Rotating shaft mechanism and electronic device

Abstract

The present application provides a rotating shaft mechanism and an electronic device. The rotating shaft mechanism (1) includes a main shaft module (101), and the main shaft module (101) includes a base (1013), a first support plate (1011), a second support plate (1012), a first gear linkage (1014), a second gear linkage (1015), an elastic mechanical part (1022), and a coupling cam (1021). The first support plate (1011) and the second support plate (1012) are rotatably coupled to the base (1013). The first gear linkage (1014) and the second gear linkage (1015) are rotatably coupled to an end of the base (1013), and the first gear linkage (1014) and the second gear linkage (1015) are coupled by transmission using gears that engage with each other. Also, one end of the first gear linkage (1014) remote from the second gear linkage (1015) is slidably coupled to the first support plate (1011). One end of the second gear linkage (1015) remote from the first gear linkage (1014) is slidably coupled to the second support plate (1012). The first gear linkage (1014) and the second gear linkage (1015) may be provided with cam structures respectively, and the elastic mechanical part (1022) can press the cam structures of the two gear linkages against the coupling cam (1021). According to the solution of the present application, the first support plate and the second support plate can rotate synchronously, so that the risk of damage to the flexible display can be reduced.

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to Chinese Patent Application No. 202111269091.5, entitled "Rotating Shaft Mechanism and Electronic Device," filed with the State Intellectual Property Office of China on October 29, 2021, which is incorporated herein by reference in its entirety.

[0002] The present application relates to the field of electronic device technology, and more particularly to rotating shaft mechanisms and electronic devices. [Background technology]

[0003] As flexible display technology becomes more and more mature, the display configuration of electronic devices is undergoing major changes. Mobile phones with foldable flexible displays, tablets with foldable flexible displays, and wearable electronic devices with foldable flexible displays are one of the important development directions for smart electronic devices in the future.

[0004] A flexible display is a key component in a foldable electronic device, characterized by continuous folding. Generally, in the folding process of a foldable electronic device, it is necessary to ensure that all parts of the flexible display receive a relatively uniform force during the folding process of the electronic device, in order to prevent the flexible display from being pulled or compressed. Summary of the Invention

[0005] Therefore, how to reduce the risk of damage to the flexible display by preventing the flexible display from being pulled or compressed during the folding process of the foldable electronic device has become an issue that needs to be urgently addressed by those skilled in the art. [Means for solving the problem]

[0006] The present application provides a pivot mechanism and an electronic device for reducing the risk of damage to a flexible display, extending the life of the flexible display, and increasing the reliability of the electronic device.

[0007] According to a first aspect, the present application provides a rotary shaft mechanism. The rotary shaft mechanism may include a main shaft module. The main shaft module may include a base, which may be used as a support structure for the entire main shaft module. The main shaft module may further include a first support plate, a second support plate, a first gear linkage, and a second gear linkage. The first support plate and the second support plate are disposed on opposite sides of the base, and both the first support plate and the second support plate are rotatably coupled to the base. The first gear linkage and the second gear linkage are rotatably coupled to ends of the base, and the first gear linkage and the first support plate are disposed on the same side of the base, and the second gear linkage and the second support plate are disposed on the same side of the base. The first gear linkage may have a first gear and a first cam structure arranged coaxially at one end facing the second gear linkage, and the second gear linkage may have a second gear arranged coaxially at one end facing the first gear linkage. The first gear and the second gear may be engaged to achieve a power transmission connection between the first gear and the second gear. The first support plate may also have a first track groove, and the first gear linkage may have a first guide component. The first guide component may be inserted into the first track groove and slide along the first track groove. Similarly, the second support plate may have a second track groove, and the second gear linkage may have a second guide component. The second guide component may be inserted into the second track groove and slide along the second track groove.

[0008] In the present application, the spindle module may further include a coupling cam. The coupling cam may be provided with a second cam structure and a fourth cam structure. The third cam structure may be positioned opposite the first cam structure, and the fourth cam structure may be positioned opposite the second cam structure. Elastic mechanical components may also be positioned on the first cam structure and the second cam structure away from the coupling cam. The elastic force accumulated by the elastic mechanical components can press the first cam structure and the second cam structure against the coupling cam, causing the first cam structure to closely contact the third cam structure and the second cam structure to closely contact the fourth cam structure. In this way, as the first gear linkage and the second gear linkage rotate relative to the base, the first cam structure and the third cam structure, as well as the second cam structure and the fourth cam structure, can engage with each other, generating corresponding damping forces at different rotation positions. This provides a distinct rotational sensation to the user and improves the user experience. In addition, the damping forces generated at different rotational positions can further enable the first gear linkage and the second gear linkage to stop moving without an external force, so that the first support plate and the second support plate are stopped at corresponding different rotational positions. When applied to electronic devices, this can meet the user's personal usage requirements.

[0009] According to the rotary shaft mechanism provided in the present application, when the first support plate rotates relative to the base, the first guide member can slide along the first track groove, driving the first gear linkage to rotate around the base. The first gear linkage and the second gear linkage are coupled by transmission using a first gear and a second gear, so that the second gear linkage can rotate synchronously with the first gear linkage. In this case, the second guide member can slide along the second track groove, driving the second support plate to rotate relative to the base. In this way, the first support plate and the second support plate can rotate synchronously. When the rotary shaft mechanism is applied to an electronic device, the first support plate may be fixed to one housing of the electronic device, and the second support plate may be fixed to the other housing of the electronic device. In this case, the first support plate and the second support plate rotate synchronously, so that the two housings of the electronic device can rotate synchronously. In this way, the force on each part of the flexible display fixed to the two housings can be made relatively uniform, and the flexible display can be prevented from being pulled or compressed, thereby reducing the risk of damage to the flexible display and improving the structural reliability of the flexible display.

[0010] In a possible embodiment of the present application, the main shaft module may further include a first gear shaft and a second gear shaft. The first gear shaft simultaneously passes through the first gear, the first cam structure, and the third cam structure. The first gear linkage may be rotatably coupled to the first gear shaft. Similarly, the second gear shaft simultaneously passes through the second gear, the second cam structure, and the fourth cam structure. The second gear linkage may be rotatably coupled to the second gear shaft. The first gear linkage and the second gear linkage can rotate around the corresponding gear shafts, thereby improving the rotational reliability of the first gear linkage and the second gear linkage. This improves the movement stability of the entire main shaft module.

[0011] The main shaft module may further include a coupling fastener. An end of the first gear shaft remote from the first gear linkage may be threadedly coupled to the coupling fastener. An end of the second gear shaft remote from the second gear linkage may be threadedly coupled to the coupling fastener. In this case, an elastic mechanical part may be disposed between the coupling fastener and the first gear and the second gear, and the elastic mechanical part may be in elastic contact with the coupling fastener, the first gear, and the second gear, such that the elastic mechanical part can press the first cam structure and the second cam structure against the coupling cam.

[0012] It will be understood that the tightness of the fit between the first cam structure and the third cam structure, and between the second cam structure and the fourth cam structure, has a significant effect on the damping force generated between the mating cam structures. The tightness of the fit may be adjusted using the pressing force of an elastic mechanical component that presses the first cam structure and the second cam structure against the coupling cam. An end of the second gear shaft remote from the second gear interlocking portion may be threadedly coupled to the coupling fastener, and an end of the second gear shaft remote from the second gear interlocking portion may be threadedly coupled to the coupling fastener. Thus, the degree of fastening between the first gear shaft and the coupling fastener, and between the second gear shaft and the coupling fastener, may be adjusted, thereby adjusting the deformation of the elastic mechanical component. In this way, the pressing force of the elastic mechanical component that presses the first cam structure and the second cam structure against the coupling cam is adjusted.

[0013] In the present application, when a resilient mechanical component is specifically arranged, the resilient mechanical component may be, but is not limited to, a spring. There may be a plurality of resilient mechanical components. At least one resilient mechanical component may be sleeved on a first gear shaft, and a resilient acting force generated by the at least one resilient mechanical component may be applied to the first gear. At least one resilient mechanical component may be sleeved on a second gear shaft, and a resilient acting force generated by the at least one resilient mechanical component may be applied to the second gear.

[0014] The coupling fastener, the elastic mechanical part, the first gear shaft, the second gear shaft, and other structures may be attached to the base. In a possible embodiment of the present application, an accommodation groove may be further provided in the base. The coupling fastener, the elastic mechanical part, the first gear shaft, the second gear shaft, and other structures may then be accommodated in the accommodation groove. The coupling fastener can also abut against the groove wall of the accommodation groove, so that the coupling fastener is firmly coupled to the base.

[0015] To achieve a rotational coupling between the first support plate and the base, and between the second support plate and the base, in a possible embodiment of the present application, a first sliding groove and a second sliding groove are provided in the base. A first sliding arm is provided on the side of the first support plate facing the base, and a second sliding arm is provided on the side of the second support plate facing the base. The first sliding arm may be housed in the first sliding groove and be slidable along the first sliding groove in a direction toward or away from the second support plate. The second sliding arm may be housed in the second sliding groove and be slidable along the second sliding groove in a direction toward or away from the second support plate. In this way, both the first support plate and the second support plate can achieve a rotational coupling using a virtual axis along which the sliding arm and the sliding groove are engaged with each other. This allows for a relatively compact spindle module structure that facilitates miniaturization of the spindle module design, resulting in a relatively small space occupied by the spindle module within the rotary shaft mechanism, allowing more functional modules to be arranged within the rotary shaft mechanism.

[0016] In addition, when the first sliding groove and the second sliding groove are specifically arranged, the first sliding groove and the second sliding groove may be arranged alternately in the direction of the first support plate and the second support plate, so that the structure of the spindle module is more compact. In some other embodiments of the present application, the first sliding groove and the second sliding groove may alternatively be arranged opposite to each other.

[0017] In a possible embodiment of the present application, the main shaft module may further include a driven gear, and there may be an even number of driven gears, and the even number of driven gears may be disposed between the first gear and the second gear, so that the first gear and the second gear are coupled by transmission using the even number of driven gears, thereby improving the transmission stability of the first gear and the second gear, and improving the motion stability of the main shaft module.

[0018] The main shaft module may further include an intermediate gear shaft. The driven gear may be sleeved on the intermediate gear shaft, and the driven gear may be rotatably coupled to the intermediate gear shaft, thereby increasing the rotational reliability of the driven gear.

[0019] In the present application, the base may further include a gear box, and each driven gear may be mounted in the gear box. The gear box can store lubricant to be applied to the driven gears in order to reduce wear on the contact surfaces of the driven gears coupled by the transmission.

[0020] The base may further include a first mounting hole and a second mounting hole, and the opening direction of the first mounting hole and the second mounting hole may be the same as the extension direction of the rotary shaft mechanism. The first gear of the first gear interlocking unit may be mounted in the first mounting hole, and the second gear of the second gear interlocking unit may be mounted in the second mounting hole. The first gear and the second gear may be coupled by transmission using a driven gear. In this application, the first mounting hole and the second mounting hole may be connected to a gear box. In this way, lubricant stored in the gear box can be used to lubricate the first gear and the second gear to help reduce wear on the contact surfaces between the driven gear and the first gear and between the driven gear and the second gear. This improves the structural reliability of each gear.

[0021] In the present application, the rotary shaft mechanism may include multiple spindle modules, and the multiple spindle modules may be specifically arranged based on the extension length of the rotary shaft mechanism. Furthermore, when the rotary shaft mechanism includes multiple spindle modules, the multiple spindle modules may be arranged at intervals. To reduce the gap between the spindle modules, the rotary shaft mechanism may further include a cover plate, and the cover plate may be arranged between two adjacent spindle modules. The cover plate may include a first sub-cover plate and a second sub-cover plate, and the first sub-cover plate and the second sub-cover plate may be rotatably coupled to the base. The first sub-cover plate and the first support plate may be arranged on the same side of the base, and the first sub-cover plate is fixed to the first support plate. The second sub-cover plate and the second support plate may be arranged on the same side of the base, and the second sub-cover plate is fixed to the second support plate. In this way, the first sub-cover plate and the first support plate are coupled to form a flat, continuous support surface, and the second sub-cover plate and the second support plate are coupled to form a flat, continuous support surface, so that when the rotating shaft mechanism is applied to an electronic device, the flexible display of the electronic device can be stably supported.

[0022] According to a second aspect, the present application further provides an electronic device. The electronic device includes a first housing, a second housing, a flexible display, and the pivot mechanism of the first aspect. The first housing and the second housing are respectively disposed on either side of the pivot mechanism, and a first support plate is fixed to the first housing, and a second support plate is fixed to the second housing. The flexible display continuously covers the first housing, the second housing, and the pivot mechanism, and is fixed to the first housing and the second housing.

[0023] In the electronic device of the present application, the first support plate and the second support plate of the rotation axis mechanism can rotate synchronously, thereby enabling synchronous rotation of the two housings of the electronic device. In this way, the force at each portion of the flexible display fixed to the two housings can be relatively uniform, preventing the flexible display from being pulled or compressed. This reduces the risk of damage to the flexible display and improves the structural reliability of the flexible display.

[0024] In a possible embodiment of the present application, a first open groove is provided at the end of the first housing facing the second housing, and a second open groove is provided at the end of the second housing facing the first housing. In this way, when the first support plate is fixed to the first housing, the first support plate may be disposed in the first open groove and fixed to the groove wall of the first open groove. The second support plate may be disposed in the second open groove and fixed to the groove wall of the second open groove.

[0025] Furthermore, when the electronic device is in the unfolded state, the first and second opening grooves can be pressed together to form a receiving section, and the rotating shaft mechanism can be hidden within the receiving section, so that the electronic device can have an appearance effect of an integrated design, so as to enhance the aesthetic appearance of the electronic device. [Brief explanation of the drawings]

[0026] [Figure 1] 1 is a schematic diagram of a structure of an electronic device according to an embodiment of the present application; [Figure 2] FIG. 2 is a schematic diagram of a structure of an electronic device according to another embodiment of the present application. [Figure 3] FIG. 2 is a schematic diagram of a structure of an electronic device according to another embodiment of the present application. [Figure 4] 1 is a schematic diagram of an exploded structure of an electronic device according to an embodiment of the present application; [Figure 5]FIG. 1 is a schematic diagram of the structure of a spindle module according to an embodiment of the present application. [Figure 6] This is a view of the spindle module shown in Figure 5 from direction A. [Figure 7] FIG. 7 is a schematic diagram of an exploded structure of the spindle module shown in FIG. 6. [Figure 8] 1 is a schematic diagram of a base structure according to an embodiment of the present application; [Figure 9a] FIG. 10 is a schematic diagram of the structure of a spindle module according to another embodiment of the present application. [Figure 9b] FIG. 10 is a schematic diagram of the structure of a spindle module according to another embodiment of the present application. [Figure 10] FIG. 2 is a schematic diagram of a transmission scheme of a first gear linkage and a second gear linkage according to an embodiment of the present application; [Figure 11] FIG. 7 is a cross-sectional view of the spindle module shown in FIG. 6 taken along line BB. [Figure 12] FIG. 10 is a schematic diagram of the mating of a first cam structure, a second cam structure, and a coupling cam according to an embodiment of the present application. [Figure 13] FIG. 10 is a schematic diagram of a structure of a rotary shaft mechanism according to another embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0027] To make the objectives, technical solutions and advantages of the present application clearer, the following further describes the present application in detail with reference to the accompanying drawings.

[0028] To facilitate understanding of the pivot mechanism provided in the embodiment of the present application, the application scenario of the pivot mechanism will be described first below. The pivot mechanism may be applied to foldable electronic devices, such as, but not limited to, mobile phones, palmtops (personal digital assistants, or PDAs), laptops, or tablets. For the application of the pivot mechanism provided in the embodiment of the present application to an electronic device, please refer to FIG. 1. FIG. 1 is a schematic diagram of the structure of an electronic device according to an embodiment of the present application. In addition to the pivot mechanism 1, the electronic device may further include a first housing 2, a second housing 3, and a flexible display (not shown in FIG. 1). The first housing 2 and the second housing 3 are disposed on both sides of the pivot mechanism 1 and are rotatable around the pivot mechanism 1. When the electronic device is used, the electronic device may be closed or unfolded based on various usage scenarios. In the embodiment shown in FIG. 1, the electronic device is in a closed state. FIG. 1 also shows the relative positional relationship between the pivot mechanism 1 and the two housings when the electronic device is in a closed state. In this case, the surface of the rotary shaft mechanism 1, the first surface 2a of the first housing 2, and the first surface 3a of the second housing 3 may be used together as the outer surface of the electronic device. The first surface 2a of the first housing 2 is the surface of the first housing 2 that is farther from the flexible display, and the first surface 3a of the second housing 3 is the surface of the second housing 3 that is farther from the flexible display.

[0029] FIG. 2 is a schematic diagram of the structure of the electronic device in an unfolded state. Note that FIG. 2 shows the structure of the second surface 2b of the first housing 2 and the second surface 3b of the second housing 3. The second surface 2b of the first housing 2 is a surface used to support a flexible display in the first housing 2, and the second surface 3b of the second housing 3 is a surface used to support a flexible display in the second housing 3. The flexible display can continuously cover the second surface 2b of the first housing 2, the second surface 3b of the second housing 3, and the rotation axis mechanism 1. The flexible display can also be fixed to the second surface 2b of the first housing 2 and the second surface 3b of the second housing 3, and the bonding method can be, but is not limited to, adhesive bonding. In this way, when the electronic device is in an unfolded state as shown in FIG. 2, the first housing 2 and the second housing 3 can support the flexible display.

[0030] 3 is a schematic diagram of the structure of the electronic device in a transition from the unfolded state to the closed state, or in an intermediate state between the closed state and the unfolded state. In the state shown in FIG. 3, the included angle between the second surface 2b of the first housing 2 and the second surface 3b of the second housing 3 is greater than 0° and less than 180°, and may be, for example, 150°. During the relative rotation of the first housing 2 and the second housing 3 from the unfolded state shown in FIG. 2 to the closed state shown in FIG. 1, or from the closed state shown in FIG. 1 to the unfolded state shown in FIG. 2, the flexible display may be folded together with the first housing 2 and the second housing 3.

[0031] It will be understood that the process of switching the electronic device from the unfolded state shown in FIG. 2 to the closed state shown in FIG. 1 or from the closed state shown in FIG. 1 to the unfolded state shown in FIG. 2 is a process in which the first housing 2 and the second housing 3 rotate around the pivot mechanism 1. As a main functional component of the foldable electronic device, the pivot mechanism 1 may be disposed corresponding to the folded portion of the flexible display. Therefore, the pivot mechanism 1 plays an important role in supporting the folded portion of the flexible display in the unfolded state shown in FIG. 2 and in accommodating the folded portion of the flexible display in the closed state shown in FIG. 1. In addition, the highly reliable structure of the pivot mechanism 1 can play an important role in achieving stability during the movement of the electronic device. To facilitate understanding of the pivot mechanism 1 provided in the embodiments of the present application, the structure of the pivot mechanism 1 will be described in detail below with reference to the accompanying drawings.

[0032] The terms used in the following embodiments are intended to describe particular embodiments only and are not intended to limit the present application. As used in this specification and the appended claims of this application, the singular terms "one," "a," "the foregoing," "this," and "the one" are intended to include expressions such as "one or more," unless the context clearly dictates otherwise.

[0033] References herein to "one embodiment," "some embodiments," etc., indicate that one or more embodiments of the present application include the particular feature, structure, or characteristic described with reference to the embodiment. Thus, statements such as "in one embodiment," "in some embodiments," "in some other embodiments," and "in other embodiments" appearing in various places herein do not necessarily refer to the same embodiment. Instead, these statements mean "one or more, but not all, embodiments," unless specifically emphasized otherwise. The terms "including," "comprising," and "having," and all variations thereof, mean "including, but not limited to," unless specifically emphasized otherwise.

[0034] FIG. 4 is a schematic diagram of the exploded structure of the electronic device shown in FIG. 2. As shown in FIG. 4, the first housing 2 and the second housing 3 are arranged on both sides of the rotary shaft mechanism 1. Referring to FIGS. 2 and 4 together, the rotary shaft mechanism 1 provided in the embodiment of the present application may include a main shaft module 101. There may be one or more main shaft modules 101, and the main shaft modules 101 are specifically arranged in the extension direction of the rotary shaft mechanism 1 based on the length of the rotary shaft mechanism 1. In the present application, the extension direction of the rotary shaft mechanism 1 is the same as the axial direction of the rotary shaft around which the first housing 2 and the second housing 3 rotate. In the embodiment shown in FIGS. 2 and 4, the rotary shaft mechanism 1 includes two main shaft modules 101, and the two main shaft modules 101 may be arranged symmetrically along the extension direction of the rotary shaft mechanism 1.

[0035] For a specific arrangement of each spindle module 101, please refer to FIG. 5. FIG. 5 is a schematic diagram of the structure of the spindle module 101 according to an embodiment of the present application. In this embodiment, the spindle module 101 may include a first support plate 1011 and a second support plate 1012. The first support plate 1011 may be fixed to the first housing 2 of the electronic device shown in FIG. 4, and the second support plate 1012 may be fixed to the second housing 3 of the electronic device. When the first housing 2 and the second housing 3 rotate relative to the rotary shaft mechanism 1, the support plate on the corresponding side may be driven to rotate.

[0036] 4 and 5 , in an embodiment of the present application, a first opening groove 201 may be provided at an end of the first housing 2 facing the second housing 3, and a second opening groove 301 may be provided at an end of the second housing 3 facing the first housing 2. In this case, a first support plate 1011 may be disposed in the first opening groove 201 and fixed to the groove wall of the first opening groove 201. A second support plate 1012 may be disposed in the second opening groove 301 and fixed to the groove wall of the second opening groove 301.

[0037] 2 and 4 together, when the electronic device is in the unfolded state, the first open groove 201 and the second open groove 301 press against each other to form a receiving section between the first housing 2 and the second housing 3. It can be seen from FIG. 2 that when the electronic device is in the unfolded state, the entire rotating shaft mechanism 1 can be hidden within the receiving section.

[0038] In this application, the first support plate 1011 and the second support plate 1012 can support a flexible display. Figure 5 shows the structure of the main shaft module 101 when the electronic device is in an unfolded state. In this case, the first support plate 1011 and the second support plate 1012 press against each other, and because the gap between the two support plates is relatively small, they combine to form a flat and continuous support surface. As a result, the flexible display can be stably supported and the flexible display can be prevented from being damaged by the rotating shaft mechanism 1, reducing deformation of the flexible display and improving the structural reliability of the flexible display.

[0039] FIG. 6 is a view of the spindle module 101 shown in FIG. 5 in direction A. In the present application, the spindle module 101 may further include a base 1013, which may be used as a support structure for the entire spindle module 101. The first support plate 1011 and the second support plate 1012 may be disposed on either side of the base 1013 and rotatably coupled to the base 1013, respectively. For a specific implementation, see FIG. 7. FIG. 7 is a schematic diagram of the exploded structure of the spindle module 101 shown in FIG. 6. The base 1013 may be provided with a first sliding groove 10131 and a second sliding groove 10132. The first sliding groove 10131 and the second sliding groove 10132 may be arcuate grooves. Furthermore, the first slide groove 10131 and the second slide groove 10132 may be arranged opposite each other in the direction from the first support plate 1011 to the second support plate 1012. Alternatively, the first slide groove 10131 and the second slide groove 10132 may be arranged alternately. In this way, the size of the base 1013 in the direction from the first support plate 1011 to the second support plate 1012 is effectively reduced, making it easier to design a compact rotating shaft mechanism 1.

[0040] 7 , in the present application, a first sliding arm 10111 may be provided on a side of the first support plate 1011 facing the base 1013, and a second sliding arm 10121 may be provided on a side of the second support plate 1012 facing the base 1013. The first sliding arm 10111 may be housed in a first sliding groove 10131, and the first sliding arm 10111 may be slidable along the first sliding groove 10131 in a direction toward or away from the second support plate 1012. The second sliding arm 10121 may be housed in a second sliding groove 10132, and the second sliding arm 10121 may be slidable along the first sliding groove 10131 in a direction toward or away from the first support plate 1011. In the present application, the first support plate 1011 and the second support plate 1012 are individually rotatably coupled to the base 1013 using a virtual axis where the sliding arms and sliding grooves fit together, so that the structural compactness of the rotary shaft mechanism 1 can be effectively improved.

[0041] 5 and 7, in the present application, a first avoidance opening 10112 is provided on the first support plate 1011, and a second avoidance opening 10122 is provided on the second support plate 1012. In this manner, the first avoidance opening 10112 can provide an avoidance space for the second sliding arm 10121 to slide, and the second avoidance opening 10122 can provide an avoidance space for the first sliding arm 10111 to slide, so that mutual interference between the movements of the first support plate 1011 and the second support plate 1012 can be avoided. Also, with further reference to Figure 5, when the rotary shaft mechanism 1 is in the unfolded state, the first sliding arm 10111 is accommodated in the second avoidance opening 10122 and the second sliding arm 10121 is accommodated in the first avoidance opening 10112, so that the first support plate 1011 and the second support plate 1012 can form a continuous, flat support surface used to support the flexible display.

[0042] 7, in the present application, the spindle module 101 may further include a first gear linkage 1014 and a second gear linkage 1015. A first gear 10141 is provided at an end of the first gear linkage 1014 facing the second gear linkage 1015, and a second gear 10151 is provided at an end of the second gear linkage 1015 facing the first gear linkage 1014. The first gear 10141 and the second gear 10151 may be coupled by transmission.

[0043] FIG. 8 is a schematic diagram of the structure of the base 1013 according to the present application. A first mounting hole 10133 and a second mounting hole 10134 are provided at the end of the base 1013, and the opening direction of the first mounting hole 10133 and the second mounting hole 10134 may be the same as the extension direction of the rotary shaft mechanism 1. In the embodiment shown in FIG. 8, both the first mounting hole 10133 and the second mounting hole 10134 are provided in a direction away from the first slide groove 10131 and the second slide groove 10132. Referring to FIGS. 7 and 8 together, in the present application, the first gear 10141 may be mounted in the first mounting hole 10133, and the second gear 10151 may be mounted in the second mounting hole 10134. In addition, the first gear 10141 can rotate within the first mounting hole 10133, and the second gear 10151 can rotate within the second mounting hole 10134, so that the first gear linkage portion 1014 and the second gear linkage portion 1015 are rotatably connected to the base 1013.

[0044] 6 and 7, a first track groove 10113 is further provided on the first support plate 1011, and a second track groove 10123 is further provided on the second support plate 1012. The opening direction of the first track groove 10113 is the same as the opening direction of the first mounting hole 10133, and the opening direction of the second track groove 10123 is the same as the opening direction of the second mounting hole 10134. A first guide component 10142 is provided on an end of the first gear interlocking portion 1014 remote from the second gear interlocking portion 1015. The first guide component 10142 is inserted into the first track groove 10113 and is slidable along the first track groove 10113. A second guide component 10152 is provided on an end of the second gear interlocking portion 1015 remote from the first gear interlocking portion 1014. The second guide part 10152 is inserted into the second track groove 10123 and is slidable along the second track groove 10123 .

[0045] It will be understood that the present application does not limit the specific shapes of the first track groove 10113 and the second track groove 10123. For example, the first track groove 10113 and the second track groove 10123 may be linear grooves, and while the first support plate 1011 and the second support plate 1012 are moving, the first support plate 1011 drives the first guide part 10142 to slide along a specific track along the first track groove 10113, and the second support plate 1012 drives the second guide part 10152 to slide along a specific track along the second track groove 10123. In addition, the present application does not limit the specific structural forms of the first guide part 10142 and the second guide part 10152. For example, the first guide part 10142 and the second guide part 10152 may be pin shafts, with one end of the pin shaft fixed to the gear interlocking part and the other end passing through the corresponding track groove. To prevent the pin shafts from falling out of the corresponding track grooves, see Figures 6 and 7. A fastener such as a nut may be disposed on the end of the pin shaft that passes through the track groove and is away from the gear interlocking part.

[0046] From the description of the above embodiment, it can be seen that the first gear linkage 1014 is coupled to the second gear linkage 1015 through transmission using a first gear 10141 and a second gear 10151. The first gear linkage 1014 is slidably coupled to the first support plate 1011 using a first guide piece 10142 and a first track groove 10113, and the second gear linkage 1015 is slidably coupled to the second support plate 1012 using a second guide piece 10152 and a second track groove 10123. Referring to Figures 9a and 9b together, Figure 9a shows the relative positions of the first support plate 1011, the second support plate 1012, the first gear linkage 1014, and the second gear linkage 1015 in the deployed state. Figure 9b shows the relative positions of the first support plate 1011, the second support plate 1012, the first gear linkage 1014, and the second gear linkage 1015 in the intermediate state. From the unfolded state shown in Figure 9a to the intermediate state shown in Figure 9b, the first support plate 1011 rotates relative to the base 1013 in a direction away from the second support plate 1012, driving the first gear linkage 1014 to rotate in the same direction relative to the base 1013. In this way, the second gear linkage 1015 rotates relative to the base 1013 in the opposite direction to the first gear linkage 1014. The second gear linkage 1015 can drive the second support plate 1012 to rotate relative to the base 1013 in a direction away from the first support plate 1011, such that the first support plate 1011 and the second support plate 1012 rotate synchronously, and the rotation direction of the second support plate 1012 is opposite to that of the first support plate 1011. It can be seen from FIGS. 9a and 9b that a display accommodating space can be formed between the first support plate 1011, the second support plate 1012, and the base 1013 during the process of changing from the unfolded state to the closed state. The display accommodating space can be used to accommodate a foldable portion of a flexible display, which can reduce pressure on the flexible display and the risk of damaging the flexible display.

[0047] It should be noted that the first support plate 1011 may be fixed to the first housing 2 of the electronic device, and the second support plate 1012 may be fixed to the second housing 3 of the electronic device, so that synchronous rotation of the first housing 2 and the second housing 3 can be implemented using the aforementioned solutions provided in the present application. It can be understood that the synchronous rotation of the first housing 2 and the second housing 3 can drive synchronous movement of the parts of the flexible display fixed to the first housing 2 and the second housing 3, which can effectively improve the uniformity of the force applied to each part of the flexible display. In this way, the flexible display can be avoided from being pulled or squeezed, thereby improving the structural reliability of the flexible display.

[0048] 7, the main shaft module 101 may further include a first gear shaft 1016 and a second gear shaft 1017. The first gear 10141 may be sleeved on the first gear shaft 1016, and the first gear 10141 may be rotatably coupled to the first gear shaft 1016. The second gear 10151 may be sleeved on the second gear shaft 1017, and the second gear 10151 may be rotatably coupled to the second gear shaft 1017. In this way, the movement stability of the first gear linkage 1014 and the second gear linkage 1015 is enhanced.

[0049] 10 is a schematic diagram of a transmission scheme of the first gear linkage 1014 and the second gear linkage 1015 according to an embodiment of the present application. In this embodiment of the present application, a driven gear 1018 may be further disposed between the first gear 10141 and the second gear 10151. There may be an even number of driven gears 1018, and the first gear 10141 and the second gear 10151 are coupled by transmission using the driven gear 1018. In this way, the rotational stability of the first gear linkage 1014 and the second gear linkage 1015 is enhanced.

[0050] 11 is a cross-sectional view along line BB of the spindle module 101 shown in FIG. 6. In this embodiment of the present application, in the process of the first support plate 1011 rotating relative to the base 1013, the first gear linkage 1014 may be driven to rotate relative to the base 1013. The first gear 10141 rotates along with the first gear linkage 1014, drives the driven gear 1018 to rotate, and transmits the rotational force to the second gear 10151, so that the second gear linkage 1015 rotates relative to the base 1013 in the opposite direction to the first gear linkage 1014. The second gear interlocking portion 1015 rotates to drive the second support plate 1012 to rotate relative to the base portion 1013, and the rotation direction of the second support plate 1012 is opposite to the rotation direction of the first support plate 1011, so that the first support plate 1011 and the second support plate 1012 rotate synchronously.

[0051] 8 and 11 , in the present application, the base 1013 may further be provided with a gear box 10135, and the driven gear 1018 may be mounted in the gear box 10135. It will be understood that the first mounting hole 10133 and the second mounting hole 10134 are in communication with the gear box 10135 to implement a power transmission coupling among the first gear 10141, the second gear 10151, and the driven gear 1018. The gear box 10135 is disposed, and the driven gear 1018 is mounted in the gear box 10135 to facilitate the storage of lubricant and to implement lubrication between adjacent driven gears 1018, lubrication of the contact surface between the driven gear 1018 and the first gear 10141, and lubrication of the contact surface between the driven gear 1018 and the second gear 10151. In this way, the risk of wear of each driven gear 1018, first gear 10141 and second gear 10151 is reduced and the reliability of the structure of the main shaft module 101 is increased.

[0052] 7 and 11 in the present application, the main shaft module 101 may further include an intermediate gear shaft 1019, and each driven gear 1018 may be sleeved on one intermediate gear shaft 1019, and the driven gear 1018 may be rotatably coupled to the intermediate gear shaft 1019. Referring to FIGS. 7 and 8 in the present application, a mounting groove 10136 is further provided in the base 1013. The mounting groove 10136 may be disposed between the first slide groove 10131 (second slide groove 10132) and the first mounting hole 10133 (second mounting hole 10134). The first gear shaft 1016, the second gear shaft 1017, and the intermediate gear shaft 1019 may be mounted in the mounting groove 10136, resulting in a relatively compact structure of the main shaft module 101.

[0053] 7 , the main shaft module 101 may include a coupling fastener 1020, and ends of the first gear shaft 1016, the second gear shaft 1017, and the intermediate gear shaft 1019 remote from the first gear linkage 1014 and the second gear linkage 1015 may be coupled using the coupling fastener 1020. The first gear shaft 1016, the second gear shaft 1017, and the intermediate gear shaft 1019 may be coupled to the coupling fastener 1020 in a threaded manner. That is, the coupling fastener 1020 has threaded holes arranged at positions corresponding to the first gear shaft 1016, the second gear shaft 1017, and the intermediate gear shaft 1019. Male threads are arranged on the ends of the first gear shaft 1016, the second gear shaft 1017, and the intermediate gear shaft 1019. Therefore, it is convenient for the first gear shaft 1016, the second gear shaft 1017, and the intermediate gear shaft 1019 to be coupled to the coupling fastener 1020. Referring to both Fig. 6 and Fig. 7, in the present application, the coupling fastener 1020 may be mounted in the mounting groove 10136, and the coupling fastener 1020 can abut against a groove wall away from the first mounting hole 10133 (second mounting hole 10134) in the mounting groove 10136. Also, in a possible embodiment of the present application, in order to increase the reliability of the coupling between the coupling fastener 1020 and the base 1013, the coupling fastener 1020 and the groove wall of the mounting groove 10136 may be fixed by a method such as adhesive bonding or a fixed lock.

[0054] The process of unfolding or closing an electronic device using the rotating shaft mechanism 1 provided in the present application is typically performed by applying a rotational force to the first housing 2 and / or the second housing 3. When the first housing 2 and the second housing 3 rotate relative to the base 1013, the user can clearly feel the unfolding or closing of the electronic device. The main shaft module 101 provided in the present application can also generate a damping force. For a specific embodiment, referring further to FIG. 7 , the first gear linkage 1014 may further include a first cam structure 10143, and the first cam structure 10143 and the first gear 10141 are coaxially arranged. The first cam structure 10143 is also arranged outside the base 1013. Similarly, the second gear linkage 1015 may further include a second cam structure 10153. The second cam structure 10153 and the second gear 10151 are arranged coaxially, and the second cam structure 10153 is arranged outside the base 1013. In the present application, the first cam structure 10143 and the first gear 10141 may be an integrated structure, and the second cam structure 10153 and the second gear 10151 may be an integrated structure. This improves the structural reliability of the first gear interlocking portion 1014 and the second gear interlocking portion 1015.

[0055] The spindle module 101 may further include a coupling cam 1021, which may include a third cam structure 10211 and a fourth cam structure 10212. The third cam structure 10211 may be disposed opposite the first cam structure 10143, and the third cam structure 10211 may be sleeved on the first gear shaft 1016. In this case, the first gear shaft 1016 can pass through the first gear 10141, the first cam structure 10143, and the third cam structure 10211 simultaneously. The fourth cam structure 10212 may be disposed opposite the second cam structure 10153, and the fourth cam structure 10212 may be sleeved on the second gear shaft 1017. In this case, the second gear shaft 1017 can pass through the second gear 10151, the second cam structure 10153, and the fourth cam structure 10212 simultaneously. It should be noted that in this application, the cam structure includes multiple protrusions and recesses. When the protrusion of one of the two cam structures arranged opposite to each other is within the recess of the other cam structure, the two cam structures are engaged, preventing relative rotation between the two cam structures and thereby generating a damping force. When the protrusion of one of the two cam structures arranged opposite to each other is in contact with the protrusion of the other cam structure, the two cam structures are abutting each other.

[0056] It can be seen that during the relative rotation, the two opposing cam structures rotate to a set rotation position, so that when the two cam structures are engaged, a corresponding damping force can be generated. In this way, a relatively clear sensation can be provided to the user during the rotation of the electronic device, and accidental opening and closing of the electronic device can be avoided, improving the user experience. Furthermore, the spacing between the convex and concave portions of the cam structures can be appropriately designed so that when the electronic device is closed or unfolded to a certain angle, the electronic device can maintain the corresponding rotation position without external force; when the electronic device is unfolded to a relatively large angle (e.g., 150° or more), the electronic device can continue to unfold to a flat state without external force; or when the electronic device is closed to a relatively small angle (e.g., 30° or less), the electronic device can continue to move in the closing direction without external force until it is completely closed. In this way, the user's personal usage requirements can be met.

[0057] 12 shows the mating relationship between the first cam structure 10143, the second cam structure 10153, and the coupling cam 1021 according to one embodiment of the present application. In the present application, the spindle module 101 may further include an elastic mechanical part 1022, which may be configured to press the first cam structure 10143 and the second cam structure 10153 against the coupling cam 1021. For a specific embodiment, the elastic mechanical part 1022 may be disposed between the coupling fastener 1020 and the first gear 10141 and the second gear 10151. The elastic mechanical part 1022 elastically abuts against the connecting fastener 1020, the first gear 10141, and the second gear 10151 individually, and as a result, the elastic mechanical part 1022 accumulates elastic pressing force from the connecting fastener 1020 in the direction of the first gear 10141 and the second gear 10151, pressing the first cam structure 10143 and the second cam structure 10153 against the connecting cam 1021.

[0058] The present application is not limited to a specific arrangement of the elastic mechanical part 1022. For example, the elastic mechanical part 1022 may be a spring, and there may be a plurality of elastic mechanical parts 1022, with at least one elastic mechanical part 1022 being sleeved on the first gear shaft 1016 and at least one elastic mechanical part 1022 being sleeved on the second gear shaft 1017. In some embodiments of the present application, the elastic mechanical part 1022 may be sleeved on the intermediate gear shaft 1019 to provide sufficient pressing force between the first cam structure 10143, the second cam structure 10153, and the coupling cam 1021.

[0059] 12 , in the present application, a fastener such as a nut may be further arranged on the side of the coupling cam 1021 away from the base 1013 to prevent the coupling cam 1021 from falling off the first gear shaft 1016 and the second gear shaft 1017. The fastener may be arranged on the first gear shaft 1016 and the second gear shaft 1017 and locked to the first gear shaft 1016 and the second gear shaft 1017, so that the coupling cam 1021 is restricted to the first gear shaft 1016 and the second gear shaft 1017.

[0060] From the description of the above embodiment, it can be seen that the first gear shaft 1016, the second gear shaft 1017, and the intermediate gear shaft 1019 can all be coupled to the coupling fastener 1020 by a screw type. Based on this, in the present application, the fastening degree between the first gear shaft 1016 and the coupling fastener 1020, the second gear shaft 1017 and the coupling fastener 1020, and the intermediate gear shaft 1019 and the coupling fastener 1020 can be adjusted, so as to adjust the deformation of the elastic mechanical part 1022. In this way, the pressing force between the first cam structure 10143, the second cam structure 10153, and the coupling cam 1021 can be adjusted, thereby achieving the purpose of adjusting the damping force during the rotation of the main shaft module 101.

[0061] By using the rotary shaft mechanism 1 provided in the present application, a module configured to perform synchronous rotation and a module for providing a damping force in the main shaft module 101 of the rotary shaft mechanism 1 can be integrated into one, thereby effectively simplifying the structure of the main shaft module 101 and making the structure of the main shaft module 101 relatively compact. Therefore, the space occupied by the main shaft module 101 in the rotary shaft mechanism 1 is reduced, allowing more functional modules to be arranged in the rotary shaft mechanism 1 and implementing diverse functional designs of electronic devices using the rotary shaft mechanism 1.

[0062] In the present application, when the rotary shaft mechanism 1 has multiple spindle modules 101, the multiple spindle modules 101 may be arranged at intervals. The gap between two adjacent spindle modules 101 is reduced, so that the rotary shaft mechanism 1 can form a relatively complete support surface. FIG. 13 is a schematic diagram of the structure of the rotary shaft mechanism 1 according to an embodiment of the present application. The rotary shaft mechanism 1 provided in the present application may further include a cover plate. The cover plate may be disposed between two adjacent spindle modules 101, and the cover plate includes a first sub-cover plate 1023 and a second sub-cover plate 1024. The first sub-cover plate 1023 is rotatably coupled to the base 1013 and fixed to the first support plate 1011, forming a continuous and flat support surface between the first sub-cover plate 1023 and the first support plate 1011. Similarly, the second sub-cover plate 1024 is rotatably coupled to the base 1013, and the second sub-cover plate 1024 is fixed to the second support plate 1012 to form a continuous, flat support surface between the second sub-cover plate 1024 and the second support plate 1012. In this way, when the first support plate 1011 rotates relative to the base 1013, the first sub-cover plate 1023 may be driven to rotate synchronously, and when the second support plate 1012 rotates relative to the base 1013, the second sub-cover plate 1024 may be driven to rotate synchronously.

[0063] It will also be understood that devices such as circuit boards or sensors may be disposed within the two housings of the electronic device, and electrical connection between the devices within the two housings may be implemented through cables passing through the rotary shaft mechanism 1. In this embodiment of the present application, the cables used to couple the device having two housings may pass through the rotary shaft mechanism 1 through the area covered by the cover plate, so that interference between the cables and the spindle module 101 may be avoided, and the cables may be further hidden within the area covered by the cover plate to enhance the aesthetic appearance of the rotary shaft mechanism 1.

[0064] For the application of the rotary shaft mechanism 1 provided in the present application to an electronic device, please further refer to FIG. 4 . In addition to the above structure, the rotary shaft mechanism 1 may further include a decorative cover 1025. The decorative cover 1025 has a receiving groove 10251. In the present application, the base 1013 may be used as a supporting component of the rotary shaft mechanism 1, and thus the base 1013 may be received in the receiving groove 10251 and fixed to the receiving groove 10251. The coupling method may be, but is not limited to, a fixed coupling using screws, bolts, etc. Also, referring to FIG. 1 , when the electronic device is in a closed state, the surface of the decorative cover 1025 may be used as the outer surface of the rotary shaft mechanism 1 to help improve the aesthetic appearance of the electronic device.

[0065] The above description is merely a specific embodiment of the present application and is not intended to limit the scope of protection of the present application. Any modifications or replacements that can be easily thought up by those skilled in the art within the technical scope disclosed in the present application are included in the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the scope of protection of the claims. [Explanation of symbols]

[0066] 1 Rotational axis mechanism 101 Spindle Module 1011 First support plate 10111 First sliding arm 10112 First Evasion Aperture 10113 First track groove 1012 Second support plate 10121 Second sliding arm 10122 Second Evasion Aperture 10123 Second track groove 1013 base 10131 First sliding groove 10132 Second sliding groove 10133 First mounting hole 10134 Second mounting hole 10135 Gearbox 10136 Mounting groove 1014 First gear linkage 10141 First Gear 10142 First guide part 10143 First cam structure 1015 Second gear linkage 10151 Second Gear 10152 Second guide part 10153 Second cam structure 1016 First gear shaft 1017 Second gear shaft 1018 Driven gear 1019 Intermediate gear shaft 1020 Joint fastener 1021 Combined Cam 10211 Third cam structure 10212 Fourth Cam Structure 1022 Elastic mechanical parts 1023 First sub-cover plate 1024 Second sub-cover plate 1025 Decorative Cover 10251 Storage groove 2. First Housing 2a First side 2b Second side 201 First opening groove 3 Second Housing 3a First Side 3b Second Side 301 Second opening groove

Claims

1. A rotary shaft mechanism comprising a main shaft module, the main shaft module including a base, a first support plate, a second support plate, a first gear linkage, a second gear linkage, an elastic mechanical component, and a cam portion; the first support plate and the second support plate are disposed on opposite sides of the base, the first support plate and the second support plate are rotatably coupled to the base, the first support plate is provided with a first track groove, and the second support plate is provided with a second track groove; The first gear linkage and the second gear linkage are rotatably coupled to an end of the base, and a first gear and a first cam structure are provided coaxially at one end of the first gear linkage facing the second gear linkage, a first guide part is provided at one end of the first gear linkage remote from the second gear linkage, a second gear and a second cam structure are provided coaxially at one end of the second gear linkage facing the first gear linkage, and a second guide part is provided at one end of the second gear linkage remote from the first gear linkage, the first gear and the second gear are coupled by power transmission, the first guide component is inserted into the first track groove and is slidable along the first track groove, and the second guide component is inserted into the second track groove and is slidable along the second track groove, the cam portion is provided with a third cam structure and a fourth cam structure, the third cam structure is disposed opposite the first cam structure, and the fourth cam structure is disposed opposite the second cam structure; the elastic mechanical component is disposed on a side of the first cam structure and the second cam structure away from the cam portion, and the elastic mechanical component presses the first cam structure and the second cam structure against the cam portion; a first mounting hole and a second mounting hole are provided at an end of the base, the opening directions of the first mounting hole and the second mounting hole are the same as the extension direction of the rotary shaft mechanism, the first gear is mounted in the first mounting hole, the second gear is mounted in the second mounting hole, the opening direction of the first track groove is the same as the opening direction of the first mounting hole, and the opening direction of the second track groove is the same as the opening direction of the second mounting hole; Rotating axis mechanism.

2. 2. The rotating shaft mechanism of claim 1, wherein the main shaft module further includes a first gear shaft and a second gear shaft, the first gear shaft passing through the first gear, the first cam structure, and the third cam structure, the first gear linkage being rotatably coupled to the first gear shaft, and the second gear shaft passing through the second gear, the second cam structure, and the fourth cam structure, the second gear linkage being rotatably coupled to the second gear shaft.

3. the main shaft module further includes a coupling fastener, an end of the first gear shaft remote from the first gear linkage is threadedly coupled to the coupling fastener, and an end of the second gear shaft remote from the second gear linkage is threadedly coupled to the coupling fastener; 3. The rotating shaft mechanism according to claim 2, wherein the elastic mechanical part is disposed between the connecting fastener and the first gear and the second gear, and the elastic mechanical part elastically abuts against the connecting fastener, the first gear, and the second gear, respectively.

4. 4. The rotating shaft mechanism of claim 3, wherein there are a plurality of resilient mechanical components, at least one resilient mechanical component being sleeved on the first gear shaft and at least one resilient mechanical component being sleeved on the second gear shaft.

5. 4. The rotating shaft mechanism according to claim 3, wherein the base is further provided with a mounting groove, the coupling fastener, the elastic mechanical component, the first gear shaft, and the second gear shaft are housed in the mounting groove, and the coupling fastener abuts against a groove wall of the mounting groove.

6. a first sliding groove and a second sliding groove are provided in the base, a first sliding arm is provided on a side of the first support plate facing the base, and a second sliding arm is provided on a side of the second support plate facing the base; 2. The rotating shaft mechanism according to claim 1, wherein the first sliding arm is housed in the first sliding groove and is slidable along the first sliding groove in a direction toward or away from the second support plate, and the second sliding arm is housed in the second sliding groove and is slidable along the second sliding groove in a direction toward or away from the first support plate.

7. The rotary shaft mechanism according to claim 6 , wherein the first slide grooves and the second slide grooves are arranged alternately in a direction from the first support plate to the second support plate.

8. 2. The rotary shaft mechanism of claim 1, wherein the main shaft module further includes driven gears, there being an even number of driven gears, the driven gears being disposed between the first gear and the second gear, and the first gear and the second gear being coupled by transmission using the driven gears.

9. 9. The rotating shaft mechanism of claim 8, wherein said main shaft module further includes an intermediate gear shaft, said driven gear being sleeved on said intermediate gear shaft, said driven gear being rotatably coupled to said intermediate gear shaft.

10. The rotary shaft mechanism of claim 8 , wherein the base is further provided with a gear box, and the driven gear is mounted within the gear box.

11. A rotating shaft mechanism as described in Claim 10, wherein the first mounting hole and the second mounting hole are connected to the gear box.

12. the rotary shaft mechanism includes a plurality of spindle modules, the plurality of spindle modules being arranged at intervals; 2. The rotary shaft mechanism of claim 1, further comprising a cover plate disposed between two adjacent spindle modules, the cover plate including a first sub-cover plate and a second sub-cover plate, the first sub-cover plate and the second sub-cover plate being rotatably coupled to the base, the first sub-cover plate being fixed to the first support plate, and the second sub-cover plate being fixed to the second support plate.

13. An electronic device comprising: a first housing, a second housing, a flexible display, and the pivot mechanism according to any one of claims 1 to 12; the first housing and the second housing are disposed on both sides of the rotary shaft mechanism, respectively, the first support plate is fixed to the first housing, and the second support plate is fixed to the second housing; the flexible display continuously covers the first housing, the second housing, and the rotation axis mechanism, and the flexible display is fixed to the first housing and the second housing. Electronic devices.

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