Hinge mechanism and foldable equipment

Abstract

The utility model discloses a hinge mechanism and foldable equipment, and belongs to the technical field of electronic equipment. The hinge mechanism comprises a base, a first rotating assembly and a second rotating assembly, the base extends in the first direction, the first rotating assembly comprises at least two first rotating bodies, the two first rotating bodies are symmetrically distributed on the two sides of the base, the second rotating assembly comprises at least two second rotating bodies, and the two second rotating bodies are symmetrically distributed on the two sides of the base. The symmetry axis of the two second rotating bodies is the same as the symmetry axis of the two first rotating bodies, and the distance between the rotating axis of each first rotating body and the symmetry axis is larger than that between the rotating axis of each second rotating body and the symmetry axis. The distance between the first rotating assembly and the midpoint of the base in the first direction is larger than the distance between the second rotating assembly and the midpoint of the base in the first direction. The screen containing space between the two first rotating bodies is larger than the screen containing space between the two second rotating bodies, and the risk that the hinge mechanism extrudes the screen can be reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic equipment, and in particular to a hinge mechanism and a foldable device. Background Art

[0002] With the development of flexible display (Organic Light-Emitting Diode, OLED) technology, foldable electronic devices have gradually become an important trend in the development of mobile terminals and have become an important field of competition for major terminal manufacturers. Currently, the state switching of foldable electronic devices mainly relies on hinges, and the folding and unfolding of the hinges drive the folding and unfolding of the electronic devices.

[0003] In the related art, when the terminal device is in a closed state, the screen space formed by the rotating elements distributed on both sides of the hinge mechanism base is relatively small. At this time, the screen of the terminal device is located in the screen space, and the distance between the rotating elements and the screen is relatively close.

[0004] When the terminal device is dropped, hit, or encounters other adverse events, the force is usually applied at the frame, causing the end area of ​​the hinge mechanism to deform more significantly. The rotating elements in the end area are more likely to squeeze the screen, causing the screen to fail. Utility Model Content

[0005] The embodiments of the present disclosure provide a hinge mechanism and a foldable device, which can solve the above technical problems existing in the related art. The technical solution is as follows:

[0006] In a first aspect, a hinge mechanism is provided, the hinge mechanism comprising a base, a first rotating assembly and a second rotating assembly;

[0007] The base extends along a first direction;

[0008] The first rotating assembly includes at least two first rotating bodies, which are symmetrically distributed on both sides of the base and are rotatably connected to the base respectively;

[0009] The second rotating assembly includes two second rotating bodies, which are symmetrically distributed on both sides of the base and are rotatably connected to the base respectively;

[0010] The symmetry axes of the two second rotating bodies are the same as the symmetry axes of the two first rotating bodies, the distance between the rotation axis of the first rotating body and the symmetry axis is greater than the distance between the rotation axis of the second rotating body and the symmetry axis, and the distance between the first rotating component and the midpoint of the base in the first direction is greater than the distance between the second rotating component and the midpoint of the base in the first direction.

[0011] Optionally, the hinge mechanism further includes a plurality of middle frame connecting members, each of the middle frame connecting members being slidably connected to the first rotating body and the second rotating body located on the same side of the base.

[0012] Optionally, the middle frame connecting member has a first arc-shaped slide groove; the first rotating body includes a first rotating body body and a first pin shaft, the first rotating body body has a first pin hole, the first pin shaft is located in the first pin hole and the first arc-shaped slide groove, the first pin shaft is rotationally connected to the first rotating body body, and is slidingly connected to the first arc-shaped slide groove.

[0013] Optionally, the middle frame connecting member has a first linear slide groove; the second rotating body has a protrusion, the protrusion is located in the first linear slide groove, and is slidably connected to the first linear slide groove.

[0014] Optionally, the hinge mechanism further includes a track component, which is rotatably connected to the base and connected to the middle frame connector.

[0015] Optionally, the base has a second arc-shaped slide groove; the track assembly includes a track rod and a first connecting rod, the track rod is at least partially located in the second arc-shaped slide groove and is slidingly connected to the base, and the first connecting rod is rotationally connected to the track rod and the middle frame connecting piece respectively.

[0016] Optionally, the hinge mechanism further includes a second connecting rod and a third connecting rod, the second connecting rod is rotationally connected to the track rod and the first rotating body respectively, and the third connecting rod is rotationally connected to the track rod and the second rotating body respectively.

[0017] Optionally, the hinge structure further includes a floating plate, wherein the floating plate is located between the middle frame connecting member and the screen and is connected to the middle frame connecting member.

[0018] Optionally, the hinge mechanism further includes a linkage component, which is connected to the base, and is used to maintain the synchronous movement of the symmetrically distributed first rotating body and the second rotating body, and the second rotating body has a linkage part, and the linkage part is adapted to the linkage component.

[0019] In a second aspect, a foldable terminal is provided, wherein the foldable terminal comprises the hinge mechanism according to any one of the first aspects.

[0020] The beneficial effects brought by the technical solution provided by the embodiments of the present disclosure include at least:

[0021] In the hinge mechanism of the embodiment of the present invention, the first rotating component is close to the end of the base in the first direction relative to the second rotating component. In a foldable device equipped with a hinge mechanism, the first rotating component is close to the frame of the foldable device, and the second rotating component is away from the frame of the foldable device. When the frame of the foldable device in a closed state is subjected to concentrated stress, the frame deforms and squeezes the hinge mechanism. The degree of deformation on one side of the first rotating body of the hinge mechanism is greater than that on one side of the second rotating body. Since the distance between the rotation axis of the first rotating body and the axis of symmetry is greater than the distance between the rotation axis of the second rotating body and the axis of symmetry, the screen space between the two first rotating bodies is greater than the screen space between the two second rotating bodies, thereby reducing the risk of the hinge mechanism squeezing the screen and improving the service life of the screen.

[0022] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 is one of the exploded schematic diagrams of a hinge mechanism provided by an embodiment of the present disclosure;

[0025] Figure 2 It is a structural schematic diagram of a middle frame connecting member, a first rotating body, and a second rotating body provided in an embodiment of the present disclosure;

[0026] Figure 3 is a cross-sectional schematic diagram of a hinge mechanism provided by an embodiment of the present disclosure;

[0027] Figure 4 This is the second exploded schematic diagram of a hinge mechanism provided by an embodiment of the present disclosure;

[0028] Figure 5 It is a structural schematic diagram of a track assembly, a first rotating body, and a second rotating body provided in an embodiment of the present disclosure;

[0029] Figure 6 is a partial schematic diagram of a linkage assembly and a second rotating body provided in an embodiment of the present disclosure;

[0030] Figure 7 It is a structural schematic diagram of a hinge mechanism in a closed state provided by an embodiment of the present disclosure.

[0031] Reference numerals:

[0032] Base 1, second arc-shaped slide 10, first frame 11, second frame 12;

[0033] The first rotating assembly 2, the first rotating body 20, the first rotating body body 201, the first pin hole 201a, and the first pin shaft 202;

[0034] The second rotating assembly 3, the second rotating body 30, the protruding portion 301, and the linkage portion 302;

[0035] Middle frame connecting member 4, first arc-shaped slide groove 41, first linear slide groove 42;

[0036] Track assembly 5, track rod 51, first connecting rod 52;

[0037] A second connecting rod 6, a third connecting rod 7, and a floating plate 8;

[0038] Linkage assembly 9, linkage gear 91, and fixed bracket 92. DETAILED DESCRIPTION

[0039] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0040] The present disclosure provides a hinge mechanism, referring to Figure 1 As shown, Figure 1 It is one of the exploded schematic diagrams of a hinge mechanism provided in an embodiment of the present disclosure. The hinge mechanism may include a base 1, a first rotating component 2 and a second rotating component 3.

[0041] The following are the various components of the hinge mechanism:

[0042] 1. Base 1

[0043] Reference Figure 1 As shown, the base 1 is along the first direction ( Figure 1 The base 1 may be formed in one piece, for example, by casting, injection molding, or the like. The base 1 may also be a spliced ​​base 1 assembled from a plurality of components, and the base 1 may include a first frame 11 and a second frame 12, which are stacked and fixedly connected, for example, by welding, glue dispensing, threaded fastening connection, snap-on connection, or the like.

[0044] Reference Figure 3 As shown, Figure 31 is a cross-sectional schematic diagram of a hinge mechanism provided by an embodiment of the present disclosure, wherein the base 1 has a second arc-shaped slide groove 10, and the second arc-shaped slide groove 10 is used to accommodate the track rod 51 in the track assembly 5. The present disclosure does not specifically limit the size, curvature and other parameters of the second arc-shaped slide groove 10, and can be matched and set according to the shape and size of the corresponding area of ​​the track rod 51.

[0045] The present disclosure does not specifically limit the material of the base 1, and can be matched and set according to factors such as the usage scenarios of different hinge mechanisms, manufacturing costs, and structural strength requirements. For example, the base 1 can be made of one or more materials selected from metals, alloys, plastics, and ceramics.

[0046] In the embodiment of the present disclosure, the base 1 may be in a plate-like, columnar or other shapes, which are not specifically limited in the present disclosure. The base 1 may be a symmetrical structure, that is, the base 1 has a symmetry axis, and the related elements in the first rotating assembly 2 and the second rotating assembly 3 may be symmetrically distributed about the symmetry axis, that is, the two first rotating bodies 20 are symmetrical about the symmetry axis, and the two second rotating bodies 30 are symmetrical about the symmetry axis.

[0047] When the hinge mechanism is in the unfolded state, the first rotating assembly 2, the second rotating assembly 3 and the base 1 can form a plane. When the hinge mechanism is in the closed state, the first rotating body 20 and the second rotating body 30 located on both sides of the base 1 are close to each other, and the hinge structure as a whole presents a teardrop-shaped cross-section.

[0048] 2. First rotating component 2

[0049] Reference Figure 1 As shown, the first rotating assembly 2 may include two first rotating bodies 20, which are symmetrically distributed on both sides of the base 1 and are respectively rotatably connected to the base 1. When the hinge mechanism moves from the unfolded state to the closed state, the base 1 remains stationary, and the first rotating body 20 rotates relative to the base 1; when the hinge mechanism moves from the closed state to the unfolded state, the movement of the first rotating body 20 is similar and will not be described in detail.

[0050] The present disclosure does not specifically limit the number of the first rotating bodies 20 in the hinge mechanism, and the number of the first rotating bodies 20 is at least two. Taking the number of the first rotating bodies 20 as four as an example, the four first rotating bodies 20 are respectively located at the two end positions of the base 1, and at the same time, the two ends of the base 1 are respectively opposite to the frame of the foldable device, so as to ensure that the hinge structure in the closed state has a larger screen space close to the device frame area, so as to reduce the friction or extrusion of the hinge structure on the screen under the extrusion of the frame, thereby causing the failure of the screen.

[0051] There is a first symmetry axis between the two first rotating bodies 20, which can be the same as the symmetry axis of the base 1 or different from the symmetry axis of the base 1. The first symmetry axis can be set according to factors such as the shape of the base 1 and the connection position between the first rotating body 20 and the base 1. Figure 1 As shown, the distance between the two first rotating bodies 20 is L1, and the distance between the first rotating body 20 and the first symmetry axis is (L1) / 2.

[0052] When the hinge mechanism is in a closed state, in the cross section of the hinge mechanism in the axial direction perpendicular to the first axis of symmetry, the distance between the two first rotating bodies 20 is greater than the distance between the corresponding positions of the two second rotating bodies 30, that is, the screen space between the two first rotating bodies 20 is greater than the screen space between the two second rotating bodies 30.

[0053] Reference Figure 2 As shown, the first rotating body 20 may include a first rotating body body 201 and a first pin shaft 202. The first rotating body body 201 has a first pin hole 201a. The first pin shaft 202 is located in the first pin hole 201a, and at least part of the first pin shaft 202 is located outside the first pin hole 201a. The first pin shaft 202 is rotatably connected to the first rotating body body 201, and the exposed area of ​​the first pin shaft 202 relative to the first pin hole 201a can cooperate with the first arc-shaped sliding groove 41 of the middle frame connecting member 4 to achieve sliding connection.

[0054] Since the rotation axes of the first rotating body 20 and the second rotating body 30 are not on the same axis, the first rotating body 20 performs eccentric motion relative to the second rotating body 30 , so the shape and size of the first arc-shaped sliding groove 41 are adapted to the motion trajectory of the first pin shaft 202 .

[0055] 3. Second rotating component 3

[0056] Reference Figure 1 As shown, the second rotating assembly 3 may include two second rotating bodies 30, which are symmetrically distributed on both sides of the base 1 and are respectively rotatably connected to the base 1. When the hinge mechanism moves from the unfolded state to the closed state, the base 1 remains stationary, and the second rotating body 30 rotates relative to the base 1; when the hinge mechanism moves from the closed state to the unfolded state, the movement of the second rotating body 30 is similar and will not be repeated.

[0057] The present disclosure does not specifically limit the number of the second rotating bodies 30 in the hinge mechanism. The number of the second rotating bodies 30 is at least two, and can be matched and set according to factors such as the length of the base 1 and the position of the screen relative to the hinge structure.

[0058] Taking the case where there are multiple second rotating bodies 30 as an example, there is a pair of first rotating bodies 20 at each end of the base 1, and multiple pairs of second rotating bodies 30 can be evenly distributed in the base 1 area between the two pairs of first rotating bodies 20 to ensure the stability and smoothness of the operation of the entire hinge mechanism.

[0059] There is a second symmetry axis between the two second rotating bodies 30, which can be the same as the symmetry axis of the base 1 or different from the symmetry axis of the base 1. The second symmetry axis can be set according to factors such as the shape of the base 1 and the connection position between the second rotating body 30 and the base 1. Figure 1 As shown, the distance between the two second rotating bodies 30 is L2, and the distance between the second rotating body 30 and the second symmetry axis is (L2) / 2.

[0060] Among them, the second symmetry axis of the two second rotating bodies 30 is the same as the first symmetry axis of the two first rotating bodies 20, which are collectively referred to as the rotational symmetry axis. The distance between the rotation axis of the first rotating body 20 and the rotational symmetry axis is greater than the distance between the rotation axis of the second rotating body 30 and the rotational symmetry axis, that is, (L1) / 2>(L2) / 2, so the screen space between the two first rotating bodies 20 is greater than the screen space between the two second rotating bodies 30.

[0061] Reference Figure 2 As shown, the second rotating body 30 has a protrusion 301 , and the protrusion 301 can cooperate with the first linear sliding groove 42 of the middle frame connecting member 4 to achieve a sliding connection between the second rotating body 30 and the middle frame connecting member 4 .

[0062] The present disclosure does not specifically limit the number of the protrusions 301 of the second rotating body 30, which can be one or more. Taking the case where the number of the protrusions 301 is two as an example, the two protrusions 301 can be located on both sides of the second rotating body 30, and the middle frame connector 4 has two corresponding first linear slide grooves 42, and each protrusion 301 is located in one first linear slide groove 42. At this time, both sides of the second rotating body 30 are slidably connected to the middle frame connector 4, which can ensure that the stress distribution of the second rotating body 30 is uniform, and avoid the undesirable phenomenon such as deformation or breakage of the second rotating body 30 caused by the protrusion 301 on one side.

[0063] Since the rotation axes of the first rotating body 20 and the second rotating body 30 are not on the same axis, the first rotating body 20 performs eccentric motion relative to the second rotating body 30. In some embodiments, the first rotating body 20 cooperates with an arcuate slide groove, and the second rotating body 30 cooperates with a linear slide groove.

[0064] Based on the same principle, in some other embodiments, the first rotating body 20 cooperates with a linear slide groove, and the second rotating body 30 cooperates with an arcuate slide groove. The corresponding slide groove shape and type can be matched and selected according to factors such as the size and shape of the first rotating body 20 and the second rotating body 30.

[0065] 4. Middle frame connector 4

[0066] Reference Figure 2 As shown, the hinge mechanism may further include a plurality of middle frame connectors 4, each of which is slidably connected to a first rotating body 20 and a second rotating body 30 located on the same side of the base 1. The middle frame connector 4 is connected to the middle frame of the foldable device, and the rotation of the first rotating body 20 and the second rotating body 30 relative to the base 1 drives the middle frame connector 4 to rotate, thereby realizing the overall unfolding and closing state of the foldable device.

[0067] The disclosed embodiment is described by taking the number of two middle frame connectors 4 as an example. The two middle frame connectors 4 are located on both sides of the base 1 and are slidably connected to the first rotating body 20 and the second rotating body 30 on the corresponding side respectively. Other situations are similar and will not be repeated here.

[0068] 4.1. First arc-shaped slide 41

[0069] Refer to Figure 2, Figure 2 It is a structural schematic diagram of a middle frame connecting member 4 and a first rotating body 20 and a second rotating body 30 provided in an embodiment of the present disclosure. The middle frame connecting member 4 has a first arc-shaped slide groove 41, a first pin shaft 202 is located in the first pin hole 201a, and at least a part of the first pin shaft 202 is located outside the first pin hole 201a, and the exposed area of ​​the first pin shaft 202 relative to the first pin hole 201a is located in the first arc-shaped slide groove 41 and is slidably connected to the first arc-shaped slide groove 41.

[0070] The present disclosure does not specifically limit the number of the first arc-shaped slide grooves 41, and can be matched and set according to the position of the first pin shaft 202 relative to the first pin hole 201a. For example: the first pin hole 201a is a blind hole, the exposed area of ​​the first pin shaft 202 relative to the first pin hole 201a is located on one side of the first pin hole 201a, and the number of the first arc-shaped slide grooves 41 is one; for another example: the first pin hole 201a is a through hole, the exposed area of ​​the first pin shaft 202 relative to the first pin hole 201a is located on both sides of the first pin hole 201a, and the number of the first arc-shaped slide grooves 41 is two.

[0071] 4.2. First linear chute 42

[0072] Reference Figure 2As shown, the middle frame connecting member 4 has a first linear slide groove 42, and the second rotating body 30 has a protrusion 301, which is located in the first linear slide groove and is slidably connected to the first linear slide groove.

[0073] Since the rotation axes of the first rotating body 20 and the second rotating body 30 are not on the same axis, the first rotating body 20 performs eccentric motion relative to the second rotating body 30. Therefore, in some embodiments, the first rotating body 20 cooperates with the arcuate slide groove and the second rotating body 30 cooperates with the linear slide groove.

[0074] The shape of the linear slide is relatively direct, the manufacturing process is simple, and complex curve processing can be avoided; the linear slide can also provide more precise guidance, and its straight structure makes the component more stable during movement, reducing unnecessary deviation and swing.

[0075] Based on the same principle, in some other embodiments, the first rotating body 20 cooperates with a linear slide groove, and the second rotating body 30 cooperates with an arcuate slide groove. The corresponding slide groove shape and type can be matched and selected according to factors such as the size and shape of the first rotating body 20 and the second rotating body 30.

[0076] 5. Track Component 5

[0077] The hinge mechanism may further include a track assembly 5, referring to Figure 4 As shown, Figure 4 This is the second exploded schematic diagram of a hinge mechanism provided by an embodiment of the present disclosure, wherein the track assembly 5 is rotatably connected to the base 1 and is connected to the middle frame connector 4. The track assembly 5 may include a track rod 51 and a first connecting rod 52.

[0078] The track bar 51 has an arc portion, and the arc portion is at least partially located in the second arc slot 10 of the base 1 and is slidably connected to the second arc slot 10. The cooperation between the arc portion of the track bar 51 and the second arc slot 10 can limit the motion trajectory of the track bar 51. As the arc portion and the second arc slot 10 slide relative to each other, the relative position relationship between the track bar 51 and the base 1 changes accordingly, thereby achieving the purpose of the track assembly 5 and the base 1 being rotatably connected, that is, the hinge mechanism can be moved from Figure 3 The expanded state shown switches to Figure 7 The folded state shown can also be changed from Figure 7 The folded state shown switches to Figure 3 Shown in expanded state.

[0079] The first connecting rod 52 is rotatably connected to the track rod 51 and the middle frame connecting member 4 located on the same side of the base 1 respectively. The track rod 51 drives the middle frame connecting member 4 to move through the first connecting rod 52. The middle frame connecting member 4 is connected to the middle frame of the foldable device, thereby adjusting the relative position relationship between the middle frame and the base 1 of the hinge mechanism, thereby realizing the state switching of the foldable electronic device.

[0080] 6. Second connecting rod 6 and third connecting rod 7

[0081] The hinge mechanism may further include a second link 6 and a third link 7. The present disclosure does not specifically limit the number of the second link 6, which may be matched and set according to factors such as the number of the first rotating bodies 20 and the number of the track rods 51. The present disclosure does not specifically limit the number of the third link 7, which may be matched and set according to factors such as the number of the second rotating bodies 30 and the number of the track rods 51.

[0082] Reference Figure 5 As shown, Figure 5 It is a structural schematic diagram of a track assembly 5 and a first rotating body 20 and a second rotating body 30 provided in an embodiment of the present disclosure. The first end of the second connecting rod 6 is rotatably connected to the track rod 51 located on the same side of the base 1, and the second end of the second connecting rod 6 is rotatably connected to the first rotating body 20 located on the same side of the base 1, so that the track rod 51 drives the first rotating body 20 to move through the second connecting rod 6 and limits the movement trajectory of the first rotating body 20.

[0083] The first end of the third connecting rod 7 is rotatably connected to the track rod 51 located on the same side of the base 1, and the second end of the third connecting rod 7 is rotatably connected to the second rotating body 30 located on the same side of the base 1, so that the track rod 51 drives the second rotating body 30 to move through the third connecting rod 7 and limits the movement trajectory of the second rotating body 30.

[0084] Among them, the first end of the second connecting rod 6 and the rotation axis of the track rod 51, the first end of the third connecting rod 7 and the rotation axis of the track rod 51 are on the same axis, the second end of the second connecting rod 6 and the axis of the first rotating body 20, and the second end of the third connecting rod 7 and the axis of the second rotating body 30 are on the same axis, thereby realizing the corresponding rotation angle, speed and other parameters of the first rotating body 20 and the second rotating body 30.

[0085] 7. Float 8

[0086] Reference Figure 4 As shown, the hinge structure may further include a floating plate 8, which is located between the middle frame connector 4 and the screen of the foldable device and is connected to the middle frame connector 4, and the floating plate 8 is used to contact the screen of the foldable device.

[0087] On the one hand, the floating plate 8 can help maintain the balance of the hinge mechanism on both sides of the base 1, reduce the sinking or distortion of the hinge mechanism, and thus make the opening or closing of the foldable device smoother and more uniform; on the other hand, the side of the floating plate 8 opposite to the screen is relatively flat, which can reduce the friction of the hinge mechanism on the screen during the opening or closing of the foldable device, and avoid the middle frame connector 4 causing scratches or wear on the screen and other adverse phenomena.

[0088] 8. Linkage components 9

[0089] Reference Figure 6 As shown, the hinge mechanism may further include a linkage component 9, which is connected to the base 1, and the linkage component 9 is used to maintain the synchronous movement of the symmetrically distributed first rotating body 20 and the second rotating body 30. The second rotating body 30 has a linkage portion 302, and the linkage portion 302 is adapted to the linkage component 9. The design of the linkage component 9 being adapted to the linkage portion 302 enables the elements on both sides of the base 1 to be linked to perform folding or unfolding movements synchronously, thereby enabling the screen of the foldable device to be folded or unfolded at the same time, thereby improving the convenience of using the foldable device and improving the user experience.

[0090] 8.1. Linkage gear 91

[0091] For example, the linkage assembly 9 and the linkage part 302 can be linked by gear transmission, see Figure 6 As shown, Figure 6 It is a partial schematic diagram of a linkage component 9 and a second rotating body 30 provided in an embodiment of the present disclosure. The linkage component 9 may include two linkage gears 91 symmetrically distributed along the rotational symmetry axis. The two linkage gears 91 are connected to the base 1. The linkage part 302 has a tooth structure. The central axis of the tooth structure is the same as the rotational axis of the second rotating body 30. The central axes of the two linkage gears 91 are in the same direction as the central axis of the tooth structure. The linkage of the elements on both sides of the base 1 is achieved through the mutual engagement between the linkage gears 91 and the tooth structure.

[0092] At the same time, gear transmission is adopted for linkage, and the gear meshing structure also has a self-locking function, so that the hinge mechanism can stop after rotating to any position under the drive of external force, and stably maintain at the specific position. For example, the preset position can be a position in the unfolded state, a position in the folded state, or a position between the unfolded state and the folded state, which can increase the use scenarios of the foldable device and improve the user experience.

[0093] 8.2. Fixed bracket 92

[0094] The linkage assembly 9 can also include a fixed bracket 92, which is rotatably connected to the rotating shafts of the two linkage gears 91 and the rotating shaft of the second rotating body 30 respectively to ensure that the central axes of the two linkage gears 91 are in the same direction as the central axis of the tooth structure, thereby avoiding failure of the gear meshing structure due to offset or rotation of the central axis.

[0095] Based on the same concept, an embodiment of the present disclosure further provides a foldable device, which may include a hinge mechanism as described in any one of the above embodiments.

[0096] The foldable devices involved in the present disclosure may also be referred to as terminals, mobile terminals, electronic devices, user equipment (UE), etc. Exemplarily, the foldable device may be a smart phone, a tablet computer, a laptop computer, a wearable device (e.g., a smart watch), etc., or it may be a professional shooting device such as a digital camera, a SLR camera / micro-single camera, a gimbal camera, a sports camera, a drone, etc. It should be understood that the present disclosure does not specifically limit the specific technology and specific device form adopted by the foldable device. In the description of the above embodiments, a mobile phone is taken as an example for explanation, but the present disclosure is not limited to this.

[0097] The foldable device has a frame, and the hinge mechanism is located in the area enclosed by the frame. One side of the first rotating component 2 in the hinge mechanism can be close to the frame of the foldable device and is rotatably connected to the base 1, and one side of the second rotating component 3 can be away from the position of the foldable device and is rotatably connected to the base 1.

[0098] Reference Figure 7 As shown, Figure 7 This is a schematic diagram of the structure of a hinge mechanism in a closed state provided by an embodiment of the present disclosure. When the frame of the foldable device in the closed state is subjected to concentrated stress, the frame deforms and squeezes the hinge mechanism. The first rotating component 2 is close to the frame, so the degree of deformation at the first rotating component 2 of the hinge mechanism is greater than the degree of deformation at the second rotating component. Since the distance between the rotation axis of the first rotating body 20 and the axis of symmetry is greater than the distance between the rotation axis of the second rotating body 30 and the axis of symmetry, the screen space between the two first rotating bodies 20 is greater than the screen space between the two second rotating bodies 30, thereby reducing the risk of the hinge mechanism squeezing the screen and increasing the service life of the screen.

[0099] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0100] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0101] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0102] It is further understood that the terms "center", "longitudinal", "lateral", "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present embodiment and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. In the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0103] It is further understood that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral molding; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection without other components between the two, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

[0104] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0105] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the scheme disclosed herein. The present disclosure is intended to cover any variation, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are considered to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the scope of rights.

[0106] It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. A hinge mechanism, characterized in that: The hinge mechanism comprises a base (1), a first rotating assembly (2) and a second rotating assembly (3); The base (1) extends along a first direction; the first rotating assembly (2) comprises at least two first rotating bodies (20), the two first rotating bodies (20) are symmetrically distributed on both sides of the base (1), and are respectively rotatably connected to the base (1); The second rotating assembly (3) comprises at least two second rotating bodies (30), the two second rotating bodies (30) are symmetrically distributed on both sides of the base (1), and are respectively rotatably connected to the base (1); The symmetry axes of the two second rotating bodies (30) are the same as the symmetry axes of the two first rotating bodies (20); the distance between the rotation axis of the first rotating body (20) and the symmetry axis is greater than the distance between the rotation axis of the second rotating body (30) and the symmetry axis; and the distance between the first rotating component (2) and the midpoint of the base (1) in the first direction is greater than the distance between the second rotating component (3) and the midpoint of the base (1) in the first direction.

2. The hinge mechanism according to claim 1, characterized in that: The hinge mechanism further comprises a plurality of middle frame connecting members (4), each of the middle frame connecting members (4) being slidably connected to the first rotating body (20) and the second rotating body (30) located on the same side of the base (1).

3. The hinge mechanism according to claim 2, characterized in that: The middle frame connecting member (4) has a first arc-shaped sliding groove (41); The first rotating body (20) comprises a first rotating body body (201) and a first pin shaft (202); the first rotating body body (201) has a first pin hole (201a); the first pin shaft (202) is located in the first pin hole (201a) and the first arc-shaped sliding groove (41); the first pin shaft (202) is rotationally connected to the first rotating body body (201) and is slidingly connected to the first arc-shaped sliding groove (41).

4. The hinge mechanism according to claim 2, characterized in that: The middle frame connecting member (4) has a first linear sliding groove (42); The second rotating body (30) has a protruding portion (301), and the protruding portion (301) is located in the first linear sliding groove (42) and is slidably connected to the first linear sliding groove (42).

5. The hinge mechanism according to claim 2, characterized in that: The hinge mechanism further comprises a track component (5), wherein the track component (5) is rotatably connected to the base (1) and is connected to the middle frame connecting member (4).

6. The hinge mechanism according to claim 5, characterized in that: The base (1) has a second arc-shaped sliding groove (10); The track assembly (5) comprises a track rod (51) and a first connecting rod (52); the track rod (51) is at least partially located in the second arc-shaped sliding groove (10) and is slidably connected to the base (1); and the first connecting rod (52) is rotationally connected to the track rod (51) and the middle frame connecting member (4), respectively.

7. The hinge mechanism according to claim 6, characterized in that: The hinge mechanism further comprises a second connecting rod (6) and a third connecting rod (7), wherein the second connecting rod (6) is rotationally connected to the track rod (51) and the first rotating body (20) respectively, and the third connecting rod (7) is rotationally connected to the track rod (51) and the second rotating body (30) respectively.

8. The hinge mechanism according to claim 2, characterized in that: The hinge mechanism also includes a floating plate (8), wherein the floating plate (8) is located between the middle frame connecting member (4) and the screen, and is connected to the middle frame connecting member (4).

9. The hinge mechanism according to claim 1, characterized in that: The hinge mechanism further comprises a linkage assembly (9), wherein the linkage assembly (9) is connected to the base (1), and the linkage assembly (9) is used to maintain the synchronous movement of the symmetrically distributed first rotating body (20) and the second rotating body (30), and the second rotating body (30) has a linkage part (302), and the linkage part (302) is adapted to the linkage assembly (9).

10. A foldable device, characterized in that: The foldable device comprises the hinge mechanism according to any one of claims 1-9.

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