieving synchronous rotation of the first rotating component 101 and the second rotating component 102 in opposite or opposing directions. Therefore, when this rotating shaft mechanism 1 is applied to electronic devices, in addition to enabling the electronic device to hover in any rotational state, it can also effectively improve the stability of the electronic device's movement, thereby improving the structural reliability of the flexible display screen and extending the service life of the flexible display screen.

[0097] In this application, to ensure that the insertion portion 103121 of the gear component 10312 is always inserted into the tapered groove 1031121 of the mounting portion 103112, and that the tapered surface 1031211 and the groove surface 10311211 of the tapered groove 1031121 are always in contact, the damping module 103 may further include an elastic module 1033. Under the elastic force of the elastic module 1033, the gear component 10312 can be pressed against the mounting portion 103112. For specific implementation details, please refer to... Figure 5 and Figure 6b The gear component 10312 is located between the mounting portion 103112 and the elastic module 1033, and in the extension direction along the axis of the intermediate shaft 10311, the elastic module 1033 presses the gear component 10312 against the mounting portion 103112, so that the tapered surface 1031211 abuts against the groove surface 10311211 of the tapered groove 1031121.

[0098] In this application, the specific type of the elastic module 1033 is not limited, but it can be exemplified as a spring, and the elastic module 1033 can include multiple springs, so that at least one spring can be fitted on each intermediate shaft 10311.

[0099] Additionally, you can continue to refer to Figure 5 and Figure 6b The damping module 103 provided in this application embodiment may further include a first integrated cam 1034, which may be located between the elastic module 1033 and the first swing arm 1011. At the same time, the first integrated cam 1034 is also located between the elastic module 1033 and the second swing arm 1021. Furthermore, the first integrated cam 1034 may be sleeved on the first rotating shaft 1012 and the second rotating shaft 1022.

[0100] like Figure 6b As shown, the end of the first rocker arm 1011 facing the first integrated cam 1034 has a first cam surface 101113, which may be provided, for example, at the end of the first connecting portion 10321. The end of the second rocker arm 1021 facing the first integrated cam 1034 has a second cam surface 102113, which may be provided, for example, at the end of the second connecting portion 10322. Additionally, the end of the first integrated cam 1034 facing the first rocker arm 1011 may have a third cam surface 10341, and the end of the first integrated cam 1034 facing the second rocker arm 1021 may have a fourth cam surface 10342. Then, along the extending direction of the axis of the first rotating shaft 1012, under the action of the elastic force of the elastic module 1033, the first cam surface 101113 may abut against the third cam surface 10341. Along the extension direction of the axis of the second rotating shaft 1022, under the action of the elastic force of the elastic module 1033, the second cam surface 102113 can abut against the fourth cam surface 10342.

[0101] In this application, along the extending direction of the axis of each corresponding shaft, the cam surface may include a protrusion and a recess, with an inclined surface present during the transition from the protrusion to the recess, or from the recess to the protrusion. (Based on the above...) Figure 4 As can be understood from the description of the two end face cams in the illustrated embodiment providing damping force when their inclined surfaces contact each other, during the rotation of the first swing arm 1011 and the second swing arm 1021 around their corresponding pivots, a corresponding damping force can be generated when the inclined surfaces of the two abutting cam surfaces contact each other. The presence of this damping force enables the electronic device to have a self-deployment function at the end of the unfolded state and a self-closing function at the end of the closed state. Furthermore, under the action of this damping force, the user can have a more noticeable tactile feedback when opening and closing the electronic device, thereby improving the user experience.

[0102] It is understood that in this application, the elastic module 1033 can also be sleeved on the first rotating shaft 1012 and the second rotating shaft 1022, thereby increasing the elastic force applied by the elastic module 1033 to the first integrated cam 1034, so that the first cam surface 101113 and the third cam surface 10341 and the second cam surface 102113 and the fourth cam surface 10342 can reliably abut against each other.

[0103] You can continue to refer to Figure 6b Each gear component 10312 may have a fifth cam surface 103122 at its end facing the first integrated cam 1034, and a sixth cam surface 10343 may be provided at its end facing each gear component 10312. Then, along the extension direction of the axis of the intermediate shaft 10311, under the elastic force of the elastic module 1033, the fifth cam surface 103122 can abut against the sixth cam surface 10343. Thus, during the rotation of the gear component 10312 around the intermediate shaft 10311 driven by the first swing arm 1011 and the second swing arm 1021, a damping force is generated between the gear component 10312 and the first integrated cam 1034. This allows the rotating shaft mechanism 1 to provide greater damping force, thereby improving the stability of electronic devices using this rotating shaft mechanism 1 in the unfolded, closed, or intermediate states. Furthermore, it can effectively improve the user's feel during the opening and closing of electronic devices, thus enhancing the user experience.

[0104] As discussed above, increasing the number of abutting cam surfaces can increase the damping force provided by the rotating shaft mechanism 1. Based on this, we can continue to refer to... Figure 5 and Figure 6bThe damping module 103 may further include a second integrated cam 1035, which is sleeved on the first rotating shaft 1012 and the second rotating shaft 1022. A first rocker arm 1011 is located between the first integrated cam 1034 and the second integrated cam 1035, and a second rocker arm 1021 is located between the first integrated cam 1034 and the second integrated cam 1035. Additionally, a seventh cam surface 101114 is provided at the end of the first rocker arm 1011 facing the second integrated cam 1035, which may, for example, be provided at the end of the first connecting portion 10321. An eighth cam surface 102114 is provided at the end of the second rocker arm 1021 facing the second integrated cam 1035, which may, for example, be provided at the end of the second connecting portion 10322. The end of the second integrated cam 1035 facing the first rocker arm 1011 has a ninth cam surface 10351, and the end of the second integrated cam 1035 facing the second rocker arm 1021 has a tenth cam surface 10352. Along the extension direction of the axis of the first rotating shaft 1012, under the elastic force of the elastic module 1033, the seventh cam surface 101114 abuts against the ninth cam surface 10351; along the extension direction of the axis of the second rotating shaft 1022, under the elastic force of the elastic module 1033, the eighth cam surface 102114 abuts against the tenth cam surface 10352, thereby enabling the rotating shaft mechanism 1 to provide greater damping force.

[0105] It is understandable that the portion of the second integrated cam 1035 with the ninth cam surface 10351 can be fitted onto the first rotating shaft 1012. Furthermore, please refer to... Figure 5 and Figure 6b The first rotating shaft 1012 may also be provided with a first stop portion 10121. The portion of the second integrated cam 1035 sleeved on the first rotating shaft 1012 may be located between the first stop portion 10121 and the first rocker arm 1011, and the second integrated cam 1035 may abut against the first stop portion 10121 along the extension direction of the axis of the first rotating shaft 1012. Similarly, the portion of the second integrated cam 1035 provided with a tenth cam surface 10352 may be sleeved on the second rotating shaft 1022. The second rotating shaft 1022 may also be provided with a second stop portion 10221. The portion of the second integrated cam 1035 sleeved on the second rotating shaft 1022 may be located between the second stop portion 10221 and the second rocker arm 1021, and the second integrated cam 1035 may abut against the second stop portion 10221 along the extension direction of the axis of the second rotating shaft 1022. The first stop 10121 and the second stop 10221 can limit the movement of the second integrated cam 1035 along the extension direction of the axis of the first rotating shaft 1012 and the second rotating shaft 1022, thereby preventing the second integrated cam 1035 from falling off the first rotating shaft 1012 and the second rotating shaft 1022, and improving the structural reliability of the rotating shaft mechanism 1.

[0106] In this application, in order for the elastic module 1033 to press together the first integrated cam 1034, the first swing arm 1011, and the second integrated cam 1035, and to press together the first integrated cam 1034, the second swing arm 1021, and the second integrated cam 1035, the damping module 103 may further include a first limiting member 1036. (See also...) Figure 5 and Figure 6b The elastic module 1033 can be located between the first integrated cam 1034 and the first limiting member 1036. One end of the first limiting member 1036 can be locked with the first rotating shaft 1012, and the other end of the first limiting member 1036 can be locked with the second rotating shaft 1022. In addition, along the extension direction of the axis of the first rotating shaft 1012, the elastic module 1033 and the first limiting member 1036 can abut against each other, thereby preventing the structures provided on the first rotating shaft 1012 and the second rotating shaft 1022 from falling off the corresponding rotating shafts, thus improving the structural reliability of the damping module 103.

[0107] You can continue to refer to Figure 6b To achieve the limiting engagement between the first limiting member 1036 and the first rotating shaft 1012, a first contraction portion 10122 can be provided on the first rotating shaft 1012. One end of the first limiting member 1036 can be provided with a first latch 10361, which engages with the first contraction portion 10122. Similarly, the second rotating shaft 1022 can be provided with a second contraction portion 10222, and the other end of the first limiting member 1036 can be provided with a second latch 10362, which engages with the second contraction portion 10222. In this application, the contraction portion refers to the part of the shaft whose diameter decreases.

[0108] In addition, due to the fact that in such Figure 5 and Figure 6bIn the damping module 103 shown, cam surfaces are provided at both ends of the first rocker arm 1011 along the extension direction of the axis of the first rotating shaft 1012, and cam surfaces are provided at both ends of the second rocker arm 1021 along the extension direction of the axis of the second rotating shaft 1022. The gear component 10312 only has a cam surface at the end facing the first integrated cam 1034. Therefore, to improve the contact reliability between the fifth cam surface 103122 of the gear component 10312 and the sixth cam surface 10343 of the first integrated cam 1034, the damping module 103 may further include a second limiting member 1037. The second limiting member 1037 is located between the first integrated cam 1034 and the elastic module 1033. The second limiting member 1037 is engaged with each intermediate shaft 10311, and the first integrated cam 1034 abuts against the second limiting member 1037, thereby limiting the axial displacement of the first integrated cam 1034 along the intermediate shaft 10311. Under the action of the abutting force between the first integrated cam 1034 and the second limiting member 1037, the fifth cam surface 103122 abuts against the sixth cam surface 10343 in the extension direction along the axis of each intermediate shaft 10311.

[0109] You can continue to refer to Figure 6b In order to achieve the limiting engagement between the second limiting member 1037 and each intermediate shaft 10311, the second limiting member 1037 may be provided with a third bayonet 10371, and the shaft body 103111 of each intermediate shaft 10311 may be provided with as follows Figure 7a The third contraction portion 103113 is shown. The third latch 10371 can be engaged in the third contraction portion 103113. Furthermore, it can be understood that the second limiting member 1037 can move within the third contraction portion 103113 along the extending direction of the axis of the intermediate shaft 10311, so that during the rotation of the gear member 10312 around the intermediate shaft 10311, the first integrated cam 1034 can move along the extending direction of the axis of the intermediate shaft 10311.

[0110] You can continue to refer to Figure 7a In the specific configuration of the third contraction section 103113, the third contraction section 103113 includes a shoulder 1031131. See also... Figure 6b and Figure 7aAlong the extension direction of the axis of each intermediate shaft 10311, the second limiting member 1037 is located between the first integrated cam 1034 and the shoulder 1031131. And when the top of the protrusion of the fifth cam surface 103122 of the gear member 10312 is flush with the top of the protrusion of the sixth cam surface 10343 of the first integrated cam 1034, the second limiting member 1037 abuts against the shoulder 1031131. Based on this, the maximum distance that the second limiting member 1037 can move relative to the gear member 10312 in the third contraction section 103113 can be limited. Since the first integrated cam 1034 is always in contact with the second limiting member 1037, the structure of the third contraction section 103113 can also limit the relative position of the first integrated cam 1034 and the gear member 10312, thereby improving the reliability of the contact between the cam surfaces of the first integrated cam 1034 and the gear member 10312, and improving the reliability of the insertion part 103121 of the gear member 10312 and the tapered groove 1031121 of the mounting part 103112.

[0111] It is worth mentioning that the contact between the first integrated cam 1034 and the second limiting member 1037 mentioned above in this application is achieved in the following two ways: When the second limiting member 1037 moves in the third contraction portion 103113 along the extension direction of the axis of the intermediate shaft 10311, the first integrated cam 1034 and the second limiting member 1037 can abut against each other under the elastic force of the elastic module 1033. Additionally, when the second limiting member 1037 abuts against the shoulder 1031131, the first integrated cam 1034 and the second limiting member 1037 can abut against each other under the elastic force of the elastic module 1033 and the contact force between the second limiting member 1037 and the shoulder 1031131. In any case, the first integrated cam 1034 and the second limiting member 1037 are always in contact, and under the contact force of the first integrated cam 1034 and the second limiting member 1037, the fifth cam surface 103122 and the sixth cam surface 10343 are always in contact.

[0112] In addition, such as Figure 5 and Figure 6b As shown, a receiving groove 10344 can also be provided on the side of the first integrated cam 1034 facing the second limiting member 1037, so that at least a part of the second limiting member 1037 can be received in the receiving groove 10344. This makes the arrangement of the first integrated cam 1034 and the second limiting member 1037 more compact, and can effectively reduce the dimension of the first integrated cam 1034 in the extension direction along the axis of the intermediate shaft 10311, thereby helping to reduce the volume of the rotating shaft mechanism 1 and realize the miniaturization design of the rotating shaft mechanism 1.

[0113] You can continue to refer to Figure 5 and Figure 6b In this embodiment, the rotating shaft mechanism 1 may further include a fixing frame 1038, which may be located between the elastic module 1033 and the first limiting member 1036, and the elastic module 1033 presses the fixing frame 1038 against the first limiting member 1036. Furthermore, the first rotating shaft 1012, the second rotating shaft 1022, and each intermediate shaft 10311 may all pass through the fixing frame 1038, thereby enabling the fixing frame 1038 to support the first rotating shaft 1012, the second rotating shaft 1022, and each intermediate shaft 10311, thus improving the structural stability of the rotating shaft mechanism 1.

[0114] Reference Figure 10 , Figure 10 This is a schematic diagram of another structure of the rotating shaft mechanism 1 provided in an embodiment of this application. Similar to the above... Figure 5 and Figure 6b The rotating shaft mechanism 1 shown is different from the one shown. Figure 10 The damping module 103 replaces the second integrated cam 1035 with a connector 1039. Specifically, the first swing arm 1011 is located between the connector 1039 and the first integrated cam 1034, and the second swing arm 1021 is located between the connector 1039 and the first integrated cam 1034. One end of the connector 1039 is sleeved on the first rotating shaft 1012, and the other end of the connector 1039 is sleeved on the second rotating shaft 1022. The connector 1039 can be used to support the first rotating shaft 1012 and the second rotating shaft 1022.

[0115] Additionally, you can refer to Figure 11 , Figure 11 for Figure 10The exploded view shows the rotating shaft mechanism 1. A first plane 101115 is provided at the end of the first swing arm 1011 facing the connector 1039. This first plane 101115 can be, for example, provided at the end of the first rotating part 10111. A second plane 102115 is provided at the end of the second swing arm 1021 facing the connector 1039. This second plane 102115 can be, for example, provided at the end of the second rotating part 10211. A third plane 10391 is provided at the end of the connector 1039 facing the first swing arm 1011, and a fourth plane 10392 is provided at the end of the connector 1039 facing the second swing arm 1021. The first plane 101115 abuts against the third plane 10391, and the second plane 102115 abuts against the fourth plane 10392. In this way, during the rotation of the first swing arm 1011 and the second swing arm 1021 relative to the damping bracket 1032, the frictional force generated by the relative rotation of the abutting planes between the first swing arm 1011 and the connecting member 1039, and between the second swing arm 1021 and the connecting member 1039, can also be output as a state-holding force, which is beneficial to improving the stability of electronic devices with this rotating shaft mechanism when hovering in any rotation state.

[0116] In this embodiment, since the first rocker arm 1011, the second rocker arm 1021, and the gear component 10312 are all provided with only cam surfaces that abut against the first integrated cam 1034, the first integrated cam 1034 can maintain stable contact with the first rocker arm 1011, the second rocker arm 1021, and the gear component 10312 under the elastic force of the elastic component. Therefore, the damping module 103 does not need to be provided with... Figure 6b The second limiting member 1037 shown is not provided, and the intermediate shaft 10311 does not have a third contraction portion 103113. Of course, to improve the reliability of the contact between the first integrated cam 1034 and the first rocker arm 1011, the second rocker arm 1021, and the gear 10312, the second limiting member 1037 can also be retained. Furthermore, Figure 10 and Figure 11 Other structures of the rotating shaft mechanism 1 shown can be referred to. Figure 5 and Figure 6b The rotating shaft mechanism 1 shown is configured as described here, and will not be elaborated upon further.

[0117] In this application, other possible structures of the rotating shaft mechanism can be obtained by modifying the structure described above. All of these should be understood to fall within the protection scope of this application, and will not be described in detail here. For example, in... Figure 5 and Figure 6bBased on the rotating shaft mechanism 1 shown, along the extension direction of the axis of the first rotating shaft 1012 and the axis of the second rotating shaft 1022, the friction assembly 1031, the first integrated cam 1034, the elastic module 1033 and the second limiting member 1037 can be symmetrically arranged. At this time, the damping bracket 1032 can be omitted. In addition, the two symmetrically arranged friction assemblies 1031 can share the intermediate shaft 10311. Each intermediate shaft 10311 can be provided with two mounting parts 103112 for mounting the gear assemblies 10312, thereby making the structure of the rotating shaft mechanism 1 relatively simple.

[0118] As described above in the embodiment of this application, during the rotation of the gear 10312 around the intermediate shaft 10311, the relative movement between the tapered surface 1031211 of the insertion part 103121 and the groove surface 10311211 of the tapered groove 1031121 of the mounting part 103112 generates friction. This friction can be used as a holding force for the electronic device to remain suspended at any rotation angle. The damping force provided by the shaft mechanism 1 is generated by the abutting cam surfaces. Therefore, the structure that generates friction and the structure that generates damping are relatively independent, which can help improve the structural reliability of the shaft mechanism 1 and extend its wear life. Furthermore, since frictional force generated by the rotation of gear 10312 around intermediate shaft 10311 exists throughout the entire process of the first swing arm 1011 and the second swing arm 1021 rotating around the corresponding pivot, it can provide the electronic device with sufficient state-holding force to stably maintain it in the unfolded state, closed state, and intermediate state, thereby enabling the electronic device to hover in any state and improve the user experience.

[0119] Furthermore, in the damping module 103 provided in this application, since the frictional force generated by the rotation of the gear component 10312 around the intermediate shaft 10311 and the damping force generated by the abutting cam surface exist simultaneously, it can help improve the damping force provided by the entire damping module 103, thereby enabling the electronic device using the damping module 103 to stably hover in the corresponding rotational state. Also, since the above two forces are decoupled and can exist independently, when one force fails, the effect can be achieved through the action of the other force. For example, when the friction component 1031 wears, the damping force generated by the abutting cam surface can also provide a certain state-holding force for the electronic device, thereby achieving the hovering function of the electronic device in its rotational state. Furthermore, when the abutting cam surface wears, the presence of friction can also provide the user with a more noticeable damping feel during the opening and closing of the electronic device.

[0120] The rotating shaft mechanism 1 provided in the above embodiments of this application can be applied to, for example... Figure 1 and Figure 2aIn the illustrated electronic device, the rotating shaft mechanism 1 may further include a first housing fixing frame and a second housing fixing frame. The first housing fixing frame and the first rotating component 101 are located on the same side of the base 104, and the second housing fixing frame and the second rotating component 102 are located on the same side of the base 104. The first swing arm 1011 is slidably connected to the first housing fixing frame, and the second swing arm 1021 is slidably connected to the second housing fixing frame. There are various ways to achieve the slidable connection between the first swing arm 1011 and the second swing arm 1021 and the corresponding housing fixing frame. For example, sliders can be provided on the first swing arm 1011 and the second swing arm 1021, and grooves can be provided on the corresponding housing fixing frames. The corresponding swing arm can be slidably connected to the housing fixing frame by sliding the slider along the groove. To improve the reliability of the connection between the swing arm and the corresponding housing fixing frame, the slider can be locked in the groove to prevent it from falling off during the sliding process.

[0121] Furthermore, when the aforementioned pivot mechanism 1 is applied to an electronic device, the first housing mounting bracket can be fixedly connected to the first housing 2, and the second housing mounting bracket can be fixedly connected to the second housing 3. As can be seen from the above description of the pivot mechanism 1 provided in this application, the damping module 103 in the pivot mechanism 1 can provide a large frictional force. This frictional force can be transmitted to the corresponding housing through the first rotating assembly 101 and the second rotating assembly 102, thereby enabling the electronic device to be stably maintained... Figure 2a The unfolded state shown, or Figure 1 The closed state shown, or the intermediate state between the open and closed states, enhances the user experience. Furthermore, the damping force generated by the abutting cam surfaces in the rotating shaft mechanism 1 enables the electronic device to self-open at the end of the open state and self-close at the end of the closed state. This damping force also provides a noticeable tactile feedback when opening and closing the electronic device, further improving the user experience.

[0122] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A rotating shaft mechanism, characterized in that, It includes a base, a first rotating assembly, a second rotating assembly, and a damping module. The first rotating assembly and the second rotating assembly are respectively disposed on opposite sides of the base, wherein: The damping module includes an elastic module and an even number of friction components. Each friction component includes an intermediate shaft and a gear. The intermediate shaft includes a shaft body and a mounting portion. The shaft body is connected to the base, and the mounting portion is disposed on the shaft body. The mounting portion has a tapered groove, the opening of which faces the gear. The gear is rotatably connected to the intermediate shaft and includes an insertion portion with a tapered surface. The insertion portion is inserted into the tapered groove and, along the extension direction of the axis of the intermediate shaft, under the elastic force of the elastic module, the tapered surface abuts against the groove surface of the tapered groove. The gears of the even number of friction components are located between the first rotating component and the second rotating component, and the gear surfaces of adjacent gears mesh. The first rotating assembly includes a first swing arm, which is rotatably connected to the base; the second rotating assembly includes a second swing arm, which is rotatably connected to the base; the first swing arm has a first gear surface at its end facing an even number of the gear components, and the second swing arm has a second gear surface at its end facing an even number of the gear components; the first gear surface meshes with the gear surface of an adjacent gear component, and the second gear surface meshes with the gear surface of an adjacent gear component.

2. The rotating shaft mechanism as described in claim 1, characterized in that, The conical groove has at least two first notches on its wall, and the at least two first notches are arranged in a centrally symmetrical manner along the circumference of the conical groove.

3. The rotating shaft mechanism as described in claim 1 or 2, characterized in that, The plug portion has at least two second notches, and the at least two second notches are arranged in a centrally symmetrical manner along the circumference of the plug portion.

4. The rotating shaft mechanism as described in any one of claims 1 to 3, characterized in that, The base has a receiving cavity, and the damping module further includes a damping bracket. The damping module is received in the receiving cavity, and the damping bracket is fixedly connected to the base; the shaft is inserted into the damping bracket.

5. The rotating shaft mechanism as described in claim 4, characterized in that, The first rotating assembly further includes a first rotating shaft, which passes through the damping bracket, and the first swing arm is rotatably connected to the first rotating shaft; the second rotating assembly further includes a second rotating shaft, which passes through the damping bracket, and the second swing arm is rotatably connected to the second rotating shaft.

6. The rotating shaft mechanism as described in claim 5, characterized in that, The damping module further includes a first integrated cam, which is sleeved on the first rotating shaft and the second rotating shaft. The first integrated cam is located between the elastic module and the first swing arm, and the first integrated cam is located between the elastic module and the second swing arm. The first swing arm has a first cam surface at its end facing the first integrated cam, and the second swing arm has a second cam surface at its end facing the first integrated cam; the first integrated cam has a third cam surface at its end facing the first swing arm, and the first integrated cam has a fourth cam surface at its end facing the second swing arm; along the extension direction of the axis of the first rotating shaft, under the action of the elastic force of the elastic module, the first cam surface abuts against the third cam surface; along the extension direction of the axis of the second rotating shaft, under the action of the elastic force of the elastic module, the second cam surface abuts against the fourth cam surface.

7. The rotating shaft mechanism as described in claim 6, characterized in that, The damping module further includes a first limiting member. The elastic module is located between the first integrated cam and the first limiting member. One end of the first limiting member is engaged with the first rotating shaft, and the other end of the first limiting member is engaged with the second rotating shaft. The elastic module abuts against the first limiting member along the extension direction of the axis of the first rotating shaft.

8. The rotating shaft mechanism as described in claim 7, characterized in that, The first rotating shaft is provided with a first contraction portion, and the second rotating shaft is provided with a second contraction portion; the first limiting member is provided with a first latch and a second latch, the first latch being engaged with the first contraction portion, and the second latch being engaged with the second contraction portion.

9. The rotating shaft mechanism according to any one of claims 6 to 8, characterized in that, Each gear component has a fifth cam surface at its end facing the first integrated cam, and the first integrated cam has a sixth cam surface at its end facing each gear component. Along the extension direction of the axis of the intermediate shaft, the fifth cam surface and the sixth cam surface abut against each other under the elastic force of the elastic module.

10. The rotating shaft mechanism as described in claim 9, characterized in that, The damping module further includes a second limiting member, which is located between the first integrated cam and the elastic module. The second limiting member is engaged with each of the intermediate shafts, and the first integrated cam abuts against the second limiting member. Along the extension direction of the axis of each intermediate shaft, under the action of the abutting force between the first integrated cam and the second limiting member, the fifth cam surface abuts against the sixth cam surface.

11. The rotating shaft mechanism as described in claim 10, characterized in that, Each of the intermediate shafts has a third contraction portion, the third contraction portion including a shoulder, and the second limiting member is located between the first integrated cam and the shoulder along the extension direction of the axis of each intermediate shaft. When the top of the protrusion on the fifth cam surface is flush with the top of the protrusion on the sixth cam surface, the second limiting member abuts against the shoulder.

12. The rotating shaft mechanism according to any one of claims 6 to 11, characterized in that, The damping module further includes a second integrated cam, which is sleeved on the first rotating shaft and the second rotating shaft; the first swing arm is located between the first integrated cam and the second integrated cam, the second swing arm is located between the first integrated cam and the second integrated cam, the end of the first swing arm facing the second integrated cam is provided with a seventh cam surface, the end of the second swing arm facing the second integrated cam is provided with an eighth cam surface, the end of the second integrated cam facing the first swing arm is provided with a ninth cam surface, and the end of the second integrated cam facing the second swing arm is provided with a tenth cam surface; Along the extension direction of the axis of the first rotating shaft, under the action of the elastic force of the elastic module, the seventh cam surface abuts against the ninth cam surface; along the extension direction of the axis of the second rotating shaft, under the action of the elastic force of the elastic module, the eighth cam surface abuts against the tenth cam surface.

13. The rotating shaft mechanism according to any one of claims 6 to 11, characterized in that, The damping module further includes a connector sleeved on the first rotating shaft and the second rotating shaft; the first swing arm is located between the connector and the first integrated cam, the second swing arm is located between the connector and the first integrated cam, the end of the first swing arm facing the connector has a first plane, the end of the second swing arm facing the connector has a second plane, the end of the connector facing the first swing arm has a third plane, and the end of the connector facing the second swing arm has a fourth plane. Along the extension direction of the axis of the first rotating shaft, under the action of the elastic force of the elastic module, the first plane abuts against the third plane; along the extension direction of the axis of the second rotating shaft, under the action of the elastic force of the elastic module, the second plane abuts against the fourth plane.

14. The rotating shaft mechanism according to any one of claims 5 to 13, characterized in that, The first swing arm includes a first rotating part, and the first rotating part is provided with a first clearance opening; the second swing arm includes a second rotating part, and the second rotating part is provided with a second clearance opening; The damping bracket includes a first connecting part and a second connecting part. The first connecting part is inserted into the first clearance opening, and the first rotating shaft passes through both the first rotating part and the first connecting part. The second connecting part is inserted into the second clearance opening, and the second rotating shaft passes through both the second rotating part and the second connecting part.

15. The rotating shaft mechanism as described in claim 14, characterized in that, The first swing arm further includes a first driving part, which is detachably connected to the first rotating part, and the first driving part and the first rotating part are fixed relative to each other along the rotation direction of the first swing arm; the first gear surface is disposed on the first rotating part, or the first gear surface is disposed on the first driving part; The second swing arm includes a second driving part, which is detachably connected to the second rotating part, and the second driving part and the second rotating part are fixed relative to each other along the rotation direction of the second swing arm; the second gear surface is disposed on the second rotating part, or the second gear surface is disposed on the second driving part.

16. An electronic device, characterized in that, It includes a first housing, a second housing, and a rotating shaft mechanism as described in any one of claims 1 to 15, wherein: the first housing and the second housing are respectively disposed on opposite sides of the rotating shaft mechanism, the first swing arm is slidably connected to the first housing, and the second swing arm is slidably connected to the second housing.

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