Rotating hinge, folding housing and electronic device

Abstract

The present invention discloses a rotating hinge, a folding housing and an electronic device, wherein the rotating hinge comprises: a connecting mechanism and two rotating mechanisms rotatably connected to the connecting mechanism, the rotating mechanism comprises: a first rotating arm and a second rotating arm, one end of the first rotating arm and one end of the second rotating arm are both rotatably connected to the connecting mechanism, and the rotation axes between the first rotating arm and the second rotating arm and the connecting mechanism are parallel to each other and do not overlap; a connecting arm is rotatably connected to the other end of the first rotating arm and is slidably connected to the other end of the second rotating arm; a supporting plate is arranged on the first rotating arm, the second rotating arm and the connecting arm, the supporting plate is rotatably connected to the connecting arm and the second rotating arm, and the rotation axes between the supporting plate and the connecting arm and between the supporting plate and the second rotating arm are parallel to each other and do not overlap. The rotating hinge in the present invention can form a larger space to accommodate the curved part of the flexible screen when folded, and will not cause extrusion and folding of the flexible screen.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic equipment, and in particular to a rotary hinge, a folding housing and an electronic equipment. Background Art

[0002] As user demands increase, large-screen terminal devices are increasingly favored by users. Large screens can improve the display performance of terminal devices, but the increase in screen area often leads to a larger size of the terminal device, which in turn affects the portability of the terminal device. With the popularization of flexible screens, more and more foldable terminal devices have emerged, which are mainly achieved through the combination of flexible screens and hinges. When the hinge is unfolded, the flexible screen unfolds to form a larger area, thereby obtaining a larger display area; when the hinge is folded, the flexible screen can be folded accordingly, and the foldable terminal device can be folded into a smaller size, which is convenient for users to carry.

[0003] Normally, in a foldable terminal device, the two folding parts connected in the hinge are switched between the unfolded state and the folded state by relative rotation. However, since the hinge is generally arranged in the middle of the foldable terminal device, which is covered with a flexible screen, and since the rotation radius of the flexible screen is smaller than the rotation radius of the hinge, when the foldable terminal device is in the folded state, there is a curved part on the flexible screen and the compression amount of the curved part is relatively large. However, the flexible screen is a relatively fragile component and cannot withstand large pressure or tension during the folding process. Therefore, the hinge in the current foldable terminal device will easily cause damage to the flexible screen. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to solve the problem in the prior art that when the terminal device is in a folded state, the folding of the hinge will cause a bent part of the flexible screen and the compression of the bent part is large, which may easily cause damage to the flexible screen. A rotating hinge, a folding casing and an electronic device are provided.

[0005] To this end, according to a first aspect, the present invention provides a rotating hinge, comprising: a connecting mechanism and two rotating mechanisms rotatably connected to opposite sides of the connecting mechanism, the rotating mechanism comprising: a first rotating arm and a second rotating arm, one end of the first rotating arm and one end of the second rotating arm are both rotatably connected to the connecting mechanism, and the rotation axes between the first rotating arm and the second rotating arm and the connecting mechanism are parallel to each other and do not overlap; a connecting arm, which is rotatably connected to the other end of the first rotating arm and slidably connected to the other end of the second rotating arm; a support plate, which is arranged on the first rotating arm, the second rotating arm and the connecting arm, the support plate is rotatably connected to the connecting arm and the second rotating arm, and the rotation axes between the support plate and the connecting arm, and between the support plate and the second rotating arm are parallel to each other and do not overlap; the connecting arm rotates relative to the connecting mechanism, driving the second rotating arm to rotate relative to the connecting mechanism, the first rotating arm rotates relative to the connecting mechanism and relative to the connecting arm, and the connecting arm and the second rotating arm drive the support plate to rotate together, so that the two support plates are relatively flattened or relatively folded.

[0006] Furthermore, the second rotating arm is arranged in the middle part of the connecting mechanism, and two gear sets are respectively arranged on both sides of the rotation axis direction of the second rotating arm, so that the two second rotating arms rotate synchronously in opposite directions; the rotating hinge structure also includes two damping mechanisms arranged corresponding to the two gear sets, and the damping mechanism includes: a first concave-convex structure, and the first concave-convex structure is arranged at the end of one gear set away from the other gear set; a movable block, which is sleeved on the gear shaft of the gear set, and the movable block is provided with a second concave-convex structure, and the second concave-convex structure corresponds to the first concave-convex structure, and the movable block can slide along the axial direction of the gear shaft as the first concave-convex structure and the second concave-convex structure are engaged or separated; a fixed block, which is fixed on the gear shaft, and an elastic member is arranged between the fixed block and the movable block.

[0007] Furthermore, a stop mechanism is arranged between the two second rotating arms, and both ends of the stop mechanism are respectively mounted on the rotating shafts of the two second rotating arms; corresponding first stop blocks and second stop blocks are respectively arranged on the stop mechanism and the second rotating arm to limit the rotation of the two rotating mechanisms when the two support plates are relatively flattened or folded to a preset angle.

[0008] Furthermore, the connecting mechanism includes a first connecting cover and a second connecting cover, an arc groove is arranged between the first connecting cover and the second connecting cover, and the first rotating arm is connected to the connecting mechanism through the arc groove; the arc groove has a first slot for accommodating the first rotating arm to be connected and a second slot located at the other end opposite to the first slot, and the second slot is located on the second connecting cover.

[0009] Furthermore, a third stop block is provided on the second connection cover, and the third stop block extends into the second notch. When the two support plates are relatively flattened to a preset angle, the end surface of the first rotating arm abuts against the first stop block.

[0010] Furthermore, a stop groove corresponding to the third stop block is arranged on the end surface of the first rotating arm.

[0011] Furthermore, a fourth stop block is provided on the second connecting cover, and the fourth stop block is located at the first slot; a sliding groove matching the fourth stop block is provided on the first rotating arm, and when the first rotating arm rotates relative to the connecting mechanism, the fourth stop block slides in the sliding groove, and when the two support plates are folded to a preset angle relative to each other, the end face of the sliding groove abuts against the fourth stop block to limit the rotation of the first rotating arm.

[0012] Furthermore, the concave portion in the first concave-convex structure has a first slope surface and a second slope surface; when the two support plates are relatively flattened, the convex portion in the second concave-convex structure tends to slide into the concave portion in the first concave-convex structure along the first slope surface, and when the two support plates are relatively flattened to a preset angle, the convex portion in the second concave-convex structure still tends to slide into the concave portion in the first concave-convex structure along the first slope surface; when the two support plates are relatively folded, the convex portion in the second concave-convex structure tends to slide into the concave portion in the first concave-convex structure along the second slope surface, and when the two support plates are relatively folded to a preset angle, the convex portion in the second concave-convex structure still tends to slide into the concave portion in the first concave-convex structure along the second slope surface.

[0013] According to a second aspect, the present invention provides a folding housing for supporting a flexible screen, which includes a first shell, a second shell and a rotating hinge as described in the first aspect above, the rotating hinge is located between the first shell and the second shell, and the first shell and the second shell are respectively connected to two connecting arms.

[0014] According to a third aspect, the present invention provides an electronic device comprising a flexible screen and a folding casing as described in the second aspect above, wherein one end of the flexible screen is connected to a first casing, and the other end is connected to a second casing, and the middle part of the flexible screen is covered on a rotating hinge and is flattened or folded along with the rotating hinge.

[0015] The technical solution provided by the present invention has the following advantages:

[0016] 1. The rotary hinge provided by the present invention is provided with a connecting mechanism and two rotating mechanisms rotatably connected to the two opposite sides of the connecting mechanism, and the rotating mechanism is provided so that one end of its first rotating arm is rotatably connected to the connecting arm and the other end is rotatably connected to the connecting mechanism, and then the second rotating arm is provided so that one end is also rotatably connected to the connecting mechanism, but the other end is slidably connected to the connecting arm, and the rotating axes between the first rotating arm and the second rotating arm and the connecting mechanism are parallel to each other but do not overlap, so that the rotating mechanism can be extended during relative folding (the angle between the connecting arm and the first rotating arm increases, and the second rotating arm slides out of the connecting arm), and shortened during relative flattening (the angle between the connecting arm and the first rotating arm decreases, and the second rotating arm slides into the connecting arm), thereby avoiding compressing or stretching forces on the flexible screen; by setting the support plate therein to be rotatably connected to the connecting arm, the support plate can be moved away from the connecting arm as the entire rotating structure is extended. Mechanism, and then by rotatably connecting the support plate with the second rotating arm, and the rotation axes between the support plate and the connecting arm, and the rotation axes between the support plate and the second rotating arm are parallel and do not overlap with each other, so that during the relative folding process of the two rotating mechanisms, the rotation direction of the support plate relative to the second rotating arm is different from the rotation angle of the support plate relative to the connecting arm (because during the relative folding process of the two rotating mechanisms, the connecting arm moves away from the connecting mechanism based on the elongation of the rotating mechanism, and the second rotating arm has no such distance, therefore, the support arm rotatably connected to both the connecting arm and the second rotating arm needs to balance the different position changes of the two during the rotation process of the rotating mechanism by different rotation angles relative to the two), so that after the two rotating mechanisms are fully folded, the distance between the two support plates gradually increases from the end away from the connecting mechanism to the end close to the connecting mechanism, forming a larger accommodating space to accommodate the curved part of the flexible screen without squeezing or even folding the flexible screen.

[0017] 2. The rotary hinge provided by the present invention sets the second rotating arm in the middle of the connecting mechanism, and sets two gear sets on both sides of the rotation axis direction of the second rotating arm respectively, and then sets two damping mechanisms for the above two gear sets, so that damping is generated on both sides of the middle of the rotary hinge. Therefore, the torque of the entire rotary hinge can be evenly set by setting the damping mechanism, and the structure is simple.

[0018] 3. The rotary hinge provided by the present invention provides a stop mechanism between the two second rotating arms, with both ends respectively mounted on the rotating shafts of the two second rotating arms, and corresponding first stop blocks and second stop blocks are respectively provided on the stop mechanism and the second rotating arm, so that through the abutment between the first stop block and the second stop block, when the two support plates are relatively flattened or folded to a preset angle (that is, the two rotating mechanisms are relatively flattened or folded to a preset angle), the rotation of the two rotating mechanisms is restricted, thereby improving the stability of the rotary hinge when it is unfolded or folded to a preset angle, and improving the practicality of the rotary hinge.

[0019] 4. The rotary hinge provided by the present invention, by configuring the connecting mechanism to include a first connecting cover and a second connecting cover, thereby configuring an arc groove between the first connecting cover and the second connecting cover for accommodating the first rotating arm and providing a rotating trajectory of the first rotating arm, and configuring the second notch of the arc groove (another notch opposite to the first notch for accommodating the intervention of the first rotating arm) on the second connecting cover, so that the second connecting cover is fully utilized as a partial arc of the arc groove, thereby reducing the thickness of the rotary hinge when flattened.

[0020] 5. The rotary hinge provided by the present invention is provided with a third stop block extending into the second slot on the second connecting cover, so that when the two support plates are relatively flattened to a preset angle, the end face of the first rotating arm abuts against the first stop block, which can prevent the end of the first rotating arm from protruding from the second connecting cover when the rotary hinge is flattened, thereby improving the stability of the rotary hinge when flattened.

[0021] 6. The rotary hinge provided by the present invention is provided with a fourth stop block located at the first notch on the second connecting cover, and a sliding groove matching the fourth stop block is provided on the first rotating arm, so that when the first rotating arm rotates relative to the connecting mechanism, the fourth stop block slides in the sliding groove, and when the two support plates are folded to a preset angle relative to each other, the end face of the sliding groove abuts against the fourth stop block to limit the rotation of the first rotating arm, thereby preventing the first rotating arm from slipping out of the arc groove and improving the stability of the rotary hinge when folded. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of a foldable housing provided by an embodiment of the present invention;

[0024] Figure 2 and Figure 3 A schematic diagram of the structure of the rotary hinge provided by an embodiment of the present invention when it is flattened to a maximum angle;

[0025] Figure 4 and Figure 5 for Figure 2 Partial structural exploded diagram of the rotary hinge;

[0026] Figure 6 It is a schematic diagram of the structure of the rotary hinge provided by an embodiment of the present invention when it is folded to the maximum angle;

[0027] Figure 7 for Figure 2 A cross-sectional view of a connection mechanism in a rotary hinge;

[0028] Figure 8 A schematic diagram of the structure of a damping mechanism in a rotary hinge provided in an embodiment of the present invention;

[0029] Fig. 9 and Fig.10 A cross-sectional view of a stop mechanism in a rotary hinge provided in an embodiment of the present invention;

[0030] Fig.11 and Fig.12 A schematic diagram of the interference relationship between a first concave-convex structure and a second concave-convex structure in a rotary hinge is provided for an embodiment of the present invention;

[0031] Description of reference numerals:

[0032] 1- first shell;

[0033] 2- second shell;

[0034] 3- Rotary hinge;

[0035] 31-connecting mechanism; 311-first connecting cover; 312-second connecting cover; 3121-third stop block; 3122-fourth stop block; 313-arc groove; 313a-first notch; 313b-second notch;

[0036] 32-rotating mechanism;

[0037] 321-first rotating arm; 3211-arc portion; 3211a-stop groove; 3211b-sliding groove;

[0038] 322-second rotating arm; 3221-sliding block; 3222-sliding rod; 3223-second stop block; 3223a-third end surface; 3223b-fourth end surface;

[0039] 323-connecting arm; 3231-sliding groove; 3232-arc-shaped groove;

[0040] 324-support plate; 3241-slider; 3242-arc-shaped slot;

[0041] 33-gear set; 331-first gear; 332-second gear; 333-third gear; 334-fourth gear;

[0042] 34-damping mechanism; 341-first concave-convex structure; 341a-first slope; 341b-second slope; 342-second concave-convex structure; 343-movable block; 344-fixed block; 345-elastic member;

[0043] 35-stop mechanism; 351-first stop block; 351a-first end surface; 351b-second end surface. DETAILED DESCRIPTION

[0044] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0048] The present invention discloses an electronic device, which includes a folding housing and a flexible screen covering the folding housing, wherein the folding housing is used to support the flexible screen, and the flexible screen can be folded or flattened along with the folding housing. The flexible screen can be, but is not limited to, a flexible display screen, a flexible touch screen, a flexible touch display screen, and other flexible components with corresponding functions.

[0049] Please refer to Figure 1 The folding housing includes a first shell 1, a second shell 2 and a rotating hinge 3, wherein the rotating hinge 3 is located between the first shell 1 and the second shell 2, and the first shell 1 and the second shell 2 are both connected to the rotating hinge 3.

[0050] Please refer to Figure 2-Figure 6 The rotary hinge 3 includes a connecting mechanism 31 and two rotating mechanisms 32 rotatably connected to opposite sides of the connecting mechanism 31. The two rotating mechanisms 32 can rotate toward or away from the connecting mechanism 31 to achieve the folding function of the rotary hinge 3. Specifically, the rotating mechanism 32 includes: a first rotating arm 321, a second rotating arm 322, a connecting arm 323 and a supporting plate 324. The first shell 1 and the second shell 2 are respectively connected to the two connecting arms 323.

[0051] Please refer to Figure 2-Figure 6 One end of the first rotating arm 321 is rotatably connected to the connecting arm 323, and the other end is rotatably connected to the connecting mechanism 31. The rotation axis between the first rotating arm 321 and the connecting mechanism 31 can be a real axis or a virtual axis ( Figure 2-Figure 6 The rotation axis between the first rotating arm 321 and the connecting mechanism 31 is shown as a virtual axis). For example, the rotation axis between the first rotating arm 321 and the connecting mechanism 31 is shown as a virtual axis. Figure 7 The connection mechanism 31 can be configured to include a first connection cover 311 and a second connection cover 312, and an arc groove 313 is provided between the first connection cover 311 and the second connection cover 312, so that the first rotating arm 321 is connected to the connection mechanism 31 through the arc groove 313. Specifically, an arc portion 3211 is provided at the end of the first rotating arm 321 connected to the connection mechanism 31. The arc portion 3211 is assembled in the arc groove 313, so that the rotational connection between the first rotating arm 321 and the connection mechanism 31 can be realized.

[0052] In the present application, in order to reduce the thickness of the rotary hinge 3 when it is flattened, the second slot 313b of the arc groove 313 (the slot in the arc groove 313 that accommodates the first rotating arm 321 is set as the first slot 313a, and the second slot 313b is located at the other end of the arc groove 313 opposite to the first slot 313a, that is, when the rotary hinge 3 is flattened, the end of the first rotating arm 321 located in the arc groove 313 slides toward the second slot 313b) can be set on the second connecting cover 312, that is, a through hole is set on the second connecting cover 312, and the through hole is a part of the arc groove 313.

[0053] In the present application, in order to improve the angular stability of the first rotating arm 321 when the rotating hinge 3 is flattened, thereby improving the stability of the entire rotating hinge 3, a third stop block 3121 can be set on the second connecting cover 312, and the third stop block 3121 extends into the second slot 313b. When the two support plates 324 are relatively flattened to a preset angle, the end face of the first rotating arm 321 abuts against the first stop block 351, thereby limiting the continued rotation of the two support plates 324 (that is, the two rotating mechanisms 32).

[0054] In this application, in order to prevent the setting of the third stop block 3121 from affecting the thickness of the rotary hinge 3, please refer to Figure 7 A stopping groove 3211 a corresponding to the third stopping block 3121 may be provided on the end surface of the first rotating arm 321 .

[0055] In the present application, in order to improve the angular stability of the first rotating arm 321 when the rotating hinge 3 is folded, and to prevent the first rotating arm 321 from slipping out of the arc groove 313, thereby improving the stability of the entire rotating hinge 3, a fourth stop block 3122 can be provided on the second connecting cover 312, and the fourth stop block 3122 is located at the first notch 313a. Accordingly, a sliding groove 3211b matching the fourth stop block 3122 is provided on the first rotating arm 321. When the first rotating arm 321 rotates relative to the connecting mechanism 31, the fourth stop block 3122 slides in the sliding groove 3211b. When the two support plates 324 are folded to a preset angle relative to each other, the end face of the sliding groove 3211b abuts against the fourth stop block 3122 to limit the rotation of the first rotating arm 321 (limit its rotation in the folding direction).

[0056] Please refer to Figure 2-Figure 6 , one end of the second rotating arm 322 is rotationally connected to the connecting mechanism 31, and the other end is slidingly connected to the connecting arm 323, and the rotation axis between the first rotating arm 321 and the connecting mechanism 31 and the rotation axis between the second rotating arm 322 and the connecting mechanism 31 are parallel to each other and do not overlap. Similarly, the rotation axis between the first rotating arm 321 and the connecting mechanism 31 can be a real axis or a virtual axis. Figure 6 As shown, the second rotating arm 322 and the connecting arm 323 are respectively provided with matching sliding blocks 3221 and sliding grooves 3231 to achieve sliding connection between the second rotating arm 322 and the connecting arm 323 .

[0057] Please refer to Figure 2-Figure 6 The support plate 324 is arranged on the first rotating arm 321, the second rotating arm 322 and the connecting arm 323. The support plate 324 is rotatably connected to the connecting arm 323 and the second rotating arm 322. The rotation axis between the support plate 324 and the connecting arm 323 and the rotation axis between the support plate 324 and the second rotating arm 322 are parallel to each other and do not overlap. In the present application, the diameter of the rotation axis between the support plate 324 and the connecting arm 323, and the diameter of the rotation axis between the support plate 324 and the second rotating arm 322 are both required to be relatively large (the difference between the rotation angle of the support plate 324 relative to the connecting arm 323 and the rotation angle of the support plate 324 relative to the second rotating arm 322 is relatively small, but the movement path lengths of the connecting arm 323 relative to the two are relatively different, so as to balance the position change between the connecting arm 323 and the second rotating arm 322: during the rotation process, the connecting arm 323 moves away from the connecting mechanism 31 based on the elongation of the rotating mechanism 32, or moves closer to the connecting mechanism 31 based on the shortening of the rotating mechanism 32, while the second rotating arm 322 does not have this distance change), therefore, the rotation axis between the support plate 324 and the connecting arm 323, and the rotation axis between the support plate 324 and the second rotating arm 322 can both be set as virtual axes. For details, please refer to Figure 4 , matching arc-shaped grooves 3232 (or slots) and sliders 3241 (or slide bars) may be provided on the support plate 324 and the connecting arm 323, respectively. Similarly, matching arc-shaped slots 3242 (or grooves) and slide bars 3222 (or slide bars) may be provided on the support plate 324 and the second rotating arm 322, respectively. Figure 4 As shown, the diameter of the virtual axis between the support plate 324 and the connecting arm 323 (ie, the diameter of the arc-shaped groove 3232 ) is smaller than the diameter of the virtual axis between the support plate 324 and the second rotating arm 322 (ie, the diameter of the arc-shaped slot 3242 ).

[0058] In the present application, the connecting arm 323 rotates relative to the connecting mechanism 31 (external force is applied to the first shell 1 and / or the second shell 2, so that the connecting arm 323 rotates relative to the connecting mechanism 31), driving the second rotating arm 322 to rotate relative to the connecting mechanism 31, and the first rotating arm 321 rotates relative to the connecting mechanism 31 and relative to the connecting arm 323. The connecting arm 323 and the second rotating arm 322 drive the support plate 324 to rotate together, so that the two support plates 324 are relatively flattened or relatively folded.

[0059] Please refer to Figure 3, the second rotating arm 322 can be arranged in the middle of the connecting mechanism 31. At the same time, in order to realize the synchronous flattening or folding of the two rotating mechanisms 32 (that is, the two rotating mechanisms 32 synchronously rotate in opposite directions), a gear set 33 can be arranged between the two second rotating arms 322. The specific number and type of gears in the gear set 33 are not limited, as long as it can realize the synchronous reverse rotation of the two second rotating arms 322. Specifically, the gear set 33 may include an even number of gears (such as two or four, etc., Figure 8 In the figure, the gear set 33 includes four gears. For example, the gear set 33 includes a first gear 331, a second gear 332, a third gear 333 and a fourth gear 334, a total of four gears. Figure 8 As shown, the first gear 331, the second gear 332, the third gear 333 and the fourth gear 334 are meshed in sequence, and the first gear 331 and the fourth gear 334 are respectively connected to the two second rotating arms 322, and respectively rotate coaxially with the two second rotating arms 322. More specifically, the first gear 331 and the fourth gear 334 can be respectively mounted on the rotating shafts of the two second rotating arms 322, or a gear structure can be provided on the outer wall surface (part or all of the outer wall surface) of the ends of the two second rotating arms 322 mounted on the rotating shaft, thereby serving as the first gear 331 and the fourth gear 334, respectively.

[0060] Please refer to Figure 8In order to achieve uniform torque setting of the entire rotating hinge 3 and simplify the damping mechanism 34 that provides torque, gear sets 33 can be set on both sides of the axial direction of the second rotating arm 322, and two damping mechanisms 34 corresponding to the above-mentioned two gear sets 33 are set. More specifically, the damping mechanism 34 includes: a first concave-convex structure 341, a second concave-convex structure 342, a movable block 343, a fixed block 344 and an elastic member 345, wherein the end of one gear set 33 away from the other gear set 33 is provided with the above-mentioned first concave-convex structure 341 (for example, assuming that the two gear sets 33 are respectively the first gear set 33 and the second gear set 33, and the first gear set 33 is located at the upper end of the second gear set 33, then the upper end of the first gear set 33 is provided with the first concave-convex structure 341, and the lower end of the second gear set 33 is provided with the first concave-convex structure 341), the movable block 343 is sleeved on the gear shaft of the gear set 33, and the movable block 343 A second concave-convex structure 342 matching the first concave-convex structure 341 is provided on the gear shaft, and the movable block 343 can slide along the axial direction of the gear shaft as the first concave-convex structure 341 and the second concave-convex structure 342 are engaged or separated, the fixed block 344 is fixed on the gear shaft, and the elastic member 345 is provided between the fixed block 344 and the movable block 343. In the present application, the elastic member 345 can be provided on each gear shaft, or only on some gear shafts. In the present application, the elastic member 345 can be a spring.

[0061] Please refer to Fig. 9 and Fig.10 In order to further improve the stability of the rotating hinge 3 when it is flattened or folded to a preset angle, a stopper mechanism 35 can be provided between the two rotating arms. The two ends of the stopper mechanism 35 are respectively sleeved on the rotating shafts of the two second rotating arms 322. The stopper mechanism 35 and the second rotating arm 322 are respectively provided with corresponding first stopper blocks 351 and second stopper blocks 3223 to limit the rotation of the two rotating mechanisms 32 when the two support plates 324 are relatively flattened or folded to a preset angle. More specifically, the first stopper block 351 has a first end face 351a and a second end face 351b, and the second stopper block 3223 has a third end face 3223a and a fourth end face 3223b. Fig. 9 and Fig.10Taking the second rotating arm 322 on the left side of the middle as an example, when the second rotating arm 322 rotates counterclockwise and the two support plates 324 are relatively flattened to a preset angle, the first end surface 351a and the third end surface 3223a abut against each other, limiting the second rotating arm 322 from continuing to rotate counterclockwise; when the second rotating arm 322 rotates clockwise and the two support plates 324 are relatively folded to a preset angle, the second end surface 351b and the fourth end surface 3223b abut against each other, limiting the second rotating arm 322 from continuing to rotate clockwise. In the present application, when the number of gears in the gear set 33 is more than two (e.g., Figure 8 When the stop mechanism 35 is provided with four gears (as shown in the figure), shaft holes can be set on the two end faces corresponding to the two gear sets 33, and the gear shaft of the intermediate gear in the gear set 33 (except the two gears respectively connected to the two second rotating arms 322) is set in the shaft hole.

[0062] Please refer to Fig.11 and Fig.12 In order to increase the clamping force when the rotary hinge 3 is flattened or rotated to a preset angle and reduce the occurrence of the problem of the electronic device opening, it is assumed that the two slopes of the concave portion of the first concave-convex structure 341 are respectively the first slope 341a and the second slope 341b, and the first slope 341a is the slope along which the convex portion of the second concave-convex structure 342 tends to slide into the concave portion of the first concave-convex structure 341 when the two support plates 324 are relatively flattened, and the second slope 341b is the slope along which the convex portion of the second concave-convex structure 342 tends to slide into the first concave-convex structure 341 when the two support plates 324 are relatively folded. The slope surface of the concave part in the first concave-convex structure 341 can be set to correspond to the first concave-convex structure 341 and the second concave-convex structure 342, so that when the two support plates 324 are relatively flattened to a preset angle, the convex part in the second concave-convex structure 342 still tends to slide into the concave part in the first concave-convex structure 341 along the first slope surface 341a, and when the two support plates 324 are relatively folded to a preset angle, the convex part in the second concave-convex structure 342 still tends to slide into the concave part in the first concave-convex structure 341 along the second slope surface 341b.

[0063] The movement process of the rotary hinge 3 in this application is described below:

[0064] Please refer to Figure 2-Figure 4, is a structural schematic diagram when the two rotating mechanisms 32 in the rotating hinge 3 are flattened to a preset angle (that is, the two support plates 324, that is, the flexible screen in the corresponding electronic device are flattened to a preset angle, and the preset angle is 180 degrees in the figure as an example). At this time, if the user applies an external force to the left connecting arm 323 to make it rotate clockwise relative to the connecting mechanism 31, or applies an external force to the right connecting arm 323 to make it rotate counterclockwise relative to the connecting mechanism 31, or applies force to both connecting arms 323 (the user generally applies force to the first shell 1 and / or the second shell 2 in the corresponding electronic device, and based on the fact that the first shell 1 and the second shell 2 are respectively connected to the two connecting arms 323, the force is ultimately applied to the connecting arms 323), the rotating hinge 3 begins to fold until the two rotating mechanisms 32 rotate to the preset angle. Taking the preset angle as 0 degrees as an example, please refer to Figure 5 , respectively, are schematic diagrams of the structures when the two rotating mechanisms 32 in the rotating hinge 3 rotate to 0 degrees.

[0065] The following takes the case where the user applies an external force to the left connecting arm 323 to rotate it clockwise relative to the connecting mechanism 31, and the rotating hinge 3 begins to fold as an example to illustrate the movement of each component in the rotating hinge 3:

[0066] Based on the sliding connection between the connecting arm 323 and one end of the second rotating arm 322, the other end of the second rotating arm 322 is rotationally connected to the connecting mechanism 31, so that the connecting arm 323 drives the second rotating arm 322 to rotate synchronously relative to the connecting mechanism 31, and the rotation axis between the connecting arm 323 and the connecting mechanism 31 is the rotation axis between the second rotating arm 322 and the connecting mechanism 31; based on the connecting arm 323 is also connected to the connecting mechanism 31 through the first rotating arm 321, so the connecting arm 323 drives the first rotating arm 321 to rotate clockwise relative to the connecting mechanism 31; based on the rotation axis between the second rotating arm 322 and the connecting mechanism 31, it is parallel to the rotation axis between the first rotating arm 321 and the connecting mechanism 31 but does not overlap (the rotation axis between the first rotating arm 321 and the connecting mechanism 31 has a larger diameter than the second rotating arm 322 and the rotation axis diameter between the first rotating arm 321 and the connecting mechanism 31), the length of the portion of the first rotating arm 321 extending out of the connecting mechanism 31 increases more during the rotation process, driving the connecting arm 323 to slide relative to the second rotating arm 322, and the connecting arm 323 moves away from the connecting mechanism 31, and the angle between the connecting arm 323 and the first rotating arm 321 increases; based on the rotation connection between the support plate 324 and the connecting arm 323, and the rotation connection between the support plate 324 and the second rotating arm 322, the support plate 324 is driven by the two to rotate relative to the connecting mechanism 31, and based on the connection arm 323 moving away from the connecting mechanism 31, while the second rotating arm 322 does not have this distance, the support plate 324 is driven to rotate clockwise relative to the connecting arm 323, and rotate counterclockwise relative to the second rotating arm 322.

[0067] The rotary hinge 3 provided by the present invention is provided with a connecting mechanism 31 and two rotating mechanisms 32 rotatably connected to the connecting mechanism 31 on opposite sides, and the rotating mechanism 32 is provided so that one end of the first rotating arm 321 is rotatably connected to the connecting arm 323 and the other end is rotatably connected to the connecting mechanism 31, and then a second rotating arm 322 is provided so that one end is also rotatably connected to the connecting mechanism 31, but the other end is slidably connected to the connecting arm 323, and the rotation axes between the first rotating arm 321 and the second rotating arm 322 and the connecting mechanism 31 are parallel to each other but do not overlap, so that the rotating mechanism 32 can be extended during the relative folding process (the angle between the connecting arm 323 and the first rotating arm 321 is increased, and the second rotating arm 322 slides out of the connecting arm 323), and shortened during the relative flattening process (the connecting arm 323 is shortened). The angle between the first rotating arm 321 and the second rotating arm 322 is reduced, and the second rotating arm 322 slides into the connecting arm 323), thereby avoiding compressing or stretching force on the flexible screen; by setting the support plate 324 to be rotatably connected with the connecting arm 323, the support plate 324 can be moved away from the connecting mechanism 31 as the entire rotating structure is extended, and then by rotatably connecting the support plate 324 to the second rotating arm 322, the rotation axis between the support plate 324 and the connecting arm 323, and the support plate 324 and the second rotating arm 322 The rotation axes between them are parallel to each other and do not overlap, so that during the relative folding process of the two rotating mechanisms 32, the rotation direction of the support plate 324 relative to the second rotating arm 322 is different from the rotation angle of the support plate 324 relative to the connecting arm 323 (because during the relative folding process of the two rotating mechanisms 32, the connecting arm 323 moves away from the connecting mechanism 31 based on the elongation of the rotating mechanism 32, while the second rotating arm 322 does not move away from the same amount, and therefore, the support arm rotatably connected to both the connecting arm 323 and the second rotating arm 322 needs to balance the different position changes of the two during the rotation process of the rotating mechanism 32 by different rotation angles relative to the two). As a result, after the two rotating mechanisms 32 are fully folded, the distance between the two support plates 324 gradually increases from the end away from the connecting mechanism 31 to the end close to the connecting mechanism 31, forming a larger accommodating space to accommodate the curved part of the flexible screen without squeezing or even folding the flexible screen.

[0068] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, the obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. A rotary hinge, characterized in that: include: A connecting mechanism (31) and two rotating mechanisms (32) rotatably connected to opposite sides of the connecting mechanism (31), wherein the rotating mechanisms (32) include: a first rotating arm (321) and a second rotating arm (322), one end of the first rotating arm (321) and one end of the second rotating arm (322) being rotatably connected to the connecting mechanism (31), and the rotation axes between the first rotating arm (321) and the second rotating arm (322) and the connecting mechanism (31) are parallel to each other and do not overlap; A connecting arm (323) is rotatably connected to the other end of the first rotating arm (321), and is slidably connected to the other end of the second rotating arm (322); A support plate (324) is arranged on the first rotating arm (321), the second rotating arm (322) and the connecting arm (323); the support plate (324) is rotatably connected to the connecting arm (323) and the second rotating arm (322); the rotation axis between the support plate (324) and the connecting arm (323), and the rotation axis between the support plate (324) and the second rotating arm (322) are parallel to each other and do not overlap; the support plate (324) and the connecting arm (323) are respectively provided with matching arc-shaped grooves (3232) and sliding blocks (3241); the support plate (324) and the second rotating arm (322) are respectively provided with matching arc-shaped slots (3242) and sliding rods (3222); The connecting arm (323) rotates relative to the connecting mechanism (31), driving the second rotating arm (322) to rotate relative to the connecting mechanism (31); the first rotating arm (321) rotates relative to the connecting mechanism (31) and relative to the connecting arm (323); the connecting arm (323) and the second rotating arm (322) together drive the support plate (324) to rotate, so that the two support plates (324) are relatively flattened or relatively folded.

2. The rotary hinge according to claim 1, characterized in that: The second rotating arm (322) is arranged in the middle of the connecting mechanism (31), and two gear sets (33) are respectively arranged on both sides of the rotation axis direction of the second rotating arm (322), so that the two second rotating arms (322) rotate synchronously in opposite directions; The rotary hinge structure further comprises two damping mechanisms (34) arranged corresponding to the two gear sets (33), the damping mechanisms (34) comprising: A first concavo-convex structure (341), wherein the end of one of the gear sets (33) away from the other gear set (33) is provided with the first concavo-convex structure (341); A movable block (343) is sleeved on the gear shaft of the gear set (33), and a second concave-convex structure (342) is provided on the movable block (343), the second concave-convex structure (342) corresponds to the first concave-convex structure (341), and the movable block (343) can slide along the axial direction of the gear shaft as the first concave-convex structure (341) and the second concave-convex structure (342) are engaged or separated; A fixed block (344) is fixed on the gear shaft, and an elastic member (345) is provided between the fixed block (344) and the movable block (343).

3. The rotary hinge according to claim 2, characterized in that: A stop mechanism (35) is provided between the two second rotating arms (322), and two ends of the stop mechanism (35) are respectively sleeved on the rotating shafts of the two second rotating arms (322); the stop mechanism (35) and the second rotating arm (322) are respectively provided with corresponding first stop blocks (351) and second stop blocks (3223), so as to limit the rotation of the two rotating mechanisms (32) when the two support plates (324) are relatively flattened or folded to a preset angle.

4. The rotary hinge according to claim 3, characterized in that: The connecting mechanism (31) comprises a first connecting cover (311) and a second connecting cover (312); an arc groove (313) is provided between the first connecting cover (311) and the second connecting cover (312); the first rotating arm (321) is connected to the connecting mechanism (31) via the arc groove (313); the arc groove (313) comprises a first notch (313a) for accommodating the first rotating arm (321) to be connected, and a second notch (313b) located at the other end opposite to the first notch (313a); the second notch (313b) is located on the second connecting cover (312).

5. The rotary hinge according to claim 4, characterized in that: A third stop block (3121) is provided on the second connection cover (312), and the third stop block (3121) extends into the second notch (313b). When the two support plates (324) are relatively flattened to a preset angle, the end surface of the first rotating arm (321) abuts against the first stop block (351).

6. The rotary hinge according to claim 5, characterized in that: A stop groove (3211a) corresponding to the third stop block (3121) is provided on the end surface of the first rotating arm (321).

7. The rotary hinge according to any one of claims 4 to 6, characterized in that: A fourth stop block (3122) is provided on the second connection cover (312), and the fourth stop block (3122) is located at the first notch (313a); a sliding groove (3211b) matching the fourth stop block (3122) is provided on the first rotating arm (321), and when the first rotating arm (321) rotates relative to the connecting mechanism (31), the fourth stop block (3122) slides in the sliding groove (3211b), and when the two support plates (324) are folded relative to each other to a preset angle, the end surface of the sliding groove (3211b) abuts against the fourth stop block (3122) to limit the rotation of the first rotating arm (321).

8. The rotary hinge according to claim 3, characterized in that: The concave portion in the first concave-convex structure (341) has a first slope (341a) and a second slope (341b); when the two support plates (324) are relatively flattened, the convex portion in the second concave-convex structure (342) tends to slide along the first slope (341a) into the concave portion in the first concave-convex structure (341); and when the two support plates (324) are relatively flattened to a preset angle, the convex portion in the second concave-convex structure (342) still tends to slide along the first slope (341a). ) slides into the concave portion of the first concave-convex structure (341); when the two support plates (324) are folded relative to each other, the convex portion of the second concave-convex structure (342) tends to slide along the second slope surface (341b) into the concave portion of the first concave-convex structure (341); and when the two support plates (324) are folded relative to each other to a preset angle, the convex portion of the second concave-convex structure (342) still tends to slide along the second slope surface (341b) into the concave portion of the first concave-convex structure (341).

9. A folding housing, characterized in that: Used to support a flexible screen, comprising a first shell (1), a second shell (2) and a rotating hinge (3) according to any one of claims 1 to 8, wherein the rotating hinge (3) is located between the first shell (1) and the second shell (2), and the first shell (1) and the second shell (2) are respectively connected to the two connecting arms (323).

10. An electronic device, characterized in that: Comprising a flexible screen and a folding housing as claimed in claim 9, wherein one end of the flexible screen is connected to the first housing (1), and the other end is connected to the second housing (2), and the middle part of the flexible screen covers the rotating hinge (3) and is flattened or folded along with the rotating hinge (3).

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