Hinge mechanism and foldable electronic device

Abstract

The application discloses a hinge mechanism and a foldable electronic device, and belongs to the technical field of electronic products. The hinge mechanism comprises a base, a first rotating shaft, a first swing arm, a first damping mechanism and a first limiting mechanism. The first rotating shaft is arranged on the base. The first swing arm is connected to the first rotating shaft and can rotate relative to the base between an unfolded position and a folded position. The first damping mechanism is arranged between the first swing arm and the first rotating shaft. The first limiting mechanism comprises a first limiting piece, a second limiting piece and a first adjusting structure. The first limiting piece is arranged on the first rotating shaft and abuts against the first damping mechanism. The first limiting piece can move in the axial direction of the first rotating shaft. The second limiting piece is arranged on the side of the first limiting piece away from the first damping mechanism. The first adjusting structure is arranged between the first limiting piece and the second limiting piece. The first adjusting structure is used for adjusting the distance between the first limiting piece and the second limiting piece, so as to adjust the position of the first limiting piece in the axial direction of the first rotating shaft.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic products, and in particular to a hinge mechanism and a foldable electronic device. BACKGROUND

[0002] At present, in order to solve the problems of large size and inconvenience of carrying of the traditional straight terminal, the foldable electronic device emerges as the times require. The foldable electronic device comprises a first shell, a second shell and a hinge mechanism. The first shell and the second shell are rotatably arranged on opposite sides of the hinge mechanism, so that the foldable electronic device can be folded between an unfolded state and a folded state. In order to enable the foldable electronic device to be stably kept in the unfolded state, the intermediate hovering state and the folded state, a damping mechanism is usually arranged on the hinge mechanism. However, when the parts of the damping mechanism are worn, the damping force provided by the damping mechanism will be reduced, so that the foldable electronic device cannot be stably kept in the intermediate hovering state after being used for a period of time. SUMMARY

[0003] The present application provides a hinge mechanism and a foldable electronic device, which can adjust the damping force of the damping mechanism, so that the foldable electronic device can still be stably kept in the intermediate hovering state after being used for a period of time.

[0004] To achieve the above object, the present application adopts the following technical scheme:

[0005] In a first aspect, a hinge mechanism is provided, comprising: a base, a first rotating shaft, a first swing arm, a first damping mechanism and a first limiting mechanism, the first rotating shaft being arranged on the base; the first swing arm being connected to the first rotating shaft and being rotatable relative to the base between an unfolded position and a folded position; the first damping mechanism being arranged between the first swing arm and the first rotating shaft and being used for providing a damping force to the first swing arm; the first limiting mechanism comprising a first limiting piece, a second limiting piece and a first adjusting structure, wherein the first limiting piece is arranged on the first rotating shaft and abuts against the first damping mechanism, the first limiting piece being movable along the axial direction of the first rotating shaft to adjust the damping force of the first damping mechanism; the second limiting piece being arranged on the side of the first limiting piece away from the first damping mechanism; the first adjusting structure being arranged between the first limiting piece and the second limiting piece, the first adjusting structure being used for adjusting the distance between the first limiting piece and the second limiting piece to adjust the position of the first limiting piece in the axial direction of the first rotating shaft.

[0006] When the position of the first limiting member in the axial direction of the first rotating shaft changes, the damping force and the torsion force curve of the first damping mechanism change accordingly. When the position of the first limiting member in the axial direction of the first rotating shaft does not change, the damping force and the torsion force curve of the first damping mechanism are not affected by the first limiting member. Specifically, when the distance between the first limiting member and the second limiting member increases, the first limiting member moves towards the first damping mechanism, and the damping force of the first damping mechanism increases. When the distance between the first limiting member and the second limiting member decreases, the first limiting member moves away from the first damping mechanism, and the damping force of the first damping mechanism decreases.

[0007] Therefore, when it is necessary to adjust the damping force and the torsion force curve of the first damping mechanism, the distance between the first limiting member and the second limiting member can be adjusted by the first adjusting structure, the position of the first limiting member in the axial direction of the first rotating shaft is changed, and the damping force and the torsion force curve of the first damping mechanism are adjusted. For example, a user can adjust the position of the first limiting member in the axial direction of the first rotating shaft through after-sales maintenance or self-maintenance, and then adjust the damping force and the torsion force curve of the first damping mechanism. In this way, when the parts of the first damping mechanism are worn due to manufacturing tolerances or long-term use, and the damping force provided by the first damping mechanism decreases, the distance between the first limiting member and the second limiting member can be adjusted by the first adjusting structure, the position of the first limiting member in the axial direction of the first rotating shaft is changed, and the damping force of the first damping mechanism is increased, so that the foldable electronic device can be stably maintained in the intermediate hovering state, which is beneficial to improving the user experience. In addition, the damping force and the torsion force curve of the first damping mechanism can be adjusted by the first adjusting structure after the foldable electronic device is shipped, so as to meet different requirements of users for the damping feeling. Furthermore, the damping force of the first damping mechanism can be adjusted by the first adjusting structure, so that the damping force provided by the first damping mechanism is greater than the tension generated after the folded screen is used for a period of time in the flat state, the stable switching of the foldable electronic device from the flat state to the intermediate hovering state is realized, the foldable electronic device can stably switch from the folded state to the intermediate hovering state, and can stably switch from the flat state to the intermediate hovering state, and the user experience can be further improved.

[0008] In a possible implementation, the first adjusting structure includes a first cooperating part and a second cooperating part that cooperate with each other, one of the first cooperating part and the second cooperating part is arranged on the first limiting member, and the other is arranged on the second limiting member. The first cooperating part and the second cooperating part have a plurality of cooperating positions, and the distance between the first limiting member and the second limiting member is different at different cooperating positions. A specific implementation is provided.

[0009] In a possible implementation, the first limiting member and the second limiting member are relatively rotatable about the first rotation axis, so as to switch the first matching part and the second matching part between the plurality of matching positions; and the first rotation axis is parallel to the axial direction of the first rotating shaft. In this way, the matching position between the first matching part and the second matching part can be switched to a target matching position by rotating the first limiting member and / or the second limiting member, so as to adjust the first limiting member to a target position, and then the damping force and the torsion curve of the first damping mechanism can be adjusted, and the structure is simple and ingenious.

[0010] In a possible implementation, the first matching part and the second matching part are in abutting matching. In this way, the matching stability between the first matching part and the second matching part can be improved, the first limiting member and the second limiting member can be kept relatively static by means of the first adjusting structure when the first matching part and the second matching part are in the target matching position, so as to avoid the distance between the first limiting member and the second limiting member from changing, which is beneficial to keeping the first limiting member in the target position, and the stability of the hinge mechanism and the folding and unfolding process of the foldable electronic device can be improved, and the structure is simple and small in size.

[0011] In a possible implementation, the first limiting member is rotatable about the first rotation axis relative to the base, and the first limiting member is not linked with the first swing arm. In this way, the first limiting member can be prevented from rotating with the first swing arm, and thus the position of the first limiting member in the axial direction of the first rotating shaft can be prevented from changing with the rotation of the first swing arm.

[0012] In a possible implementation, the second limiting member is rotatable about the first rotation axis relative to the base, and the second limiting member is not linked with the first swing arm. In this way, the second limiting member can be prevented from rotating with the first swing arm, and thus the position of the first limiting member in the axial direction of the first rotating shaft can be prevented from changing with the rotation of the first swing arm.

[0013] In a possible implementation, the first matching part extends along the circumference of the first circle, and the first matching part includes a first extension end and a second extension end in the extension path of the first matching part, and the thickness of the first matching part gradually increases in the direction from the first extension end to the second extension end, and the center of the first circle is located on the rotation axis of the first limiting member and / or the second limiting member. A specific structure of the first matching part is provided.

[0014] In a possible implementation, the second matching part includes a second abutting end for abutting with the first matching part, and the end face of the second abutting end is formed as an arc surface that is arched towards the first matching part. A specific structure of the second matching part is provided.

[0015] In a possible implementation, the first cooperating part is a first magnet, and the second cooperating part is a second magnet, the magnetization direction of the first magnet is parallel to the axial direction of the first rotating shaft, and the magnetization direction of the second magnet is opposite to that of the first magnet; when the first limiting part and the second limiting part rotate relative to each other, the magnetic repulsion between the first magnet and the second magnet can change in size. Another cooperation mode of the first cooperating part and the second cooperating part is provided.

[0016] In a possible implementation, the first limiting part can rotate relative to the base about the first rotating axis, and the first limiting part is provided with a first driven rod, at least part of the first driven rod being located on the circumferential outer side of the first limiting part; or the second limiting part can rotate relative to the base about the first rotating axis, and the second limiting part is provided with a first driven rod, at least part of the first driven rod being located on the circumferential outer side of the second limiting part; the hinge mechanism further includes a driving rod connected to the first driven rod, the driving rod being movable relative to the base in a first direction to drive the first limiting part or the second limiting part to rotate about the first rotating axis; wherein the first direction is perpendicular to the first rotating axis. A specific structure for driving the first limiting part or the second limiting part to rotate so that the first limiting part and the second limiting part can rotate relative to each other is provided.

[0017] In a possible implementation, an accommodation space is defined in the base, and the base is provided with a communication hole, the communication hole including a first aperture and a second aperture in communication, the first aperture being in communication with the accommodation space, and the second aperture being in communication with the external space of the base; the driving rod is arranged in the communication hole, and the driving rod includes opposite first and second ends, the first end extending out of the first aperture and connected to the first driven rod, and the second end exposed to the second aperture. In this way, the driving rod can be moved in the first direction from the outside of the base, and the adjustment of the position of the first limiting part in the axial direction of the first rotating shaft can be achieved without disassembling the foldable electronic device, thereby effectively reducing the difficulty of adjusting the damping force and the torque curve of the first damping mechanism, and the structure is simple, ingenious and easy to implement.

[0018] In a possible implementation, the driving rod is threadedly connected to the communication hole. In this way, on the one hand, the adjustment of the locking position of the driving rod can be achieved by rotating the driving rod to control the movement of the driving rod in the first direction; on the other hand, after the driving rod is adjusted to the target locking position, the driving rod can be locked in the communication hole through the threaded cooperation, so as to avoid the movement of the driving rod.

[0019] In a possible implementation, the outer surface of the base is provided with a recessed groove portion inwardly recessed, the communication hole penetrates a groove bottom wall of the recessed groove portion, and the second end of the driving rod is located in the recessed groove portion. In this way, the end of the driving rod can be prevented from protruding from the outer surface of the base, which is conducive to improving the appearance aesthetics of the hinge mechanism, and thus the appearance aesthetics of the foldable electronic device.

[0020] In a possible implementation, the hinge mechanism further comprises a decorative cover, which is arranged in the groove portion; or the decorative cover is arranged on the outer surface of the base and blocks the groove portion. In this way, the appearance of the hinge mechanism and the foldable electronic device can be further improved, and the waterproof performance of the hinge mechanism and the foldable electronic device can be improved.

[0021] In a possible implementation, the first swing arm is provided with a first shaft sleeve, the first shaft sleeve is located on the side of the second limiting member away from the first damping mechanism, and the first rotating shaft is fixedly connected to the first shaft sleeve. A linkage mode of the first swing arm and the first rotating shaft is provided.

[0022] In a possible implementation, the hinge mechanism further comprises a first bearing, the first bearing comprises a first static ring and a first dynamic ring, the first static ring is rotatably connected to the first rotating shaft, and the first static ring abuts against the side of the second limiting member away from the first limiting member; the first dynamic ring is rotatably connected to the axial side of the first static ring, and the first dynamic ring abuts against the second limiting member. In this way, the second limiting member can be prevented from rotating with the first swing arm, and the position of the first limiting member in the axial direction of the first rotating shaft can be prevented from changing with the rotation of the first swing arm.

[0023] In a possible implementation, the hinge mechanism further comprises a first fixing member and a second fixing member, the first fixing member is arranged on the driving rod, the second fixing member is arranged on the first driven rod, and when the first matching portion and the second matching portion are in the matching position, the first fixing member and the second fixing member are matched with each other to limit the rotation of the first driven rod relative to the driving rod. In this way, after the first matching portion and the second matching portion are adjusted to the target matching position, the relative fixation between the first driven rod and the driving rod can be realized by the first fixing member and the second fixing member, the relative rotation of the first limiting member and the second limiting member with the rotation of the first swing arm can be avoided, the first matching portion and the second matching portion can be stably kept in the target matching position, and the stability of the folding process of the foldable electronic device can be further improved.

[0024] In a possible implementation, when the driving rod moves relative to the base in the first direction, the first fixing member and the second fixing member are in sliding cooperation. In this way, the movement of the driving rod can be avoided from being interfered by the first fixing member and the second fixing member, and the rotation of the first driven rod can be ensured.

[0025] In a possible implementation, the first fixing member comprises a first clamping portion, the second fixing member comprises a second clamping portion, and when the first matching portion and the second matching portion are in the matching position, the first clamping portion and the second clamping portion are clamped and matched. A specific cooperation mode of the first fixing member and the second fixing member is provided.

[0026] In a possible implementation, the first fixing member comprises a first clamping plate, a second clamping plate, and a connecting plate. The second clamping plate is arranged in a spaced-apart manner relative to the first clamping plate. The connecting plate is connected to the first clamping plate and the second clamping plate. The first clamping plate, the second clamping plate, and the connecting plate define a clamping groove therebetween. The clamping groove is located on a side of the connecting plate that faces away from the driving rod. At least a portion of the first driven rod is located in the clamping groove. The first clamping portion is arranged on the first clamping plate and / or the second clamping plate. A specific structure of the first fixing member is provided.

[0027] In a possible implementation, the first clamping portion comprises a first clamping groove and a second clamping groove. The first clamping groove is arranged on the first clamping plate. The second clamping groove is arranged on the second clamping plate. The second clamping portion is a first clamping shaft. Two ends of the first clamping shaft are respectively clamped and matched with the first clamping groove and the second clamping groove. A specific structure of the first clamping portion and the second clamping portion is provided.

[0028] In a possible implementation, the first fixing member is rotatably connected to the driving rod. In this way, when the driving rod is rotated to move the driving rod in the first direction, the driving rod can be rotated relative to the first fixing member, thereby facilitating adjustment of the driving rod.

[0029] In a possible implementation, a size of the first driven rod in the axial direction of the first rotating shaft is smaller than a spacing between the first clamping plate and the second clamping plate. In this way, cooperation of the first fixing member and the second fixing member can avoid limiting movement of the first limiting member in the axial direction of the first rotating shaft.

[0030] In a possible implementation, the first fixing member comprises a first magnetic attraction member, and the second fixing member comprises a second magnetic attraction member. When the first cooperation portion and the second cooperation portion are in the target cooperation position, the first magnetic attraction member and the second magnetic attraction member are magnetically attracted and cooperated. Another cooperation manner of the first fixing member and the second fixing member is provided.

[0031] In a possible implementation, the second limiting member is fixed in position in the axial direction of the first rotating shaft. In this way, when the first cooperation portion and the second cooperation portion are in the target cooperation position, the position of the first limiting member in the axial direction of the first rotating shaft can be fixed, the first limiting member can be kept at the target position, and the stability of the hinge mechanism and the foldable electronic device can be further improved.

[0032] In a possible implementation, the first damping mechanism comprises a first damping member, a second damping member, and a first elastic member. The first damping member is fixedly connected to the first swing arm and can be synchronously rotated with the first swing arm. The second damping member is arranged on the first rotating shaft and can move in the axial direction of the first rotating shaft. The first elastic member is sleeved on the first rotating shaft. The first elastic member is configured to apply a force to the second damping member, the force being directed to the first damping member so that the first damping member and the second damping member are kept in contact. A specific structure of the first damping mechanism is provided.

[0033] In a possible implementation, the hinge mechanism further includes a second rotating shaft, a second swing arm, a second damping mechanism and a second limiting mechanism. The second rotating shaft is arranged at a distance from the first rotating shaft. The second swing arm is connected to the second rotating shaft and can rotate relative to the base between the unfolded position and the folded position. The second damping mechanism is arranged between the second swing arm and the second rotating shaft and is configured to provide a damping force to the second swing arm. The second limiting mechanism includes a third limiting member, a fourth limiting member and a second adjusting structure. The second limiting member is arranged on the second rotating shaft and abuts against the second damping mechanism. The third limiting member is movable along the axial direction of the second rotating shaft to adjust the damping force of the second damping mechanism, and the third limiting member is relatively stationary with the base at least in the axial direction of the second rotating shaft when the second swing arm rotates relative to the base. The fourth limiting member is arranged on the side of the third limiting member away from the second damping mechanism. The second adjusting structure is arranged between the third limiting member and the fourth limiting member and is configured to adjust the distance between the third limiting member and the fourth limiting member to adjust the position of the third limiting member in the axial direction of the second rotating shaft. In this way, the damping force and the torsional force curve of the second damping mechanism can be adjusted.

[0034] In a possible implementation, the structure of the second damping mechanism is the same as that of the first damping mechanism.

[0035] In a possible implementation, the structure of the second limiting mechanism is the same as that of the first limiting mechanism.

[0036] In a second aspect, the present application provides a foldable electronic device, including: a first shell, a second shell, a hinge mechanism and a folding screen, the hinge mechanism being connected between the first shell and the second shell, and the hinge mechanism being any of the hinge mechanisms described above; the folding screen including a first part, a second part and a third part, the third part being connected between the first part and the second part, the first part being arranged on the first shell, the second part being arranged on the second shell, and the third part being arranged on the hinge mechanism.

[0037] The technical effects brought by any of the design manners in the second aspect can be referred to the technical effects brought by the different design manners in the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 FIG. 1 shows a perspective view of a foldable electronic device in a flat state according to some embodiments of the present application;

[0039] Figure 2 FIG. 2 shows a perspective view of a foldable electronic device in a folded state according to some embodiments of the present application; Figure 1 FIG. 3 shows a perspective view of a foldable electronic device in an intermediate hovering state according to some embodiments of the present application;

[0040] Figure 3 FIG. 4 shows a perspective view of a foldable electronic device in an intermediate hovering state according to some embodiments of the present application; Figure 1 FIG. 5 shows a perspective view of a foldable electronic device in an intermediate hovering state according to some embodiments of the present application; and

[0041] Figure 4 Figure 1 shows an exploded view of a foldable electronic device according to some embodiments of the present application; Figure 1

[0042] Figure 5 Figure 2 shows a cross-sectional view of the foldable electronic device of Figure 1 at line A-A; Figure 1

[0043] Figure 6 Figure 3 shows a schematic structural diagram of a hinge mechanism according to some embodiments of the present application;

[0044] Figure 7 Figure 4 shows an assembly diagram of the hinge mechanism of Figure 3 with a first housing and a second housing; Figure 6

[0045] Figure 8 Figure 5 shows a partial schematic structural diagram of the hinge mechanism of Figure 3; Figure 6

[0046] Figure 9 Figure 6 shows an exploded view of a first swing arm and a first pivot shaft in the hinge mechanism of Figure 3; Figure 8

[0047] Figure 10 Figure 7 shows an enlarged view of a region A in the hinge mechanism of Figure 3; Figure 8

[0048] Figure 11 Figure 8 shows a cross-sectional view of the hinge mechanism of Figure 3 at line B-B; Figure 6

[0049] Figure 12 Figure 9 shows an enlarged view of a region B in the cross-sectional view of Figure 8; Figure 11

[0050] Figure 13 Figure 10 shows an exploded view of a first bearing in the hinge mechanism of Figure 3; Figure 12

[0051] Figure 14 Figure 11 shows a perspective view of a first limiting member in the hinge mechanism of Figure 3; Figure 8

[0052] Figure 15 Figure 12 shows a perspective view of a second limiting member in the hinge mechanism of Figure 3; Figure 8

[0053] Figure 16 Figure 13 shows a cross-sectional view of the hinge mechanism of Figure 3; Figure 8

[0054] Figure 17 Figure 14 shows a cross-sectional view of a base in the hinge mechanism of Figure 3; Figure 8

[0055] Figure 18 Figure 15 shows a schematic structural diagram of a hinge mechanism according to some embodiments of the present application;​​​​​​​​​​​​​Figure 8 An exploded view of the base in the hinge mechanism shown;

[0056] Figure 19 A partial structural schematic view of the hinge mechanism provided for some other embodiments of the present application;

[0057] Figure 20 A partial perspective view of the hinge mechanism provided for yet some other embodiments of the present application;

[0058] Figure 21 A Figure 20 An exploded view of the first fixing member and the driving rod in the hinge mechanism shown;

[0059] Figure 22 A Figure 20 An assembly schematic view of the first limiting member, the third limiting member and the driving rod in the hinge mechanism shown;

[0060] Figure 23 A sectional view of the hinge mechanism provided for yet some other embodiments of the present application;

[0061] Figure 24 A partial structural schematic view of the hinge mechanism provided for some other embodiments of the present application;

[0062] Figure 25 A Figure 24 An enlarged view of the C region of the hinge mechanism shown;

[0063] Figure 26 A partial structural schematic view of the hinge mechanism provided for yet some other embodiments of the present application.

[0064] Reference signs:

[0065] 100, foldable electronic device; 10, folding screen; 11, first part; 12, second part; 13, third part;

[0066] 20, supporting device; 21, first housing; 211, first middle frame; 212, first back cover; 22, second housing; 221, second middle frame; 222, second back cover; 23, hinge mechanism;

[0067] 23a, base; 23a1, bottom plate; 23a2, side wall plate; C, containing space; 23b, rotating shaft assembly; 230, rotating shaft support; 231, first swing arm; 2311, first shaft sleeve; 2311a, first matching hole; 2312, second shaft sleeve; 2312a, second matching hole;

[0068] 232, first rotating shaft; 2321, first plane; 2322, second plane;

[0069] 233、first damping mechanism; 2331、first damping member; 2331a、first damping surface; 2332、second damping member; 2332a、second damping surface; 2333、first elastic member;

[0070] 234、first limiting mechanism; 2341、first limiting member; 2341a、first surface; 2341b、second surface; 2341c、first mounting hole; 2342、second limiting member; 2342a、first end surface; 2342b、second end surface; 2342c、second mounting hole; 2342d、second outer peripheral surface; 2343、first adjusting structure; 2343a、first fitting part; D1、first extension end; D2、second extension end; D3、first abutting end; 2343b、second fitting part; D4、second abutting end;

[0071] 235、second swing arm; 236、second rotation shaft; 237、second damping mechanism; 2371、third damping member; 2371a、third damping surface; 2372、fourth damping member; 2372a、fourth damping surface; 2373、second elastic member;

[0072] 238、second limiting mechanism; 2381、third limiting member; 2382、fourth limiting member; 2383、second adjusting structure;

[0073] 239、first bearing; 2391、first static ring; 2392、first dynamic ring; 2393、rolling element; 2394、retainer; 23d、drive rod; 23d1、first end; 23d2、second end; G、first limiting groove; K、notch;

[0074] 23e、first driven rod; 23e1、guide surface; 23f、communication hole; 23f1、first orifice; 23f2、second orifice; 23g、groove part; 23g1、opening; 23g2、slot bottom wall; 23g3、slot side wall; 23h、decoration cover; 23h1、cover body; 23h2、flange; 23m、first fixing member; 23m1、mounting part; E1、cover plate; E2、side plate; E21、limiting hole; E3、first limiting protrusion; 23m2、fixing part; H0、clamping groove; H1、connecting plate; H2、first clamping plate; H21、first side edge; H22、second side edge; H3、second clamping plate; H31、third side edge; H32、fourth side edge; H4、first clamping part; H41、first clamping groove; H411、first assembly opening; H42、second clamping groove; H421、second assembly opening; H5、fitting groove; 23k、second fixing member; 23p、synchronization mechanism; 23p1、first gear; 23p2、second gear; 23p2、intermediate gear 23p2. 23t、second driven rod. DETAILED DESCRIPTION

[0075] With reference to the drawings and the examples described herein, it will be understood that the examples are intended in all respects to be illustrative rather than restrictive.

[0076] In the present application, the term "exemplary" or "for example" is used as erample, illustration, or description. Any embodiment or design solution described as "exemplary" or "for example" in the present application should not be interpreted as more preferred or superior to other embodiments or design solutions. In fact, the use of "exemplary" or "for example" is intended to present relevant concepts in a concrete manner.

[0077] In the present application, the terms "first", "second", "third", "fourth" are used only for descriptive purposes and should not be interpreted as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second", "third", "fourth" can explicitly or implicitly include one or more of the features.

[0078] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, "connecting" can be detachable connection or non-detachable connection, which can be direct connection or indirect connection through intermediate medium. Among them, "fixed connection" means that the relative position relationship after connection is unchanged. "Rotary connection" means that the relative rotation after connection is changed. "Sliding connection" means that the relative sliding after connection is changed.

[0079] In the description of the present application, the terms "vertical", "parallel" include the described situation and the approximate situation of the described situation, which is within the acceptable deviation range, wherein the acceptable deviation range is determined by the ordinary skilled in the art considering the measurement being discussed and the error related to the measurement of specific quantity (i.e. the limitation of measurement system). For example, "parallel" includes absolute parallel and approximate parallel, wherein the acceptable deviation range of approximate parallel can be within 5°, 8° or 10°; "vertical" includes absolute vertical and approximate vertical, wherein the acceptable deviation range of approximate vertical can also be within 5°, 8° or 10°.

[0080] For the convenience of understanding, before the hinge mechanism and the foldable electronic device in the present application are described in detail, the related terms involved in the present application are first described.

[0081] Axial direction: It can be understood as the direction of the center axis of the described component, which can be equivalent to the extension direction of the described component.

[0082] Circumferential: can be understood as the circumferential direction surrounding the axial direction.

[0083] Radial: can be understood as the direction perpendicular to the axial direction.

[0084] This application provides a foldable electronic device including a hinge mechanism. The hinge mechanism in this application embodiment, by setting a first limiting mechanism including a first limiting member, a second limiting member, and a first adjusting structure, allows adjustment of the distance between the first and second limiting members via the first adjusting structure, thereby adjusting the axial position of the first limiting member on the first rotating shaft. This allows adjustment of the damping force and torque curves of the first damping mechanism after the foldable electronic device is assembled (i.e., after the foldable electronic device is made into a complete unit), thereby improving the problem of damping force reduction caused by component wear in the foldable electronic device. This ensures that the foldable electronic device can remain in a suspended state after a period of use, and also maintains a smooth opening and closing feel, improving the user experience of the foldable electronic device.

[0085] The foldable electronic devices in this application include, but are not limited to, mobile phones, tablets, laptops, e-book readers, cameras, wearable devices, and home electronic devices. For ease of understanding, foldable screen mobile phones are used as an example in the various embodiments of this application, which should not be considered as a special limitation on the structural form of foldable electronic devices.

[0086] Please see Figure 1 , Figure 1 This is a perspective view of a foldable electronic device 100 in a flattened state, as provided in some embodiments of this application. The foldable electronic device 100 is approximately rectangular in shape when flattened. For ease of description of the embodiments below, an XYZ coordinate system is established for the foldable electronic device 100 in its flattened state, defining the width direction of the foldable electronic device 100 as the X-axis, the length direction as the Y-axis, and the thickness direction as the Z-axis. It is understood that the coordinate system setting of the foldable electronic device 100 can be flexibly set according to actual needs and is not specifically limited here. Furthermore, in other embodiments, the shape of the foldable electronic device 100 may also be a square plate, a circular plate, an elliptical plate, etc.

[0087] The foldable electronic device 100 includes a foldable screen 10 and a support device 20.

[0088] The foldable screen 10 is used to display images, videos, and other information. Specifically, the foldable screen 10 is a flexible display screen that can bend and deform between a folded state and an unfolded state. For example, the foldable screen 10 can be an organic light-emitting diode (OLED) display screen, a micro organic light-emitting diode (micro organic light-emitting diode) display screen, a quantum dot light-emitting diode (QLED) display screen, etc.

[0089] Please see Figure 1 The foldable screen 10 includes a first part 11, a second part 12, and a third part 13, with the third part 13 connected between the first part 11 and the second part 12. When the foldable electronic device 100 is in a flattened state, and the foldable screen 10 is also in a flattened state, the first part 11, the second part 12, and the third part 13 of the foldable screen 10 have the same orientation and are coplanar. In this state, a large-screen display can be achieved to provide users with richer information and a better user experience.

[0090] exist Figure 1 In the illustrated embodiment, when the foldable screen 10 is in a flattened state, the first part 11, the third part 13, and the second part 12 are arranged sequentially along the X-axis, allowing the foldable electronic device 100 to fold laterally. In other embodiments, when the foldable screen 10 is in an unfolded state, the first part 11, the third part 13, and the second part 12 may also be arranged sequentially along the Y-axis, allowing the foldable electronic device 100 to fold longitudinally.

[0091] Please see Figure 2 , Figure 2 for Figure 1 The diagram shows the structure of the foldable electronic device 100 in its folded state. In this state, the foldable screen 10 of the foldable electronic device 100 is also folded. Specifically, when the foldable screen 10 is folded, the first part 11 and the second part 12 are opposite each other, and the third part 13 is bent. At this time, the third part 10 can be U-shaped, teardrop-shaped, etc. In this state, the foldable electronic device 100 is small in size and easy to carry.

[0092] It should be noted that, Figure 2In the illustrated embodiment, when the foldable electronic device 100 is in the folded state, the support device 20 is protected outside the folding screen 10, and the folding screen 10 is not visible to the user. That is, the foldable electronic device 100 is an inner folding electronic device. In other embodiments, when the foldable electronic device 100 is in the folded state, the folding screen 10 can also be located outside the support device 20, and the folding screen 10 is visible to the user. That is, the foldable electronic device 100 is an outer folding electronic device.

[0093] To meet the user's use requirements of the foldable electronic device 100 in different scenarios, the foldable electronic device 100 also includes an intermediate hovering state. Please refer to Figure 3 , Figure 3 For Figure 1 the structure of the foldable electronic device 100 in the intermediate hovering state. When the foldable electronic device 100 is in the intermediate hovering state, the included angle between the first part 11 and the second part 12 of the folding screen 10 can be greater than or equal to 45 degrees and less than or equal to 160 degrees. For example, the included angle between the first part 11 and the second part 12 can be 45 degrees, 50 degrees, 55 degrees, 60 degrees, 65 degrees, 70 degrees, 75 degrees, 80 degrees, 85 degrees, 90 degrees, 100 degrees, 110 degrees, 120 degrees, 125 degrees, 130 degrees, 140 degrees, 145 degrees, 150 degrees, 155 degrees, 160 degrees, etc. In this state, the foldable electronic device 100 can be self-supported, freeing both hands.

[0094] For example, when the foldable electronic device 100 is in the intermediate hovering state, the user can use a part of the folding screen 10 (for example Figure 3 the first part 11 of the folding screen 10) for video calls, and use a part of the folding screen 10 (for example Figure 3 the second part 12 of the folding screen 10) to realize operations such as volume control, member addition, screen sharing, etc., which can improve the operation convenience of the foldable electronic device 100 and make communication more comfortable.

[0095] The support device 20 is used to carry the folding screen 10. Please refer to Figure 4 , Figure 4 For Figure 1 the exploded view of the foldable electronic device 100. The support device 20 includes a first housing 21, a second housing 22, and a hinge mechanism 23. The first housing 21 is used to carry the first part 11 of the folding screen 10, and the second housing 22 is used to carry the second part 12 of the folding screen 10. The hinge mechanism 23 is connected between the first housing 21 and the second housing 22, and can be used to carry the third part 13 of the folding screen 10.

[0096] In this embodiment, the support device 20 includes two housings, i.e., the first housing 21 and the second housing 22, and the support device 20 can be folded once. It can be understood that in other embodiments, the support device 20 can also include three, four or more housings. That is, the support device 20 can include at least one third housing in addition to the first housing 21 and the second housing 22. In this case, the first housing 21, the second housing 22 and the at least one third housing can be connected in sequence, and two adjacent housings can be connected by the hinge mechanism 23. In this way, the support device 20 can be folded multiple times (two times or more).

[0097] Please refer to Figure 5 , Figure 5 for Figure 1 the cross-sectional view of the foldable electronic device 100 at the A-A line. The first housing 21 can include a first middle frame 211 and a first back cover 212, and the first part 11 of the foldable screen 10 is carried on the first middle frame 211. The first back cover 212 is fixedly connected to the side of the first middle frame 211 away from the first part 11, and the first back cover 212 can be replaced by a display screen (such as an LCD display screen). The first housing 21 can be connected to the hinge mechanism 23 by means of the first middle frame 211, or can be connected to the hinge mechanism 23 by means of the first back cover 212.

[0098] Similarly, the second housing 22 can include a second middle frame 221 and a second back cover 222, and the second part 12 of the foldable screen 10 is carried on the second middle frame 221. The structure of the second housing 22 and the way the second housing 22 is connected to the hinge mechanism 23 can be designed with reference to the first housing 21 and the way the first housing 21 is connected to the hinge mechanism 23, and will not be described in detail here.

[0099] The hinge mechanism 23 is used to realize the relative rotation between the first housing 21 and the second housing 22, so as to support the switching of the foldable electronic device 100 between different states such as the flat state, the folded state, the intermediate hovering state and the like.

[0100] The hinge mechanism 23 usually includes a damping mechanism, and exerts a damping force on the first housing 21 and the second housing 22 through the damping mechanism, so that the foldable electronic device 100 can be kept in the flat state, the folded state and the intermediate hovering state. In addition, the damping mechanism can also provide a damping feel when the foldable electronic device 100 switches between different states.

[0101] However, the hinge mechanism in the related art has the following problems. On the one hand, due to manufacturing tolerances of parts or wear of parts caused by long-term use of the foldable electronic device, the damping force provided by the damping mechanism decreases, so that the foldable electronic device cannot be stably maintained in the intermediate hovering state after being used for a period of time. On the other hand, after the foldable electronic device is used in the flat state for a period of time, when adjusted to the intermediate hovering state, the tension of the folding screen is relatively large, which is usually greater than the damping force that the damping mechanism can provide in the intermediate hovering state, so that the foldable electronic device can only stably switch from the folded state to the intermediate hovering state, and cannot stably switch from the flat state to the intermediate hovering state. On the other hand, different users have different requirements for the damping feel of the foldable electronic device. For example, some users like a smooth damping feel with a small damping force, and some users like a damping feel with a large damping force. However, the damping force and the torsion force curve of the damping mechanism cannot be adjusted after the foldable electronic device is shipped, and thus the requirements of different users for different damping feels cannot be met.

[0102] To solve the above technical problems, please refer to Figure 6 , Figure 6 The structure of the hinge mechanism 23 provided by some embodiments of the present application is shown in the schematic view. Among them, Figure 6 The hinge mechanism 23 shown in the figure is in the flat state. The hinge mechanism 23 includes a base 23a and a rotating shaft assembly 23b. It can be understood that Figure 6 Only some components included in the hinge mechanism 23 are schematically shown, and the actual shape, actual size, actual position and actual structure of these components are not limited by Figure 6 .

[0103] The base 23a is used to realize the assembly of other parts in the hinge mechanism 23. Please refer to Figure 7 , Figure 7 The assembly schematic view of the hinge mechanism 23 in Figure 6 and the first shell 21 and the second shell 22. The base 23a includes a bottom plate 23a1 and a side wall plate 23a2. The bottom plate 23a1 is generally formed as a rectangular plate structure. The length direction of the bottom plate 23a1 is parallel to the Y-axis direction, the width direction is parallel to the X-axis direction, and the thickness direction is parallel to the Z-axis direction.

[0104] The side wall plate 23a2 is connected to the outer edge of the bottom plate 23a1. For example, please refer to Figure 7 , the side wall plate 23a2 can surround the outer edge of the bottom plate 23a1, and the space C is defined between the side wall plate 23a2 and the bottom plate 23a1, and at least part of the structure of the rotating shaft assembly 23b can be accommodated in the space C. In this way, part of the components of the hinge mechanism 23 can be hidden inside the base 23a, and the appearance of the foldable electronic device 100 can be improved.

[0105] The pivot assembly 23b is arranged on the base 23a. Please refer to Figure 6-7 In this embodiment, the pivot assembly 23b is two, which are arranged along the Y-axis direction. It can be understood that in other embodiments, the number of pivot assemblies 23b can also be one, or the number of pivot assemblies 23b can also be three, four, etc.

[0106] Please refer to Figure 8 , Figure 8 For Figure 6 The partial structure diagram of the hinge mechanism 23 is shown. The pivot assembly 23b includes a first swing arm 231, a first pivot shaft 232, a first damping mechanism 233, a first limiting mechanism 234, a second swing arm 235, a second pivot shaft 236, a second damping mechanism 237 and a second limiting mechanism 238.

[0107] The first swing arm 231 and the second swing arm 235 are arranged on opposite sides of the base 23a, and the first swing arm 231 and the second swing arm 235 can rotate relative to the base 23a between the unfolded position and the folded position. Specifically, the first swing arm 231 and the second swing arm 235 can be arranged on both sides of the width direction (that is, the X-axis direction) of the base 23a. Optionally, the first swing arm 231 and the second swing arm 235 are symmetrically arranged on both sides of the base 23a.

[0108] It can be understood that when the first swing arm 231 is in the unfolded position and the second swing arm 235 is in the unfolded position, the foldable electronic device 100, the support device 20 and the hinge mechanism 23 can be in an unfolded state; when the first swing arm 231 and the second swing arm 235 are in the folded position, the foldable electronic device 100, the support device 20 and the hinge mechanism 23 can be in a folded state. In addition, the "unfolded state" described in this application can include all states except the folded state. For example, the unfolded state can include the above-mentioned flat state and intermediate hovering state.

[0109] Please refer to Figure 7 , the hinge mechanism 23 can be connected to the first housing 21 by means of the first swing arm 231, and connected to the second housing 22 by means of the second swing arm 235. In this way, when the first housing 21 rotates under the action of an external force, the first swing arm 231 can rotate with the first housing 21 to realize the relative rotation between the first housing 21 and the base 23a. When the second housing 22 rotates under the action of an external force, the second swing arm 235 can rotate with the second housing 22 to realize the relative rotation between the second housing 22 and the base 23a, so that the foldable electronic device 100 can be switched between the unfolded state and the folded state.

[0110] Please refer to Figure 8The first swing arm 231 is connected to the first rotating shaft 232. Specifically, the first swing arm 231 can be rotatably connected to the base 23a by means of the first rotating shaft 232. In some embodiments, the first swing arm 231 is fixedly connected to the first rotating shaft 232, and the first rotating shaft 232 is rotatably connected to the base 23a. In other embodiments, the first swing arm 231 can be rotatably connected to the first rotating shaft 232, and the first rotating shaft 232 is fixedly connected to the base 23a, as long as the first swing arm 231 can rotate relative to the base 23a between the unfolded position and the folded position. In the present embodiment, the first swing arm 231 is fixedly connected to the first rotating shaft 232, and the first rotating shaft 232 is rotatably connected to the base 23a.

[0111] Please continue to refer to Figure 8 The second rotating shaft 236 is spaced apart from the first rotating shaft 232. For example, the axial direction of the second rotating shaft 236 is parallel to the axial direction of the first rotating shaft 232. The second swing arm 235 is connected to the second rotating shaft 236. The second swing arm 235 can be rotatably connected to the base 23a by means of the second rotating shaft 236. The manner in which the second swing arm 235 is connected to the second rotating shaft 236 can be the same as the manner in which the first swing arm 231 is connected to the first rotating shaft 232, which will not be described in detail here.

[0112] In some embodiments, please refer to Figure 8 The base 23a is provided with a rotating shaft support 230, and the first rotating shaft 232 and the second rotating shaft 236 are rotatably connected to the base 23a by means of the rotating shaft support 230.

[0113] Please refer to Figure 9 , Figure 9 is Figure 8 An exploded view of the first swing arm 231 and the first rotating shaft 232 in the hinge mechanism 23 shown in FIG. 11. The first swing arm 231 is provided with a first shaft sleeve 2311 and a second shaft sleeve 2312, and the first swing arm 231 can be fixedly connected to the first rotating shaft 232 by means of the first shaft sleeve 2311 and the second shaft sleeve 2312.

[0114] Specifically, please refer to Figure 9 The first shaft sleeve 2311 is provided with a first matching hole 2311a, and the second shaft sleeve 2312 is provided with a second matching hole 2312a. Both the first matching hole 2311a and the second matching hole 2312a are formed as flat position holes. The first rotating shaft 232 is provided with a first flat surface 2321 and a second flat surface 2322. The first flat surface 2321 is used to cooperate with the first matching hole 2311a, and the second flat surface 2322 is used to cooperate with the second matching hole 2312a. In this way, the first rotating shaft 232 and the first swing arm 231 can be limited relative to each other, so that the first rotating shaft 232 and the first swing arm 231 are fixed relative to each other, and relative rotation between the first swing arm 231 and the first rotating shaft 232 is avoided.

[0115] It can be understood that, in other embodiments, only one of the first fitting hole 2311a and the second fitting hole 2312a can be provided as a flat hole, and the other one of the first fitting hole 2311a and the second fitting hole 2312a can be provided as a circular hole or a hole of other shape. In this way, the relative fixation between the first rotating shaft 232 and the first swing arm 231 can also be achieved, and the relative rotation between the first swing arm 231 and the first rotating shaft 232 can be avoided.

[0116] In some embodiments, the second swing arm 235 has the same structure as the first swing arm 231, and the second rotating shaft 236 has the same structure as the first rotating shaft 232. The second rotating shaft 236 is connected to the second swing arm 235 in the same way as the first rotating shaft 232 is connected to the first swing arm 231, and will not be described in detail here.

[0117] The damping mechanism in the embodiments of the present application includes a first damping mechanism 233 and a second damping mechanism 237. The first damping mechanism 233 is used to apply damping to the first swing arm 231. Please refer to Figure 8 , the first damping mechanism 233 can be arranged between the first swing arm 231 and the first rotating shaft 232, and when the first swing arm 231 drives the first rotating shaft 232 to rotate relative to the base 23a, the first damping mechanism 233 is used to apply damping to the first swing arm 231. Since the first housing 21 is relatively fixed with the first swing arm 231, the first damping mechanism 233 can be used to apply damping to the first housing 21.

[0118] In some embodiments, please refer to Figure 8 , the first damping mechanism 233 includes a first damping member 2331, a second damping member 2332, and a first elastic member 2333. The first damping member 2331 includes a first damping surface 2331a, and is fixedly connected to the first swing arm 231 and can rotate synchronously with the first swing arm 231.

[0119] In this embodiment, the first damping surface 2331a is formed on the second shaft sleeve 2312. That is, the second shaft sleeve 2312 is formed as the first damping member 2331. In other embodiments, the first damping member 2331 can also be fixedly connected to the second shaft sleeve 2312.

[0120] Please continue to refer to Figure 8The second damping member 2332 is sleeved on the first rotating shaft 232 and can move along the axial direction of the first rotating shaft 232. Specifically, the first rotating shaft 232 is rotatably connected to the second damping member 2332. That is, when the first swing arm 231 rotates synchronously with the first rotating shaft 232, the second damping member 2332 does not rotate with the first rotating shaft 232. The second damping member 2332 includes a second damping surface 2332a, which is used to cooperate with the first damping surface 2331a to provide a damping force.

[0121] Please refer to Figure 8 The first elastic member 2333 is arranged on the side of the second damping member 2332 away from the first damping member 2331, and the first elastic member 2333 is always in a compressed energy storage state. In this way, the second damping member 2332 can be subjected to an elastic force directed to the first damping member 2331 by the first elastic member 2333, so that the first damping surface 2331a of the first damping member 2331 and the second damping surface 2332a of the second damping member 2332 can be kept in abutment. Wherein, “abutment” means that the two are in contact and have a certain extrusion force between each other.

[0122] Specifically, when the first swing arm 231 rotates relative to the base 23a under the action of an external force, the first rotating shaft 232 rotates with the first swing arm 231. Since the first damping member 2331 is fixed relative to the first swing arm 231, the first damping member 2331 can rotate synchronously with the first swing arm 231, and the second damping member 2332 does not rotate with the first rotating shaft 232. Therefore, when the first swing arm 231 rotates, the first damping member 2331 rotates relative to the second damping member 2332, and a frictional force is generated between the first damping surface 2331a and the second damping surface 2332a. The frictional force can generate an unfolding force or a closing force for the first swing arm 231, so as to keep the hinge mechanism 23 in the unfolded state, the folded state or the intermediate hovering state. In addition, the above-mentioned frictional force can also form a damping hand feeling, which is beneficial to improve the user's experience.

[0123] It should be noted that the “unfolding force” described in the embodiments of the present application refers to the force that can drive the first swing arm 231 to rotate from the folded position to the unfolded position. Correspondingly, the “closing force” described in the embodiments of the present application refers to the force that can drive the first swing arm 231 to rotate from the unfolded position to the folded position.

[0124] In some embodiments, please refer to Figure 8Both the first damping surface 2331a and the second damping surface 2332a can be formed as cam surfaces. That is, both the first damping element 2331 and the second damping element 2332 are cams. It is understood that in other embodiments, the first damping surface 2331a and the second damping surface 2332a can also be formed as planes. In this case, the first damping surface 2331a and the second damping surface 2332a can be made of a material with a high coefficient of friction. This also ensures the frictional force between the first damping surface 2331a and the second damping surface 2332a.

[0125] The first elastic element 2333 can be made of elastic materials such as a coil spring, disc spring, rubber, or silicone. Figure 8 In the illustrated embodiment, the first elastic element 2333 is a helical spring. Helical springs have high elasticity, superior stability, and a long lifespan, ensuring the structural stability of the pivot assembly 23b and extending the service life of the hinge mechanism 23.

[0126] The second damping mechanism 237 is used to apply damping to the second swing arm 235. The second damping mechanism 237 can be disposed between the second rotating shaft 236 and the second swing arm 235. For details, please refer to [link / reference]. Figure 8 The second damping mechanism 237 includes a third damping element 2371, a fourth damping element 2372, and a second elastic element 2373. The structure of the third damping element 2371 can be the same as that of the first damping element 2371, the structure of the fourth damping element 2372 can be the same as that of the second damping element 2372, and the structure of the second elastic element 2373 can be the same as that of the first elastic element 2373. Furthermore, the working principle of the second damping mechanism 237 is the same as that of the first damping mechanism 233, and will not be described further here.

[0127] Additionally, in some designs, please refer to Figure 10 The second damping element 2332 in the first damping mechanism 233 and the fourth damping element 2372 in the second damping mechanism 237 can be connected. In this way, the damping of the first rotating shaft 232 and the second rotating shaft 236 can be symmetrical, and the rotation of the second damping element 2332 around the central axis of the first rotating shaft 232 can be prevented, while the rotation of the fourth damping element 2372 around the central axis of the second rotating shaft 236 can also be prevented.

[0128] The first limiting mechanism 234 can be used to limit the first damping mechanism 233 and can adjust the damping force of the first damping mechanism 233. Please refer to [link / reference]. Figure 10 , Figure 8 for Figure 10 The enlarged view of the hinge mechanism 23 in region A is shown. The first limiting mechanism 234 includes a first limiting member 2341, a second limiting member 2342, and a first adjusting structure 2343.

[0129] Please see Figure 11 The first limiting member 2341 includes a first surface 2341a and a second surface 2341b opposite to each other. The first limiting member 2341 has a first mounting hole 2341c, with both ends of the first mounting hole 2341c penetrating through the first surface 2341a and the second surface 2341b, respectively. The first limiting member 2341 can be assembled to the first rotating shaft 232 via the first mounting hole 2341c.

[0130] Specifically, the first rotating shaft 232 passes through the first mounting hole 2341c. For example, the first mounting hole 2341c is a circular hole, and the first rotating shaft 232 is rotatably connected to it. Thus, when the first swing arm 231 rotates relative to the base 23a, the first rotating shaft 232 can rotate relative to the first limiting member 2341, and the first limiting member 2341 will not rotate with the rotation of the first swing arm 231. This allows the movement of the first swing arm 231 and the movement of the first limiting member 2341 to be independent and unaffected by each other. In other words, there is no linkage between the first swing arm 231 and the first limiting member 2341.

[0131] Please see Figure 11 , Figure 6 for Figure 12 The cross-sectional view of the hinge mechanism 23 shown is along line BB. The first limiting member 2341 is located on the side of the first elastic member 2333 opposite to the second damping member 2332. For details, please refer to [link / reference]. Figure 12 , Figure 11 for Figure 12 An enlarged view of region B in the cross-sectional view shown. The second surface 2341b of the first limiting member 2341 faces the first elastic member 2333, and the first limiting member 2341 abuts against the first elastic member 2333 by means of the second surface 2341b.

[0132] It is understandable that when the first damping mechanism 233 includes other components located on the side of the first elastic member 2333 away from the second damping member 2332 in addition to the first damping member 2331, the second damping member 2332 and the first elastic member 2333, the first limiting member 2341 can also abut against the above-mentioned other components, as long as it can ensure that the first limiting member 2341 abuts against the first damping mechanism 233.

[0133] Please continue reading. Figure 12 The second limiting member 2342 includes a first end face 2342a and a second end face 2342b opposite to each other. The second limiting member 2342 is provided with a second mounting hole 2342c, and the two ends of the second mounting hole 2342c pass through the first end face 2342a and the second end face 2342b respectively. The second limiting member 2342 can be assembled to the first rotating shaft 232 through the second mounting hole 2342c.

[0134] Specifically, the first rotating shaft 232 can be arranged in the first mounting hole 2341c. In some embodiments, the second mounting hole 2342c is a circular hole, and the first rotating shaft 232 is rotatably connected to the second mounting hole 2342c. In this way, when the first swing arm 231 rotates relative to the base 23a, the first rotating shaft 232 can rotate relative to the second limiting member 2342, and the second limiting member 2342 does not rotate with the rotation of the first swing arm 231, so that the movement of the first swing arm 231 and the movement of the second limiting member 2342 are independent of each other and do not affect each other. That is, the first swing arm 231 and the second limiting member 2342 are not linked.

[0135] It can be understood that in other embodiments, when the first rotating shaft 232 is fixedly connected to the base 23a and the first swing arm 231 is rotatably connected to the first rotating shaft 232, since the first rotating shaft 232 is always fixed relative to the base 23a, when the first rotating shaft 232 is rotatably connected to the first limiting member 2341 and the second limiting member 2342, the first limiting member 2341 and the second limiting member 2342 will not rotate with the rotation of the first swing arm 231, so that the first swing arm 231 and the first limiting member 2341 are not linked, and the first swing arm 231 and the second limiting member 2342 are not linked.

[0136] Please refer to Figure 10-12 , the second limiting member 2342 is located on the side of the first limiting member 2341 away from the first elastic member 2333. The first surface 2341a of the first limiting member 2341 is arranged opposite the first end surface 2342a of the second limiting member 2342.

[0137] Please refer to Figure 11 , the first adjusting structure 2343 is arranged between the first limiting member 2341 and the second limiting member 2342. The first adjusting structure 2343 can be used to adjust the distance between the first limiting member 2341 and the second limiting member 2342, so as to adjust the position of the first limiting member 2341 in the axial direction of the first rotating shaft 232. The distance between the first limiting member 2341 and the second limiting member 2342 refers to the distance between the first surface 2341a of the first limiting member 2341 and the first end surface 2342a of the second limiting member 2342.

[0138] When the distance between the first limiting member 2341 and the second limiting member 2342 changes, the first limiting member 2341 can move in the axial direction of the first rotating shaft 232 to change the position of the first limiting member 2341 in the axial direction of the first rotating shaft 232, thereby changing the damping force and the torque curve of the first damping mechanism 233.

[0139] Specifically, after the position of the first limiting member 2341 changes in the axial direction of the first rotating shaft 232, the compression amount of the first elastic member 2333 changes compared to before the position of the first limiting member 2341 changes in the axial direction of the first rotating shaft 232, so that the force exerted by the first elastic member 2333 on the second damping member 2332 changes in the direction of the first damping member 2331, thereby changing the friction between the first damping member 2331 and the second damping member 2332, and achieving adjustment of the damping force and the torque curve of the first damping mechanism 233.

[0140] Please refer to Figure 12 and Figure 11 When the distance between the first limiting member 2341 and the second limiting member 2342 increases, that is, when the first limiting member 2341 moves towards the first elastic member 2333, the first elastic member 2333 is further compressed at this time, and the compression amount of the first elastic member 2333 increases. In this way, the force between the second damping member 2332 and the first damping member 2331 can be increased, the friction between the second damping member 2332 and the first damping member 2331 can be increased, and thus the damping force provided by the first damping mechanism 233 can be increased.

[0141] For example, after the foldable electronic device 100 is used for a period of time, wear occurs between the parts of the first damping mechanism 233, such as the first damping member 2331 and the second damping member 2332, compared to before the wear, the friction between the first damping member 2331 and the second damping member 2332 decreases, causing the foldable electronic device 100 to be unable to stably maintain the intermediate hovering state. In this case, the position of the first limiting member 2341 in the axial direction of the first rotating shaft 232 can be adjusted to increase the compression amount of the first elastic member 2333, so as to increase the friction between the first damping member 2331 and the second damping member 2332, and thus the foldable electronic device 100 can be stably maintained in the intermediate hovering state. Thus, the service life of the foldable electronic device 100 and the hinge mechanism 23 can be prolonged, the use cost can be reduced, and the user experience can be improved.

[0142] In addition, the position of the first limiting member 2341 in the axial direction of the first rotating shaft 232 can also be adjusted to increase the friction between the first damping member 2331 and the second damping member 2332, and make the friction greater than the tension generated after the foldable screen 10 is used flat for a period of time. In this way, the foldable electronic device 100 not only can stably switch from the folded state to the intermediate hovering state, but also can stably switch from the flat state to the intermediate hovering state, and the user experience can be further improved. In addition, the position of the first limiting member 2341 in the axial direction of the first rotating shaft 232 can also be changed to increase the friction between the first damping member 2331 and the second damping member 2332, so as to enhance the damping feel and meet the requirements of users for the damping feel.

[0143] Please continue to refer to Figure 12 and Figure 12 When the distance between the first limiting member 2341 and the second limiting member 2342 decreases, that is, when the first limiting member 2341 moves in a direction away from the first elastic member 2333, the compression amount of the first elastic member 2333 is released at this time, and the compression amount of the first elastic member 2333 decreases. In this way, the force between the second damping member 2332 and the first damping member 2331 can be reduced, the friction between the second damping member 2332 and the first damping member 2331 can be reduced, and thus the damping force provided by the first damping mechanism 233 can be reduced.

[0144] For example, by adjusting the position of the first limiting member 2341 in the axial direction of the first rotating shaft 232, the compression amount of the first elastic member 2333 can be reduced to reduce the friction between the first damping member 2331 and the second damping member 2332, and a smoother damping feel can be achieved.

[0145] Please refer to Figure 12 The first adjusting structure 2343 includes a first cooperating part 2343a and a second cooperating part 2343b that cooperate with each other, the first cooperating part 2343a is fixedly connected to the first surface 2341a of the first limiting member 2341, and the second cooperating part 2343b is fixedly connected to the first end surface 2342a of the second limiting member 2342.

[0146] The first cooperating part 2343a and the second cooperating part 2343b have a plurality of cooperating positions, and the position of the first limiting member 2341 in the axial direction of the first rotating shaft 232 is different at different cooperating positions. In this way, the position of the first limiting member 2341 in the axial direction of the first rotating shaft 232 can be changed by changing the cooperating position between the first cooperating part 2343a and the second cooperating part 2343b, and the damping force and torque curve of the first damping mechanism 233 can be adjusted.

[0147] In some embodiments, the first limiting member 2341 and the second limiting member 2342 can be relatively rotated about a first rotating axis to switch the first cooperating part 2343a and the second cooperating part 2343b between a plurality of different cooperating positions. The first rotating axis is parallel to the axial direction of the first rotating shaft 232. In this way, by rotating the first limiting member 2341 and / or the second limiting member 2342, the cooperating position between the first cooperating part 2343a and the second cooperating part 2343b can be switched to a target cooperating position, so as to adjust the first limiting member 2341 to a target position, and thus the damping force and torque curve of the first damping mechanism 233 can be adjusted. The structure is simple, ingenious, and has a small volume, which can reduce the occupied space of the first adjusting structure 2343.

[0148] Specifically, in this embodiment, the second limiting member 2342 can rotate relative to the base 23a about the first rotation axis, and the first limiting member 2341 cannot rotate relative to the base 23a about the first rotation axis. In this way, the switching of the matching position between the first matching portion 2343a and the second matching portion 2343b can be realized by rotating the second limiting member 2342, and the adjustment of the position of the first limiting member 2341 in the axial direction of the first rotating shaft 232 can be realized.

[0149] Moreover, since the second limiting member 2342 is not linked with the first swing arm 231, that is, the second limiting member 2342 does not rotate with the rotation of the first swing arm 231, the matching position between the first matching portion 2343a and the second matching portion 2343b will not be switched with the rotation of the first swing arm 231, so that the rotation of the first swing arm 231 will not affect the position of the first limiting member 2341 in the axial direction of the first rotating shaft 232. In this way, after the matching position between the first matching portion 2343a and the second matching portion 2343b is switched to the target matching position, the first matching portion 2343a and the second matching portion 2343b can be kept at the target position, and the first limiting member 2341 can be kept at the target position, so that the stability of the folding process of the hinge mechanism 23 and the foldable electronic device 100 can be improved, and the opening and closing feeling of the foldable electronic device 100 can be ensured.

[0150] In some embodiments, please refer to Figure 10-12 , the first matching portion 2343a and the second matching portion 2343b are in abutting matching. In this way, the matching stability between the first matching portion 2343a and the second matching portion 2343b can be improved, and when the first matching portion 2343a and the second matching portion 2343b are in the target matching position, the first limiting member 2341 and the second limiting member 2342 can be kept relatively static by means of the first adjusting structure 2343, so that the distance between the first limiting member 2341 and the second limiting member 2342 can be prevented from changing, which is beneficial to keeping the first limiting member 2341 at the target position, and the stability of the folding process of the hinge mechanism 23 and the foldable electronic device 100 can be further improved.

[0151] On the basis of any of the above embodiments, the position of the second limiting member 2342 in the axial direction of the first rotating shaft 232 is fixed. That is, in the axial direction of the first rotating shaft 232, the second limiting member 2342 is relatively fixed with the base 23a. Since the second surface 2341b of the first limiting member 2341 is in abutment with the first elastic member 2333, the first elastic member 2333 always applies a force to the first limiting member 2341 that is directed towards the second limiting member 2342, so that the first limiting member 2341 always has a tendency to move towards the second limiting member 2342. In this way, after the position of the second limiting member 2342 in the axial direction of the first rotating shaft 232 is fixed, when the first and second cooperation portions 2343a and 2343b are in the target cooperation position, the position of the first limiting member 2341 in the axial direction of the first rotating shaft 232 can be guaranteed to be fixed, the first limiting member 2341 can be kept in the target position, and the stability of the folding process of the hinge mechanism 23 and the foldable electronic device 100 can be further improved.

[0152] In addition, after the position of the second limiting member 2342 in the axial direction of the first rotating shaft 232 is fixed, when the distance between the first limiting member 2341 and the second limiting member 2342 changes, the position of the first limiting member 2341 in the axial direction of the first rotating shaft 232 can be guaranteed to change. In this case, the amount of change in the distance between the first limiting member 2341 and the second limiting member 2342 is the amount of displacement of the first limiting member 2341 in the axial direction of the first rotating shaft 232, which can reduce the difficulty of adjusting the position of the first limiting member 2341, and further reduce the difficulty of adjusting the compression amount of the first elastic member 2333.

[0153] In some embodiments, as shown in Figure 13 , the side of the second limiting member 2342 away from the first limiting member 2341 is provided with a first bearing 239, and in the axial direction of the first rotating shaft 232, the two ends of the first bearing 239 are in abutment with the second limiting member 2342 and the first shaft sleeve 2311 respectively. Since the first shaft sleeve 2311 is fixedly connected to the first rotating shaft 232, that is, the position of the first shaft sleeve 2311 in the axial direction of the first rotating shaft 232 is fixed, the first shaft sleeve 2311 and the first bearing 239 can jointly limit the axial side of the second limiting member 2342. In this way, the position of the second limiting member 2342 in the axial direction of the first rotating shaft 232 can be fixed, and the structure is simple and easy to implement.

[0154] On this basis, as shown in Figure 13 , Figure 12 , it is an exploded view of the first bearing 239 in the hinge mechanism 23 shown in Figure 13 . The first bearing 239 includes a first static ring 2391, a first dynamic ring 2392, and rolling elements 2393. In some embodiments, the first bearing 239 can be a thrust ball bearing.

[0155] The first static ring 2391 is annular, and the first dynamic ring 2392 is also annular, and the first dynamic ring 2392 is rotatably arranged at an axial side of the first static ring 2391. The rolling body 2393 is arranged between the first static ring 2391 and the first dynamic ring 2392. Specifically, the rolling body 2393 can be fixedly connected to the first static ring 2391 or the first dynamic ring 2392. The rolling body 2393 is a plurality of rolling bodies, and the plurality of rolling bodies 2393 are arranged at intervals in the circumferential direction of the first static ring 2391. The rolling body 2393 can be used to reduce the friction between the first static ring 2391 and the first dynamic ring 2392. The rolling body 2393 can be a sphere or a cylinder.

[0156] In order to facilitate the fixation of the rolling body 2393, please refer to Figure 12 The first bearing 239 further comprises a retainer 2394, and the rolling body 2393 is fixedly connected to the retainer 2394 and is fixedly connected to the first static ring 2391 or the first dynamic ring 2392 through the retainer 2394. It can be understood that in other embodiments, the rolling body 2393 can also not be arranged between the first dynamic ring 2392 and the first static ring 2391.

[0157] Please refer to Figure 14 The first static ring 2391 can be sleeved on the first rotating shaft 232 and abut against the first shaft sleeve 2311. Exemplarily, the first rotating shaft 232 is rotatably connected to the first static ring 2391. In this way, the first static ring 2391 does not rotate with the first swing arm 231. That is, the first static ring 2391 is not linked with the first swing arm 231. The first dynamic ring 2392 is located at a side of the first static ring 2391 facing the second limiting piece 2342. The first dynamic ring 2392 can abut against the second limiting piece 2342.

[0158] Since the first static ring 2391 does not rotate with the first swing arm 231, when the first swing arm 231 rotates relative to the base 23a, the second limiting piece 2342 can be prevented from rotating with the first swing arm 231, and thus the position of the first limiting piece 2341 in the axial direction of the first rotating shaft 232 can be prevented from changing with the rotation of the first swing arm 231. Therefore, the damping force and the torsional force curve of the first damping mechanism 233 can be prevented from changing due to the change of the position of the first limiting piece 2341 when the first swing arm 231 rotates, and the stability of the folding process of the hinge mechanism 23 and the foldable electronic device 100 can be improved.

[0159] In other embodiments, the second limiting member 2342 can also be fixed relative to the base 23a. Specifically, the second limiting member 2342 can be fixedly connected to the base 23a, or can be fixedly connected to other components such as the shaft support 230, as long as the second limiting member 2342 is fixed relative to the base 23a. In this case, the second limiting member 2342 can or can not be sleeved on the second shaft 236. In this way, the position of the second limiting member 2342 in the axial direction of the first shaft 232 can also be fixed, so that the position of the second limiting member 2342 in the axial direction of the first shaft 232 is prevented from changing.

[0160] In some embodiments, please refer to Figure 14 , Figure 8 for Figure 14 the perspective view of the first limiting member 2341 in the hinge mechanism 23 shown in FIG. 23. The first fitting portion 2343a protrudes from the first surface 2341a. The first fitting portion 2343a includes a first abutting end D3, which is an end of the first fitting portion 2343a away from the first surface 2341a. The first abutting end D3 faces the second fitting portion 2343b.

[0161] The first fitting portion 2343a extends along the circumference of a first circle, the center of which is located on the first rotation axis (i.e., the rotation axis of the first limiting member 2341 or the second limiting member 2342). For example, the extension path of the first fitting portion 2343a is in the shape of an arc.

[0162] Please continue to refer to Figure 15 , the first fitting portion 2343a includes a first extension end D1 and a second extension end D2 opposite to each other on the extension path thereof. In the direction from the first extension end D1 to the second extension end D2, the thickness of the first fitting portion 2343a gradually increases. In this embodiment, the "thickness of the first fitting portion 2343a" refers to the distance between the end face of the first abutting end D3 and the first surface 2341a.

[0163] Please refer to Figure 15 , Figure 8 for Figure 14 the perspective view of the second limiting member 2342 in the hinge mechanism 23 shown in FIG. 23. The second fitting portion 2343b protrudes from the first end face 2342a of the second limiting member 2342. The second fitting portion 2343b includes a second abutting end D4 for abutting against the first fitting portion 2343a, and the end face of the second abutting end D4 is formed as an arc surface that arches toward the first fitting portion 2343a. That is, the second abutting end D4 is formed as an arc surface that arches toward the direction away from the first end face 2342a.

[0164] Exemplarily, the end face of the second abutting end D4 can be a circular arc face, an elliptical arc face, or the like. The second matching portion 2343b can be spherical, ellipsoidal, or a spherical cap, or the like. This structure is simple, convenient to process, and is conducive to reducing the sliding friction between the second matching portion 2343b and the first matching portion 2343a, and can reduce the difficulty of relative rotation of the first limiting member 2341 and the second limiting member 2342.

[0165] Specifically, when the first limiting member 2341 and the second limiting member 2342 rotate relative to each other, the second matching portion 2343b can slide along the end face of the first abutting end D3 of the first matching portion 2343a. That is, the second matching portion 2343b can climb and descend along the first abutting end D3 of the first matching portion 2343a. In this way, when the second limiting member 2342 rotates relative to the first limiting member 2341, so that the second matching portion 2343b slides from the first extending end D1 to the second extending end D2 of the first matching portion 2343a, the second matching portion 2343b can climb along the first abutting end D3 of the first matching portion 2343a, the distance between the first limiting member 2341 and the second limiting member 2342 increases, and the first limiting member 2341 can move towards the first damping mechanism 233.

[0166] When the second limiting member 2342 rotates relative to the first limiting member 2341, so that the second matching portion 2343b slides from the second extending end D2 to the first extending end D1 of the first matching portion 2343a, at this time, the second matching portion 2343b can descend along the first abutting end D3 of the first matching portion 2343a, the distance between the first limiting member 2341 and the second limiting member 2342 decreases, and the first limiting member 2341 can move away from the first damping mechanism 233. Thus, the position of the first limiting member 2341 in the axial direction of the first rotating shaft 232 can be changed, and the compression amount of the first elastic member 2333 can be changed, so as to adjust the damping force and the torque curve of the first damping mechanism 233.

[0167] In some embodiments, the first matching portion 2343a is a plurality of first matching portions 2343a, and the plurality of first matching portions 2343a are arranged at intervals in the circumferential direction of the first circumference. Exemplarily, in the embodiment shown in Figure 15 , the first matching portion 2343a is three. It can be understood that in other embodiments, the number of first matching portions 2343a can also be two, four, five, or the like. On this basis, please refer to Figure 14 , the second matching portion 2343b is a plurality of second matching portions 2343b, and the plurality of second matching portions 2343b correspond to the plurality of first matching portions 2343a one by one. In this way, the cooperation stability between the first matching portion 2343a and the second matching portion 2343b can be improved, and the first limiting member 2341 and the second limiting member 2342 can be prevented from shaking.

[0168] It can be understood that in other embodiments, the first matching part 2343a can be fixedly connected to the second limiting part 2342, and the second matching part 2343b can be fixedly connected to the first limiting part 2341. In this case, the thickness of the first matching part 2343a refers to the distance between the end face of the first abutting end D3 of the first matching part 2343a and the first end face 2342a of the second limiting part 2342. In addition, in other embodiments, the structure of the second matching part 2343b can also be the same as that of the first matching part 2343a, as long as the first matching part 2343a and the second matching part 2343b can change the distance between the first limiting part 2341 and the second limiting part 2342 when switching between different matching positions.

[0169] In some embodiments, in order to further reduce the sliding friction between the first matching part 2343a and the second matching part 2343b, please refer to Figure 10 , the end face of the first abutting end D3 of the first matching part 2343a is formed as a curved surface.

[0170] Please refer back to Figure 10 , similar to the first limiting mechanism 234, the second limiting mechanism 238 can include a third limiting part 2381, a fourth limiting part 2382 and a second adjusting structure 2383. The second limiting part 2342 is arranged on the second rotating shaft 236 and abuts against the second damping mechanism 237. The third limiting part 2381 can move in the axial direction of the second rotating shaft 236 to adjust the damping force of the second damping mechanism 237. The fourth limiting part 2382 is arranged on the side of the third limiting part 2381 away from the second damping mechanism 237. The second adjusting structure 2383 is arranged between the third limiting part 2381 and the fourth limiting part 2382, and is used to adjust the distance between the third limiting part 2381 and the fourth limiting part 2382, so as to adjust the position of the third limiting part 2381 in the axial direction of the second rotating shaft 236.

[0171] Among them, the structure of the third limiting part 2381 can be designed with reference to the structure of the first limiting part 2341, the structure of the fourth limiting part 2382 can be designed with reference to the structure of the second limiting part 2342, and the structure of the second adjusting structure 2383 can be designed with reference to the structure of the first adjusting structure 2343. In addition, the working principle of the second limiting mechanism 238 is the same as that of the first limiting mechanism 234, which will not be described in detail here.

[0172] In some designs, please refer to Figure 16The first limiting member 2341 in the first limiting mechanism 234 and the third limiting member 2381 in the second limiting mechanism 238 can be connected. In this way, the damping symmetry of the first rotating shaft 232 and the second rotating shaft 236 can be achieved, and the first limiting member 2341 can be prevented from rotating around the central axis of the first rotating shaft 232, and the third limiting member 2381 can be prevented from rotating around the central axis of the second rotating shaft 236, so as to ensure the cooperation stability of the first limiting member 2341 and the second limiting member 2342, and the cooperation stability of the third limiting member 2381 and the fourth limiting member 2382.

[0173] In order to facilitate the relative rotation between the second limiting member 2342 and the first limiting member 2341, please refer to Figure 16 , Figure 8 As shown in the cross-sectional view of the hinge mechanism 23. Figure 16 The hinge mechanism 23 further comprises a driving rod 23d for driving the second limiting member 2342 to rotate around the first rotation axis.

[0174] In some embodiments, in order to facilitate the cooperation between the second limiting member 2342 and the driving rod 23d, please refer to Figure 15 and in combination with Figure 17 The first driven rod 23e is provided on the second limiting member 2342. The first driven rod 23e is in a strip shape. Specifically, the second limiting member 2342 comprises a second outer peripheral surface 2342d connected between the first end surface 2342a and the second end surface 2342b, the first driven rod 23e is fixedly connected to the second outer peripheral surface 2342d, and the first driven rod 23e is located on the circumferential outer side of the second limiting member 2342.

[0175] In some embodiments, the first driven rod 23e and the second limiting member 2342 are an integral molded part. In this way, it is beneficial to simplify the assembly process of the second limiting member 2342 and the first driven rod 23e, and at the same time, it is beneficial to improve the connection strength between the first driven rod 23e and the second limiting member 2342. Of course, in other embodiments, the first driven rod 23e and the second limiting member 2342 can also be connected by welding or the like.

[0176] Please refer to Figure 17 , Figure 8 As shown in the cross-sectional view of the base 23a in the hinge mechanism 23. Figure 16 The base 23a is provided with a communication hole 23f for communicating the accommodation space C inside the base 23a and the external space of the base 23a. Specifically, the communication hole 23f comprises a first aperture 23f1 and a second aperture 23f2, the first aperture 23f1 communicates with the accommodation space C inside the base 23a, the second aperture 23f2 communicates with the first aperture 23f1, and the second aperture 23f2 communicates with the external space of the base 23a.

[0177] The driving rod 23d is arranged in the through hole 23f and can be locked in the through hole 23f. Please refer to Figure 16 The driving rod 23d is in a strip shape, and the driving rod 23d includes opposite first and second end portions 23d1 and 23d2. The first end portion 23d1 is arranged to pass out of the first aperture 23f1 and is connected with the first driven rod 23e. That is, the first end portion 23d1 passes into the accommodating space C of the base 23a from the first aperture 23f1. The second end portion 23d2 of the driving rod 23d is exposed to the second aperture 23f2. That is, the second end portion 23d2 of the driving rod 23d can be seen from the second aperture 23f2 of the through hole 23f. Specifically, the second end portion 23d2 of the driving rod 23d can be located on a side of the second aperture 23f2 away from the first aperture 23f1, can be flush with the second aperture 23f2, or can be located between the second aperture 23f2 and the first aperture 23f1, as long as the second end portion 23d2 of the driving rod 23d can be exposed to the second aperture 23f2.

[0178] In some embodiments, please refer to Figure 16 The driving rod 23d is arranged in the through hole 23f and can be locked in the through hole 23f. Please refer to Figure 16 The first rotation axis is parallel to the Y-axis direction, and the first direction is parallel to the Z-axis direction. In this case, the through hole 23f can be arranged on the bottom plate 23a1 of the base 23a, and the central axis of the through hole 23f is parallel to the first direction. It can be understood that in other embodiments, the first direction can also be parallel to the X-axis direction, and in this case, the through hole 23f can be arranged on the side wall 23a2 of the base 23a, and the central axis of the through hole 23f is parallel to the first direction.

[0179] Specifically, the driving rod 23d has a plurality of locking positions in the communication hole 23f, and the driving rod 23d can be switched between the plurality of locking positions when the driving rod 23d moves in the first direction. In this way, the driving rod 23d can be moved in the first direction, the second limiting piece 2342 is driven to rotate around the first rotation axis by the driving rod 23d, and then the position of the first limiting piece 2341 in the axial direction of the first rotating shaft 232 can be adjusted, so as to adjust the damping force and torsional force curve of the first damping mechanism 233. At the same time, since the second end 23d2 of the driving rod 23d is exposed to the second aperture 23f2, the driving rod 23d can be moved in the first direction from the outside of the base 23a. After the whole machine of the foldable electronic equipment 100 is assembled (that is, the foldable electronic equipment 100 is made into a whole machine), the adjustment of the position of the first limiting piece 2341 in the axial direction of the first rotating shaft 232 can be realized without disassembling the foldable electronic equipment 100, which effectively reduces the adjustment difficulty of the damping force and torsional force curve of the first damping mechanism 233, and the structure is simple, ingenious, small in space occupation, and easy to realize.

[0180] For example, please refer to Figure 16 When the driving rod 23d moves in the first direction towards the inside of the base 23a, the second limiting piece 2342 rotates around the first rotation axis in the first rotation direction r1 in the Figure 16 At this time, the second matching part 2343b can slide from the first extension end D1 of the first matching part 2343a to the second extension end D2 of the first matching part 2343a, the distance between the first limiting piece 2341 and the second limiting piece 2342 increases, and the first limiting piece 2341 can move towards the first damping mechanism 233. Therefore, the damping force of the first damping mechanism 233 can be increased.

[0181] When the driving rod 23d moves in the first direction towards the outside of the base 23a, the second limiting piece 2342 rotates around the first rotation axis in the second rotation direction r2 in the Figure 16 At this time, the second matching part 2343b slides from the second extension end D2 of the first matching part 2343a to the first extension end D1 of the first matching part 2343a, the distance between the first limiting piece 2341 and the second limiting piece 2342 decreases, and the first limiting piece 2341 can move away from the first damping mechanism 233. Therefore, the damping force of the first damping mechanism 233 can be reduced.

[0182] It can be understood that in other embodiments, when the driving rod 23d moves in the first direction towards the inside of the base 23a, the damping force of the first damping mechanism 233 can be reduced. Correspondingly, when the driving rod 23d moves in the first direction towards the outside of the base 23a, the damping force of the first damping mechanism 233 can be increased.

[0183] In some embodiments, in order to facilitate the movement of the driving rod 23d in the first direction to realize the switching of different locking positions, please refer to Figure 18 , the driving rod 23d is threadedly connected with the communication hole 23f. In this way, on the one hand, the movement of the driving rod 23d in the first direction can be controlled by rotating the driving rod 23d to realize the adjustment of the locking position of the driving rod 23d; on the other hand, after the driving rod 23d is adjusted to the target locking position, the driving rod 23d can be locked in the communication hole 23f through the threaded connection to avoid the movement of the driving rod 23d. The structure is simple and easy to process.

[0184] On the basis of any of the above embodiments, please refer to Figure 18 , Figure 8 for Figure 16-18 the exploded view of the base 23a in the hinge mechanism 23 shown in the figure. The outer surface of the base 23a is provided with a recessed groove portion 23g inwardly. The recessed groove portion 23g includes an opening 23g1, a groove bottom wall 23g2 and a groove side wall 23g3. The opening 23g1 penetrates the outer surface of the base 23a, the groove bottom wall 23g2 is opposite to the opening 23g1, and the groove side wall 23g3 is connected between the opening 23g1 and the groove bottom wall 23g2.

[0185] The second aperture 23f2 of the communication hole 23f penetrates the groove bottom wall 23g2 of the recessed groove portion 23g, and a part of the driving rod 23d can be located in the recessed groove portion 23g. In this way, the end of the driving rod 23d can be prevented from protruding from the outer surface of the base 23a, which is conducive to improving the appearance aesthetics of the hinge mechanism 23, thereby being conducive to improving the appearance aesthetics of the foldable electronic device 100. Among them, the "outer surface of the base 23a" refers to the surface of the base 23a facing away from the accommodation space C.

[0186] On this basis, in order to further improve the appearance aesthetics of the hinge mechanism 23, please continue to refer to Figure 17-18 , the hinge mechanism 23 further comprises a decorative cover 23h, and the decorative cover 23h covers the recessed groove portion 23g. Specifically, the decorative cover 23h is connected with the recessed groove portion 23g in a clamping manner. Please refer to Figure 18 , the decorative cover 23h comprises a cover body 23h1 and a flange 23h2, and the flange 23h2 is arranged at the outer edge of the cover body 23h1. The flange 23h2 can be used to abut against the groove side wall 23g3 of the recessed groove portion 23g, and the cover body 23h1 is used to block the opening 23g1 of the recessed groove portion 23g.

[0187] In this way, the opening 23g1 of the recessed groove portion 23g can be blocked by the decorative cover 23h, which can further improve the appearance aesthetics of the hinge mechanism 23 and the foldable electronic device 100, and can improve the waterproof performance of the hinge mechanism 23 and the foldable electronic device 100.

[0188] In some embodiments, the outer surface of the cover 23h1 is flush with the outer surface of the base 23a. In this way, the appearance of the hinge mechanism 23 and the foldable electronic device 100 can be further guaranteed. Of course, in other embodiments, the outer surface of the cover 23h1 can also be recessed inwardly relative to the outer surface of the base 23a.

[0189] In other embodiments, the decorative cover 23h can also not include the flange 23h2, in which case the cover 23h1 of the decorative cover 23h can be attached to the outer surface of the base 23a and seal the opening 23g1 of the groove portion 23g. For example, the decorative cover 23h can be fixed to the base 23a by adhesion, magnetic attraction, or the like.

[0190] For example, in the embodiment shown in Figure 16 In the embodiment shown, the opening 23g1 of the groove portion 23g penetrates the outer surface of the bottom plate 23a1. In this case, the area of the orthographic projection of the decorative cover 23h on the bottom plate 23a1 can be greater than the area of the opening 23g1 of the groove portion 23g and less than the area of the outer surface of the bottom plate 23a1, or the orthographic projection of the cover 23h1 of the decorative cover 23h on the bottom plate 23a1 can also be equal to the area of the outer surface of the bottom plate 23a1.

[0191] In some embodiments, referring to Figure 16 The first driven rod 23e is provided with a guide surface 23e1, and the first driven rod 23e is connected to the drive rod 23d by means of the guide surface 23e1. In the direction from the second limiting member 2342 to the first driven rod 23e, the guide surface 23e1 extends in a direction away from the drive rod 23d. In this way, the contact area between the first driven rod 23e and the drive rod 23d can be increased, and the connection reliability between the drive rod 23d and the first driven rod 23e can be improved.

[0192] In order to guarantee the damping symmetry of the first damping mechanism 233 and the second damping mechanism 237 and realize the synchronous adjustment of the positions of the first limiting member 2341 and the second limiting member 2342, referring to Figure 19The fourth limiting member 2382 can rotate relative to the base about a second rotation axis, which is parallel to the axial direction of the second rotating shaft 236. The second driven rod 23t is arranged on the fourth limiting member 2382 and located on the circumferential outer side of the fourth limiting member 2382. The second driven rod 23t is connected to the driving rod 23d. Specifically, the first driven rod 23e and the second driven rod 23t are respectively located on the opposite sides of the driving rod 23d. In this way, when the driving rod 23d moves in the first direction, the second limiting member 2342 and the fourth limiting member 2382 can be synchronously and reversely rotated, and the positions of the first limiting member 2341 in the axial direction of the first rotating shaft 232 and the positions of the third limiting member 2381 in the axial direction of the second rotating shaft 236 can be synchronously adjusted, so that the damping symmetry of the first damping mechanism 233 and the second damping mechanism 237 can be realized, and the adjustment difficulty of the damping force can be greatly reduced. In addition, the structure of the hinge mechanism 23 can be simplified, the number of parts can be reduced, and the optimization of the performance of the hinge mechanism 23 can be facilitated.

[0193] In other embodiments, please refer to Figure 19 , Figure 10 The partial structure schematic diagram of the hinge mechanism 23 provided for other embodiments of the present application is shown in the figure. The hinge mechanism 23 in the embodiment is different from the hinge mechanism 23 in the Figure 10 embodiment in that, Figure 10 In the hinge mechanism 23 shown in the embodiment, the second limiting member 2342 can rotate relative to the base 23a about the first rotation axis, and the first limiting member 2341 cannot rotate relative to the base 23a about the first rotation axis. In the embodiment, the first limiting member 2341 can rotate relative to the base 23a about the first rotation axis, and the second limiting member 2342 cannot rotate relative to the base 23a about the first rotation axis. In this case, the first driven rod 23e is fixedly connected to the first limiting member 2341.

[0194] In addition, in the embodiment, the first matching part 2343a is arranged on the second limiting member 2342, and the second matching part 2343b is arranged on the first limiting member 2341. Specifically, the structure of the first limiting member 2341 in the embodiment is the same as the structure of the second limiting member 2342 in the Figure 10 embodiment, and the structure of the second limiting member 2342 in the embodiment is the same as the structure of the first limiting member 2341 in the Figure 10 embodiment. The remaining structures of the hinge mechanism 23 in the embodiment are the same as the remaining structures of the hinge mechanism 23 in the Figure 10 embodiment, and will not be described here again.

[0195] Furthermore, in this embodiment, the second limiting member 2342 and the fourth limiting member 2382 are connected as one unit. This prevents the second limiting member 2342 from rotating with the first swing arm 231, and also prevents the fourth limiting member 2382 from rotating with the second swing arm 235.

[0196] Based on this, the second limiting member 2342 and the first bushing 2311 can be omitted. Figure 20 The first bearing 239 in the illustrated embodiment.

[0197] In some other embodiments, please refer to Figure 20 , Figure 19 A partial perspective view of a hinge mechanism 23 provided in some embodiments of this application. The hinge mechanism 23 in this embodiment is similar to... Figure 21 The hinge mechanism 23 in the illustrated embodiment differs in that, in addition to the first pivot 232, first swing arm 231, first damping mechanism 233, first limiting mechanism 234, second pivot 236, second swing arm 235, second damping mechanism 237, and second limiting mechanism 238, the hinge mechanism 23 in this embodiment also includes a first fixing member 23m and a second fixing member 23k. Specifically, the first fixing member 23m is disposed on the drive rod 23d, and the second fixing member 23k is disposed on the first driven rod 23e. When the first mating part 2343a and the second mating part 2343b are in the mating position, the first fixing member 23m and the second fixing member 23k cooperate with each other to restrict the rotation of the first driven rod 23e relative to the drive rod 23d.

[0198] In this way, after adjusting the first mating part 2343a and the second mating part 2343b to the target mating position, the first driven rod 23e and the drive rod 23d can be relatively fixed by the first fixing member 23m and the second fixing member 23k, so as to prevent the first limiting member 2341 and the second limiting member 2342 from rotating relative to each other with the rotation of the first swing arm 231, so that the first mating part 2343a and the second mating part 2343b can be stably maintained in the target mating position, which can further improve the stability of the folding process of the foldable electronic device 100.

[0199] Please see Figure 21 , Figure 20 for Figure 21 The exploded view shows the first fixing member 23m and the drive rod 23d in the hinge mechanism 23. The first fixing member 23m includes a mounting portion 23m1 and a fixing portion 23m2. The mounting portion 23m1 includes a cover plate E1 and a side plate E2, which can be disposed on the outer edge of the cover plate E1. A mounting groove can be defined between the side plate E2 and the cover plate E1. For example, the side plate E2 can be disposed around the outer edge of the cover plate E1.

[0200] The fixing part 23m2 is fixedly connected to the mounting part 23m1. For details, please refer to Figure 22 The fixing part 23m2 includes a connecting plate H1, a first clamping plate H2 and a second clamping plate H3. The first clamping plate H2, the second clamping plate H3 and the connecting plate H1 are all flat plates. For example, please refer to Figure 21 The thickness direction of the first clamping plate H2 and the thickness direction of the second clamping plate H3 are both parallel to the Y-axis direction. The first clamping plate H2 and the second clamping plate H3 are arranged in the Y-axis direction. The connecting plate H1 is connected to the first clamping plate H2 and the second clamping plate H3. For example, please refer to Figure 21 The thickness direction of the connecting plate H1 is parallel to the Z-axis direction. The first clamping plate H2, the second clamping plate H3 and the connecting plate H1 define a clamping groove H0, and the clamping groove H0 is located on the side of the connecting plate H1 away from the mounting part 23m1.

[0201] For details, please refer to Figure 21 The first clamping plate H2 includes a first side edge H21 and a second side edge H22 opposite in the X-axis direction. The second clamping plate H3 includes a third side edge H31 and a fourth side edge H32 opposite in the X-axis direction.

[0202] The first clamping part H4 is provided on the fixing part 23m2. For example, please refer to Figure 21 The first clamping part H4 includes a first clamping groove H41 and a second clamping groove H42. The first clamping groove H41 is provided on the first clamping plate H2. The first clamping groove H41 extends in the X-axis direction, and the first clamping groove H41 penetrates the first clamping plate H2 in the Y-axis direction. The first clamping groove H0 includes a first assembly opening H411, and the first assembly opening H411 penetrates the first side edge H21.

[0203] The second clamping groove H42 is provided on the second clamping plate H3. Specifically, the second clamping groove H42 is provided opposite to the first clamping groove H41. The second clamping groove H42 extends in the X-axis direction, and the second clamping groove H42 penetrates the second clamping plate H3 in the Y-axis direction. The second clamping groove H0 includes a second assembly opening H421, and the second assembly opening H421 penetrates the third side edge H31.

[0204] It can be understood that in other embodiments, only one of the first clamping groove H41 and the second clamping groove H42 can be provided, that is, the first clamping part H4 is provided on one of the first clamping plate H2 and the second clamping plate H3.

[0205] In order to realize the connection between the mounting part 23m1 and the fixing part 23m2, please refer to Figure 22The fixing part 23m2 is provided with a matching groove H5. Specifically, the matching groove H5 can be formed on the connecting plate H1. The mounting part 23m1 can be connected to the matching groove H5 by clamping or bonding. Alternatively, in other embodiments, the fixing part 23m2 and the mounting part 23m1 can also be an integral molded part.

[0206] Please refer to Figure 22 , Figure 20 For Figure 22 The assembly schematic diagram of the first limiting part 2341, the third limiting part 2381 and the driving rod 23d in the hinge mechanism 23 is shown. The first end 23d1 of the driving rod 23d can be accommodated in the matching groove H5 on the first fixing part 23m. In some embodiments, the first fixing part 23m is rotationally connected with the driving rod 23d. In this way, when the driving rod 23d is rotated to move the driving rod 23d in the first direction, the driving rod 23d can be rotated relative to the first fixing part 23m, facilitating adjustment of the locking position of the driving rod 23d.

[0207] In some embodiments, in order to improve the connection reliability between the driving rod 23d and the first fixing part 23m, please refer to Figure 22 , the outer peripheral wall of the driving rod 23d is provided with a first limiting groove G. The first limiting groove G can be annular. Alternatively, the first limiting groove G can be a plurality of first limiting grooves G, which are arranged at intervals in the circumferential direction of the driving rod 23d.

[0208] The mounting part 23m1 further includes a first limiting protruding rib E3 fixedly connected to one end of the mounting part 23m1 away from the fixing part 23m2. Specifically, the first limiting protruding rib E3 can be fixedly connected to one end of the side plate E2 away from the cover plate E1. The first limiting protruding rib E3 can be annular. Please refer to Figure 21 , the first limiting protruding rib E3 can be clamped in the first limiting groove G. In this way, the reliable connection of the first fixing part 23m and the driving rod 23d can be achieved.

[0209] Further, please refer to Figure 22 and in combination with Figure 21 , the side plate E2 of the mounting part 23m1 is provided with a limiting hole E21 penetrating the side plate E2. The limiting hole E21 can be a plurality of limiting holes E21 arranged at intervals in the circumferential direction of the side plate E2. The second end 23d2 of the driving rod 23d can be clamped in the limiting hole E21.

[0210] On the basis of any of the above embodiments, in order to reduce the assembly difficulty between the driving rod 23d and the first fixing part 23m, please refer to Figure 22The first end 23d1 of the driving rod 23d is provided with a notch K, the notch K is recessed from the first end 23d1 to the second end 23d2 of the driving rod 23d, and the notch K penetrates through the opposite sides of the outer peripheral wall of the driving rod 23d. In this way, the elastic deformation ability of the first end 23d1 of the driving rod 23d can be improved, and the first end 23d1 of the driving rod 23d can be conveniently assembled into the matching groove H5 of the mounting portion 23m1.

[0211] Please refer to Figure 22 A part of the first driven rod 23e can be located in the clamping groove H0. It can be understood that in other embodiments, the entire first driven rod 23e can also be located in the clamping groove H0, as long as at least a part of the first driven rod 23e is located in the clamping groove H0.

[0212] The second fixing member 23k includes a second clamping portion, please refer to Figure 22 The second clamping portion is a first clamping shaft, and the axial direction of the first clamping shaft is parallel to the axial direction of the first rotating shaft 232. The axial direction of the first clamping shaft is connected to the first clamping groove H41 and the second clamping groove H42 respectively. Specifically, one end of the first clamping shaft can be assembled into the first clamping groove H41 from the first assembly opening H411, and the other end of the first clamping shaft can be assembled into the second clamping shaft from the second assembly opening H421.

[0213] When the first matching portion 2343a and the second matching portion 2343b are in the matching position, the first clamping portion H4 is clamped and matched with the second clamping portion. In this way, the relative fixation of the first fixing member 23m and the second fixing member 23k can be realized through the matching of the first clamping portion H4 and the second clamping portion, and the relative fixation between the first driven rod 23e and the driving rod 23d can be realized, and the first matching portion 2343a and the second matching portion 2343b can be kept in the target matching position, avoiding the relative rotation of the first limiting member 2341 and the second limiting member 2342 with the rotation of the first swing arm 231.

[0214] It can be understood that in other embodiments, the first clamping portion H4 can be formed as a first clamping shaft, and the second clamping portion can be formed as a clamping groove clamped and matched with the first clamping shaft.

[0215] In some embodiments, when the driving rod 23d moves along the first direction relative to the base 23a, the first fixing member 23m and the second fixing member 23k are slidingly matched. Specifically, the second clamping shaft can be slidingly matched with the first clamping groove H41 along the extension direction of the first clamping groove H41. At the same time, the second clamping shaft can also be slidingly matched with the second clamping groove H42 along the extension direction of the second clamping groove H42. In this way, the movement of the first fixing member 23m and the second fixing member 23k to the driving rod 23d can be avoided, and the rotation of the first driven rod 23e can be ensured.

[0216] In addition, since the first driven rod 23e is fixedly connected to the first limiting member 2341 in the embodiment, in order to ensure the movement of the first limiting member 2341 in the axial direction of the first rotating shaft 232, the second fixed member 23k can also move in the axial direction of the first rotating shaft 232 relative to the first fixed member 23m. Specifically, please refer to Figure 22 , the size of the first driven rod 23e in the axial direction of the first rotating shaft 232 is smaller than the distance between the first clamping plate H1 and the second clamping plate H2. In this way, the cooperation of the first fixed member 23m and the second fixed member 23k can avoid limiting the movement of the first limiting member 2341 in the axial direction of the first rotating shaft 232.

[0217] In order to simplify the structure of the hinge mechanism 23, please refer to Figure 20 , the second driven rod 23t is provided with a third fixed member 23u for connecting with the first fixed member 23m. The structure of the third fixed member 23u can be the same as that of the second fixed member 23k, and the way of connecting the first fixed member 23m by the third fixed member 23u is the same as that by the second fixed member 23k, which will not be described in detail here.

[0218] It can be understood that the first fixed member 23m and the second fixed member 23k in the embodiment can be combined with the hinge mechanism 23 in any embodiment of the present application.

[0219] Please refer back to Figure 20 , the hinge mechanism 23 further comprises a synchronous mechanism 23p, which is in transmission connection with the first swing arm 231 and the second swing arm 235, and is used to drive the first swing arm 231 and the second swing arm 235 to rotate reversely, so as to make the first swing arm 231 and the second swing arm 235 rotate synchronously between the unfolded position and the folded position. The synchronous mechanism 23p in the embodiment is applied to the hinge mechanism 23 in any embodiment of the present application.

[0220] The synchronous mechanism 23p has the following functions: when any one of the first swing arm 231 and the second swing arm 235 rotates from the unfolded position to the folded position, the other swing arm can also be driven to rotate synchronously from the unfolded position to the folded position by means of the synchronous mechanism 23p. Similarly, when any one of the first swing arm 231 and the second swing arm 235 rotates from the folded position to the unfolded position, the other swing arm can also be driven to rotate synchronously from the folded position to the unfolded position by means of the synchronous mechanism 23p.

[0221] Please refer to Figure 23The synchronous mechanism 23p comprises a first gear 23p1, a second gear 23p2 and two intermediate gears 23p2. The first gear 23p1 is fixed on the first rotating shaft 232 and can rotate with the first rotating shaft 232. The second gear 23p2 is fixed on the second rotating shaft 236 and can rotate with the second rotating shaft 236.

[0222] The two intermediate gears 23p2 are engaged with each other, one intermediate gear 23p2 is engaged with the first gear 23p1, and the other intermediate gear 23p2 is engaged with the second gear 23p2. Alternatively, the diameters and the number of teeth of the intermediate gears 23p2, the first gear 23p1 and the second gear 23p2 are the same. In this way, by arranging the two intermediate gears 23p2 and engaging the two intermediate gears 23p2 between the first gear 23p1 and the second gear 23p2, the first gear 23p1 and the second gear 23p2 can be synchronously and reversely rotated, i.e. the first rotating shaft 232 and the second rotating shaft 236 can be synchronously and reversely rotated, thereby realizing the synchronous and reverse rotation of the first swing arm 231 and the second swing arm 235. This structure is simple and easy to realize.

[0223] It can be understood that in other embodiments, the number of intermediate gears 23p2 can also be four, six, etc. Alternatively, the synchronous mechanism 23p can only comprise the first gear 23p1 and the second gear 23p2, and the synchronous and reverse rotation of the first swing arm 231 and the second swing arm 235 can be realized by directly engaging the first gear 23p1 and the second gear 23p2.

[0224] In yet some embodiments, please refer to Figure 23 , Figure 20 a cross-sectional view of the hinge mechanism 23 provided in some embodiments of the present application. The hinge mechanism 23 in the present embodiment is different from the hinge mechanism 23 in the embodiment shown in Figure 20 in that the structures of the first fixing member 23m and the second fixing member 23k in the present embodiment are different from the structures of the first fixing member 23m and the second fixing member 23k in the embodiment shown in Figure 23 .

[0225] Specifically, please refer to Figure 23 , the first fixing member 23m in the present embodiment is a first magnetic member, and the second fixing member 23k is a second magnetic member. The first magnetic member and the second magnetic member can be magnetically attracted. One of the first magnetic member and the second magnetic member can be a magnet or a magnetic steel, and the other of the first magnetic member and the second magnetic member can be a magnetic metal member (for example, an iron member, etc.) that can be magnetically attracted to the magnet or the magnetic steel, or both the first magnetic member and the second magnetic member are magnets or magnetic steels. In this way, the relative fixation of the driving rod 23d and the first driven rod 23e can be conveniently realized. This structure is simple, easy to process and low in cost.

[0226] Please refer to Figure 24 The structure of the third fixing member 23u can be the same as that of the second fixing member 23k, and the third fixing member 23u is connected to the first fixing member 23m in the same way as the second fixing member 23k is connected to the first fixing member 23m, which will not be described in detail here.

[0227] It can be understood that the first fixing member 23m and the second fixing member 23k in the embodiment can be combined with the hinge mechanism 23 in any embodiment of the present application.

[0228] In still other embodiments, please refer to Figure 24 , Figure 10 A partial structure schematic view of the hinge mechanism 23 provided in some other embodiments of the present application. The hinge mechanism 23 in the embodiment is different from the hinge mechanism 23 in the Figure 10 embodiment in that the structure of the first adjusting structure 2343 in the embodiment is different from the structure of the first adjusting structure 2343 in the Figure 25 embodiment.

[0229] Specifically, in the embodiment, the first matching part 2343a of the first adjusting structure 2343 is a first magnet, and the second matching part 2343b is a second magnet. The magnetization direction of the first magnet is parallel to the axial direction of the first rotating shaft 232. The magnetization direction of the second magnet is opposite to that of the first magnet. When the first limiting member 2341 and the second limiting member 2342 rotate relative to each other, the magnetic repulsion force between the first magnet and the second magnet can change accordingly.

[0230] The first magnet and the second magnet can be a magnet or a magnetic steel. The "magnetization direction" refers to the direction from the south pole to the north pole of the magnet, i.e., the direction from the S pole to the N pole. For example, please refer to Figure 25 , Figure 24 A partial structure schematic view of the hinge mechanism 23 in the Figure 21 embodiment. The end of the first matching part 2343a adjacent to the second matching part 2343b is the N pole, and the end of the first matching part 2343a away from the second matching part 2343b is the S pole. The end of the second matching part 2343b adjacent to the first matching part 2343a is the N pole, and the end of the second matching part 2343b away from the first matching part 2343a is the S pole.

[0231] In this embodiment, the first engaging portion 2343a is orthogonally projected on a reference plane as a first projection, and the second engaging portion 2343b is orthogonally projected on the reference plane as a second projection. The reference plane is perpendicular to the axial direction of the first rotating shaft 232. The first projection and the second projection have an overlapping area on the reference plane. When the first limiting member 2341 and the second limiting member 2342 rotate relative to each other, the size of the overlapping area changes. It can be understood that the greater the size of the overlapping area, the greater the magnetic repulsion between the first magnet and the second magnet, and the smaller the size of the overlapping area, the smaller the magnetic repulsion between the first magnet and the second magnet.

[0232] In this way, by adjusting the size of the overlapping area, the size of the magnetic repulsion between the first magnet and the second magnet corresponding to the overlapping area is adjusted, and then the force between the first limiting member 2341 and the second limiting member 2342 can be adjusted, and the distance between the first engaging portion 2343a and the second engaging portion 2343b at different engaging positions can be changed.

[0233] For example, referring to Figure 10 , the first engaging portion 2343a and the second engaging portion 2343b can each be formed in a circular arc shape. In the extension path of the first engaging portion 2343a, the thickness of the first engaging portion 2343a can be constant. That is, the first engaging portion 2343a is an equal-thickness structure. Similarly, the second engaging portion 2343b can also be formed as an equal-thickness structure.

[0234] It can be understood that in other embodiments, the shape of the first engaging portion 2343a can be the same as the shape of the first engaging portion 2343a in the embodiment shown in Figure 10 . In this case, the second engaging portion 2343b can have the same shape as the second engaging portion 2343b in the embodiment shown in Figure 21 , or the same shape as the second engaging portion 2343b in the embodiment shown in Figure 26 . In this way, when the first limiting member 2341 and the second limiting member 2342 rotate relative to each other, the size of the magnetic repulsion can be changed by changing the thickness of the magnet corresponding to the overlapping area. In addition, in other embodiments, the size of the magnetic repulsion can also be changed by changing the material corresponding to the overlapping area, etc.

[0235] In yet other embodiments, referring to Figure 26 , Figure 10 is a partial structure schematic view of a hinge mechanism 23 provided in yet other embodiments of the present application. The hinge mechanism 23 in this embodiment is different from the hinge mechanism 23 in the embodiment shown in Figure 10 in that the structure of the first adjusting structure 2343 in this embodiment is different from the structure of the first adjusting structure 2343 in the embodiment shown in Figure 26 .

[0236] Please refer to ​ In this embodiment, the first adjusting structure 2343 is an air bag. The air bag is connected between the first limiting member 2341 and the second limiting member 2342. Specifically, in the axial direction of the first rotating shaft 232, the two ends of the first adjusting structure 2343 can be respectively abutted against the first limiting member 2341 and the second limiting member 2342. The air bag is filled with gas, and the air bag is provided with a gas charging and discharging port for charging and discharging the air bag. In this way, the volume of the air bag can be adjusted by charging or discharging the air bag, and thus the distance between the first limiting member 2341 and the second limiting member 2342 can be adjusted.

[0237] Specifically, when the air bag is charged, the volume of the air bag increases, at this time the air bag expands and can push the first limiting member 2341 to move towards the direction of the first damping mechanism 233. When the air bag is discharged, the volume of the air bag decreases, at this time the air bag shrinks and can pull the first limiting member 2341 to move away from the direction of the first damping mechanism 233.

[0238] According to the above description of each embodiment, the hinge mechanism 23 and the foldable electronic device 100 in the embodiments of the present application can adjust the damping force and torsion force curve of the foldable electronic device 100 after the whole machine of the foldable electronic device 100 is assembled, so that the foldable electronic device 100 reaches the best opening and closing hand feeling.

[0239] For example, after the foldable electronic device 100 in the embodiment is used for a period of time, the distance between the first limiting member 2341 and the second limiting member 2342 can be adjusted by the first adjusting structure 2343 to adjust the position of the first limiting member 2341 in the axial direction of the first rotating shaft 232, adjust the torsion force curve of the foldable electronic device 100, on the one hand, the problem of damping force decline caused by wear and tear of parts can be improved, so that the foldable electronic device 100 can still maintain in the intermediate hovering state after being used for a period of time. On the other hand, the opening and closing hand feeling of the foldable electronic device 100 can be ensured, and the user experience can be improved.

[0240] For another example, the user can adjust the distance between the first limiting member 2341 and the second limiting member 2342 according to actual needs by the first adjusting structure 2343 to adjust the position of the first limiting member 2341 in the axial direction of the first rotating shaft 232, adjust the damping force and torsion force curve of the foldable electronic device 100, adjust the damping feeling of the foldable electronic device 100, and meet the use requirements of different users. For another example, the distance between the first limiting member 2341 and the second limiting member 2342 can also be adjusted by the first adjusting structure 2343 to adjust the position of the first limiting member 2341 in the axial direction of the first rotating shaft 232, so that the foldable electronic device 100 can realize stable switching from the flat state to the intermediate hovering state.

[0241] Therefore, the hinge mechanism 23 and the foldable electronic device 100 in the embodiments of the present application can improve the problem that the opening and closing feeling and the hovering experience of the foldable electronic device 100 are different due to factors such as use environment, use time, product batch, and the like.

[0242] In the description of the specification, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0243] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A hinge mechanism, characterized in that, include: Base; A first rotating shaft is disposed on the base; A first swing arm is connected to the first pivot and can rotate relative to the base between an unfolded position and a folded position. A first damping mechanism is disposed between the first swing arm and the first rotating shaft, and is used to provide damping force to the first swing arm; The first limiting mechanism includes a first limiting member, a second limiting member, and a first adjusting structure, wherein... The first limiting member is disposed on the first rotating shaft and abuts against the first damping mechanism. The first limiting member can move along the axial direction of the first rotating shaft to adjust the damping force of the first damping mechanism. The second limiting member is disposed on the side of the first limiting member that is away from the first damping mechanism; The first adjustment structure is disposed between the first limiting member and the second limiting member. The first adjustment structure is used to adjust the distance between the first limiting member and the second limiting member, so as to adjust the position of the first limiting member in the axial direction of the first rotating shaft.

2. The hinge mechanism according to claim 1, characterized in that, The first adjustment structure includes a first mating part and a second mating part that cooperate with each other, wherein one of the first mating part and the second mating part is disposed on the first limiting member and the other is disposed on the second limiting member; The first mating part and the second mating part have multiple mating positions, and the distance between the first limiting member and the second limiting member is different in different mating positions.

3. The hinge mechanism according to claim 2, characterized in that, The first limiting member and the second limiting member can rotate relative to each other about a first rotation axis, so that the first mating part and the second mating part can switch between multiple mating positions; wherein, the first rotation axis is parallel to the axial direction of the first rotating shaft.

4. The hinge mechanism according to claim 3, characterized in that, The first mating part and the second mating part abut and fit together.

5. The hinge mechanism according to claim 3 or 4, characterized in that, The first mating part extends circumferentially along the first circumference; Along the extension path of the first mating part, the first mating part includes a first extension end and a second extension end, and the thickness of the first mating part gradually increases in the direction from the first extension end to the second extension end. The center of the first circumference is located on the rotation axis of the first limiting member and / or the second limiting member.

6. The hinge mechanism according to any one of claims 3-5, characterized in that, The second mating part includes a second abutting end for abutting against the first mating part, the end face of the second abutting end being formed as an arc surface arched toward the first mating part.

7. The hinge mechanism according to claim 3, characterized in that, The first mating part is a first magnet, the second mating part is a second magnet, the magnetization direction of the first magnet is parallel to the axis of the first rotating shaft, and the magnetization direction of the second magnet is opposite to the magnetization direction of the first magnet; When the first limiting member and the second limiting member rotate relative to each other, the magnitude of the magnetic repulsion force between the first magnet and the second magnet can change accordingly.

8. The hinge mechanism according to any one of claims 3-7, characterized in that, The first limiting member can rotate relative to the base about the first rotation axis, and the first limiting member is provided with a first driven rod, at least a portion of which is located on the circumferential outer side of the first limiting member; or, the second limiting member can rotate relative to the base about the first rotation axis, and the second limiting member is provided with a first driven rod, at least a portion of which is located on the circumferential outer side of the second limiting member. The hinge mechanism further includes a drive rod connected to the first driven rod. The drive rod can move relative to the base in a first direction to drive the first limiting member or the second limiting member to rotate around the first rotation axis. Wherein, the first direction is perpendicular to the first rotation axis.

9. The hinge mechanism according to claim 8, characterized in that, The base defines an accommodating space, and the base is provided with a connecting hole. The connecting hole includes a first opening and a second opening that are connected to each other. The first opening is connected to the accommodating space, and the second opening is connected to the external space of the base. The drive rod passes through the connecting hole. The drive rod includes a first end and a second end opposite to each other. The first end passes through the first hole and is connected to the first driven rod, while the second end is exposed at the second hole.

10. The hinge mechanism according to claim 9, characterized in that, The drive rod is threadedly connected to the connecting hole.

11. The hinge mechanism according to claim 9 or 10, characterized in that, The outer surface of the base is provided with an inwardly recessed groove, the connecting hole penetrates the bottom wall of the groove, and the second end of the drive rod is located inside the groove.

12. The hinge mechanism according to claim 11, characterized in that, It also includes a decorative cover, which is disposed within the groove; or, the decorative cover is disposed on the outer surface of the base and seals the groove.

13. The hinge mechanism according to any one of claims 8-12, characterized in that, The first swing arm is provided with a first bushing, which is located on the side of the second limiting member away from the first damping mechanism, and the first rotating shaft is fixedly connected to the first bushing.

14. The hinge mechanism according to claim 13, characterized in that, The hinge mechanism further includes a first bearing, the first bearing comprising: A first stationary ring is rotatably connected to the first rotating shaft, and the first stationary ring abuts against the side of the second limiting member away from the first limiting member. The first moving ring is rotatably connected to one axial side of the first stationary ring, and the first moving ring abuts against the second limiting member.

15. The hinge mechanism according to any one of claims 8-14, characterized in that, The hinge mechanism further includes a first fixing member and a second fixing member. The first fixing member is disposed on the drive rod, and the second fixing member is disposed on the first driven rod. When the first mating part and the second mating part are in the mating position, the first fixing member and the second fixing member cooperate with each other to restrict the first driven rod from rotating relative to the drive rod.

16. The hinge mechanism according to claim 15, characterized in that, When the drive rod moves relative to the base along the first direction, the first fixing member and the second fixing member slide together.

17. The hinge mechanism according to claim 15 or 16, characterized in that, The first fastener includes a first snap-fit ​​portion, and the second fastener includes a second snap-fit ​​portion. When the first mating portion and the second mating portion are in the mating position, the first snap-fit ​​portion and the second snap-fit ​​portion engage with each other.

18. The hinge mechanism according to claim 17, characterized in that, The first fastener includes: First clamping plate; The second clamping plate is disposed at a distance from the first clamping plate; A connecting plate is connected to the first clamping plate and the second clamping plate. A clamping groove is defined between the first clamping plate, the second clamping plate and the connecting plate. The clamping groove is located on the side of the connecting plate opposite to the driving rod. At least a portion of the first driven rod is located in the clamping groove. The first snap-fit ​​portion is disposed on the first clamping plate and / or the second clamping plate.

19. The hinge mechanism according to claim 18, characterized in that, The first snap-fit ​​part includes a first snap-fit ​​groove and a second snap-fit ​​groove. The first snap-fit ​​groove is disposed on the first clamping plate, and the second snap-fit ​​groove is disposed on the second clamping plate. The second snap-fit ​​part is a first snap-fit ​​shaft, and the two ends of the first snap-fit ​​shaft are respectively snap-fitted into the first snap-fit ​​groove and the second snap-fit ​​groove.

20. The hinge mechanism according to any one of claims 15-19, characterized in that, The first fixing member is rotatably connected to the drive rod.

21. The hinge mechanism according to claim 15 or 16, characterized in that, The first fixing member includes a first magnetic suction member, and the second fixing member includes a second magnetic suction member. When the first mating part and the second mating part are in the mating position, the first magnetic suction member and the second magnetic suction member are magnetically attracted to each other.

22. The hinge mechanism according to any one of claims 1-21, characterized in that, The second limiting member is fixed in the axial direction of the first rotating shaft.

23. The hinge mechanism according to any one of claims 1-22, characterized in that, The first damping mechanism includes: The first damping element is fixedly connected to the first swing arm and can rotate synchronously with the first swing arm; The second damping element is disposed on the first rotating shaft and can move along the axial direction of the first rotating shaft; A first elastic element is sleeved on the first rotating shaft. The first elastic element is used to apply a force to the second damping element in the direction of the first damping element so that the first damping element and the second damping element remain in contact.

24. The hinge mechanism according to any one of claims 1-23, characterized in that, include: The second rotating shaft is spaced apart from the first rotating shaft; The second swing arm is connected to the second pivot and can rotate relative to the base between an unfolded position and a folded position; The second damping mechanism is disposed between the second swing arm and the second rotating shaft, and is used to provide damping force to the second swing arm; The second limiting mechanism includes a third limiting member, a fourth limiting member, and a second adjusting structure. The second limiting member is disposed on the second rotating shaft and abuts against the second damping mechanism. The third limiting member can move axially along the second rotating shaft to adjust the damping force of the second damping mechanism. The fourth limiting member is disposed on the side of the third limiting member away from the second damping mechanism. The second adjusting structure is disposed between the third limiting member and the fourth limiting member to adjust the distance between the third limiting member and the fourth limiting member, thereby adjusting the position of the third limiting member axially on the second rotating shaft.

25. A foldable electronic device, characterized in that, include: First shell; Second shell; A hinge mechanism, wherein the hinge mechanism is connected between the first housing and the second housing, and the hinge mechanism is the hinge mechanism according to any one of claims 1-24; A foldable screen, comprising a first part, a second part, and a third part, wherein the third part is connected between the first part and the second part, the first part is disposed in the first housing, the second part is disposed in the second housing, and the third part is disposed in the hinge mechanism.

Images