CN216044966U - Rotary hinge, folding machine shell and electronic equipment - Google Patents

Abstract

The utility model discloses a rotary hinge, a folding machine shell and electronic equipment, wherein the rotary hinge comprises: coupling mechanism and with two rotary mechanism of coupling mechanism rotation connection, rotary mechanism includes: the connecting mechanism is connected with the first rotating arm and the second rotating arm in a rotating mode; the connecting arm is rotatably connected with the other end of the first rotating arm and is in sliding connection with the other end of the second rotating arm; the supporting plate is arranged on the first rotating arm, the second rotating arm and the connecting arm, the supporting plate is connected with the connecting arm and the second rotating arm in a rotating mode, and a rotating axis between the supporting plate and the connecting arm and a rotating axis between the supporting plate and the second rotating arm are parallel to each other and do not overlap. The rotary hinge can form a larger space for accommodating the bent part of the flexible screen during folding, and cannot extrude and fold the flexible screen.

Description

Rotary hinge, folding machine shell and electronic equipment

Technical Field

The utility model relates to the technical field of electronic equipment, in particular to a rotary hinge, a folding machine shell and electronic equipment.

Background

With the increase of user demands, large-screen terminal equipment is more and more favored by users. The large screen can improve the display performance of the terminal device, but the increase of the screen area often leads to a larger overall size of the terminal device, which affects the portability of the terminal device. Along with the popularization of the flexible screen, more and more folding terminal devices come into operation, the flexible screen and the hinge are mainly combined to realize the folding, and the flexible screen correspondingly expands to form a larger area in the unfolding state of the hinge so as to obtain a larger display area; under hinge fold condition, the flexible screen can correspond folding, and foldable terminal equipment can fold into less size, and the user of being convenient for carries.

In general, in a folding terminal device, two folding sections connected in a hinge are switched between an unfolded state and a folded state by relative rotation. However, the hinge is generally provided in the middle of the folder type terminal device, and the flexible screen is covered thereon, and since the rotation radius of the flexible screen is smaller than that of the hinge, when the folder type terminal device is in the folded state, the flexible screen has a bent portion and the amount of compression of the bent portion is large. However, the flexible screen is a relatively fragile component that cannot withstand a large pressure or tension during the folding process, and therefore, the hinge in the current folding terminal device will easily cause the flexible screen to be damaged.

SUMMERY OF THE UTILITY MODEL

Therefore, the present invention is directed to solve the problem in the prior art that when a terminal device is in a folded state during folding, folding of a hinge causes a bent portion of a flexible screen, and the bent portion is compressed by a large amount, which easily causes damage to the flexible screen, and provides a rotary hinge, a folding chassis, and an electronic device.

To this end, according to a first aspect, the utility model provides a rotary hinge comprising: coupling mechanism and rotate and connect in two rotary mechanism of the relative both sides of coupling mechanism, rotary mechanism includes: the connecting mechanism is connected with the first rotating arm and the second rotating arm in a rotating mode; the connecting arm is rotatably connected with the other end of the first rotating arm and is in sliding connection with the other end of the second rotating arm; the supporting plate is arranged on the first rotating arm, the second rotating arm and the connecting arm, the supporting plate is rotatably connected with the connecting arm and the second rotating arm, and the rotating axes between the supporting plate and the connecting arm and between the supporting plate and the second rotating arm are parallel and do not coincide with each other; the connecting arm rotates relative to the connecting mechanism to drive 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 together drive the supporting plates to rotate, so that the two supporting plates are relatively flattened or relatively folded.

Furthermore, a second rotating arm is arranged in the middle of the connecting mechanism, and two sides of the rotating axis direction of the second rotating arm are respectively provided with two gear sets, so that the two second rotating arms synchronously and reversely rotate; rotatory hinge structure still includes two damping mechanism that correspond the setting with two gear trains, and damping mechanism includes: the end part of one gear set, which is far away from the other gear set, is provided with a first concave-convex structure; the movable block is sleeved on a gear shaft of the gear set, a second concave-convex structure is arranged on the movable block, the second concave-convex structure corresponds to the first concave-convex structure, and the movable block can slide along the axis direction of the gear shaft along with the clamping or separation of the first concave-convex structure and the second concave-convex structure; the fixed block is fixed on the gear shaft, and an elastic part is arranged between the fixed block and the movable block.

Furthermore, a stop mechanism is arranged between the two second rotating arms, and two ends of the stop mechanism are respectively sleeved on the rotating shafts of the two second rotating arms; the stop mechanism and the second rotating arm are respectively provided with a first stop block and a second stop block which correspond to each other, so that when the two support plates are relatively unfolded or folded to a preset angle, the rotation of the two rotating mechanisms is limited.

Furthermore, the connecting mechanism comprises 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 with the connecting mechanism through the arc groove; the arc groove is provided with a first notch for accommodating the first rotating arm to be connected and a second notch positioned at the other end opposite to the first notch, and the second notch is positioned on the second connecting cover.

Furthermore, a third stop block is arranged on the second connecting cover, the third stop block extends into the second groove, and when the two supporting plates are relatively unfolded to a preset angle, the end face of the first rotating arm is abutted to the first stop block.

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

Furthermore, a fourth stop block is arranged on the second connecting cover and is positioned at the first notch; the first rotating arm is provided with a sliding groove matched with the fourth stop block, when the first rotating arm rotates relative to the connecting mechanism, the fourth stop block slides in the sliding groove, and when the two supporting plates are folded relatively to a preset angle, the end face of the sliding groove is abutted against the fourth stop block to limit the rotation of the first rotating arm.

Further, the concave part in the first concave-convex structure is provided with a first slope surface and a second slope surface; when the two support plates are relatively unfolded and flattened, the convex part in the second concave-convex structure tends to slide into the concave part in the first concave-convex structure along the first slope surface, and when the two support plates are relatively unfolded to a preset angle, the convex part in the second concave-convex structure still tends to slide into the concave part in the first concave-convex structure along the first slope surface; when two backup pads were folded relatively, the convex part in the second concave-convex structure tended to follow the domatic concave part that slides in the first concave-convex structure of second, and when two backup pads were folded relatively to predetermineeing the angle, the convex part in the second concave-convex structure still tended to follow the domatic concave part that slides in the first concave-convex structure of second.

According to a second aspect, the present invention provides a folding chassis for supporting a flexible screen, comprising a first housing, a second housing and a swivel hinge as described above in the first aspect, the swivel hinge being located between the first housing and the second housing, the first housing and the second housing being respectively connected to two connecting arms.

According to a third aspect, the present invention provides an electronic device, comprising a flexible screen and the foldable housing as described in the second aspect, wherein one end of the flexible screen is connected to the first housing, the other end of the flexible screen is connected to the second housing, and the middle portion of the flexible screen covers the rotating hinge and is unfolded or folded along with the rotating hinge.

The technical scheme provided by the utility model has the following advantages:

1. the rotary hinge provided by the utility model is characterized in that by arranging the connecting mechanism and two rotating mechanisms which are rotatably connected with two opposite sides of the connecting mechanism, a rotating mechanism is arranged, one end of a first rotating arm is rotationally connected with the connecting arm, the other end of the first rotating arm is rotationally connected with the connecting mechanism, a second rotating arm is arranged in the rotating mechanism, one end of the second rotating arm is also rotationally connected with the connecting mechanism, but the other end is connected with the connecting arm in a sliding way, and the rotating axes between the first rotating arm and the connecting mechanism and the second rotating arm are arranged to be parallel but not coincident with each other, so that the rotating mechanism can extend in the relative folding process (the included angle between the connecting arm and the first rotating arm is increased, and the second rotating arm slides out of the connecting arm), shortening in the relative flattening process (the included angle between the connecting arm and the first rotating arm is reduced, and the second rotating arm slides into the connecting arm) to avoid generating compressive or tensile acting force on the flexible screen; the supporting plate is rotationally connected with the connecting arm, so that the supporting plate can be far away from the connecting mechanism along with the extension of the whole rotating structure, and then the supporting plate is also rotationally connected with the second rotating arm, the rotating axes between the supporting plate and the connecting arm and the rotating axes between the supporting plate and the second rotating arm are parallel to each other and do not coincide with each other, so that the rotating direction of the supporting plate relative to the second rotating arm is different from the rotating angle of the supporting plate relative to the connecting arm in the relative folding process of the two rotating mechanisms (because the connecting arm is far away from the connecting mechanism based on the extension of the rotating mechanism and the second rotating arm has no distance in the relative folding process of the two rotating mechanisms, the supporting arm rotationally connected with the connecting arm and the second rotating arm needs to balance different position changes of the two rotating mechanisms in the rotating process through different rotating angles relative to the two rotating mechanisms), thereby make two rotary mechanism fold back completely, the interval between two backup pads is from the one end of keeping away from coupling mechanism to the one end that is close to coupling mechanism grow gradually, forms the bending part that great accommodation space held the flexible screen, and can not cause the extrusion or even fold to the flexible screen.

2. According to the rotary hinge provided by the utility model, the second rotating arm is arranged in the middle of the connecting mechanism, the two gear sets are respectively arranged on the two sides of the rotating axis direction of the second rotating arm, and the two damping mechanisms are arranged on the two gear sets, so that the two sides of the middle part of the rotary hinge jointly generate damping, the uniform arrangement of the torsion of the whole rotary hinge can be realized through the arrangement of the damping mechanism at one position, and the structure is simple.

3. According to the rotary hinge provided by the utility model, the stopping mechanisms with two ends respectively sleeved on the rotating shafts of the two second rotating arms are arranged between the two second rotating arms, and the corresponding first stopping blocks and second stopping blocks are respectively arranged on the stopping mechanisms and the second rotating arms, so that when the two supporting plates are relatively flattened or folded to a preset angle (namely the two rotating mechanisms are relatively flattened or folded to the preset angle), the rotation of the two rotating mechanisms is limited, the stability of the rotary hinge when the rotary hinge is unfolded or folded to the preset angle is improved, and the practicability of the rotary hinge is improved.

4. The rotary hinge provided by the utility model has the advantages that the connecting mechanism is arranged to comprise the first connecting cover and the second connecting cover, so that the arc groove for accommodating the first rotating arm and providing the rotating track of the first rotating arm is arranged between the first connecting cover and the second connecting cover, and the second notch of the arc groove (the other notch opposite to the first notch for accommodating the first rotating arm) is arranged on the second connecting cover, so that the second connecting cover is fully utilized as a partial arc of the arc groove, and the thickness of the rotary hinge when the rotary hinge is flattened can be reduced.

5. According to the rotary hinge provided by the utility model, the third stop block extending into the second groove is arranged on the second connecting cover, so that when the two supporting plates are relatively unfolded to the preset angle, the end surface of the first rotary arm is abutted against the first stop block, the end part of the first rotary arm is prevented from protruding out of the second connecting cover when the rotary hinge is unfolded, and the stability of the rotary hinge when the rotary hinge is unfolded is improved.

6. According to the rotary hinge provided by the utility model, the fourth stop block positioned at the first notch is arranged on the second connecting cover, the sliding groove matched with the fourth stop block is arranged on the first rotary arm, so that when the first rotary arm rotates relative to the connecting mechanism, the fourth stop block slides in the sliding groove, and when the two supporting plates are relatively folded to a preset angle, the end surface of the sliding groove is abutted against the fourth stop block to limit the rotation of the first rotary arm, so that the first rotary arm can be prevented from falling out of the arc groove, and the stability of the rotary hinge during folding can be improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a folding chassis according to an embodiment of the present invention;

fig. 2 and 3 are schematic structural views illustrating a rotary hinge according to an embodiment of the present invention when the rotary hinge is flattened to a maximum angle;

fig. 4 and 5 are exploded views of a portion of the structure of the rotary hinge of fig. 2;

FIG. 6 is a schematic structural diagram of the rotary hinge according to the embodiment of the present invention when folded to a maximum angle;

FIG. 7 is a cross-sectional view of the coupling mechanism in the swivel hinge of FIG. 2;

FIG. 8 is a schematic structural diagram of a damping mechanism in a rotary hinge according to an embodiment of the present invention;

FIGS. 9 and 10 are partial schematic structural views of cross-sectional views of a stop mechanism in a swing hinge provided in accordance with an embodiment of the present invention;

FIGS. 11 and 12 are schematic diagrams illustrating an interference relationship between a first relief structure and a second relief structure in a rotary hinge according to an embodiment of the present invention;

description of reference numerals:

1-a first housing;

2-a second housing;

3-a rotating hinge;

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

32-a rotation mechanism;

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

322-a second rotating arm; 3221-slider; 3222-sliding bar; 3223-a second stop block; 3223 a-a third end surface; 3223 b-a fourth end face;

323-connecting arm; 3231-sliding groove; 3232-circular arc groove;

324-a support plate; 3241-slide block; 3242-arc slot;

33-gear set; 331-a first gear; 332-a second gear; 333-third gear; 334-fourth gear;

34-a damping mechanism; 341-a first relief structure; 341 a-first slope; 341 b-second slope; 342-a second relief structure; 343-moving block; 344-fixed block; 345-a resilient member;

35-a stop mechanism; 351-a first stop block; 351 a-a first end face; 351 b-second end face.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

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

The utility model discloses electronic equipment which comprises a folding machine shell and a flexible screen covering the folding machine shell, wherein the folding machine shell is used for supporting the flexible screen, and the flexible screen can be folded or unfolded along with the folding machine shell. The flexible screen can be, but is not limited to, a flexible display screen, a flexible touch display screen and other various flexible components with corresponding functions.

Referring to fig. 1, the foldable housing includes a first housing 1, a second housing 2 and a rotating hinge 3, wherein the rotating hinge 3 is located between the first housing 1 and the second housing 2, and both the first housing 1 and the second housing 2 are connected to the rotating hinge 3.

Referring to fig. 2-6, the rotary hinge 3 includes a connecting mechanism 31 and two rotating mechanisms 32 rotatably connected to two opposite sides of the connecting mechanism 31, and the two rotating mechanisms 32 can rotate toward or away from each other relative to the connecting mechanism 31 to achieve the folding function of the rotary hinge 3. Specifically, the rotation mechanism 32 includes: a first rotating arm 321, a second rotating arm 322, a connecting arm 323, and a supporting plate 324. The first casing 1 and the second casing 2 are connected to two connecting arms 323, respectively.

Referring to fig. 2-6, 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 rotation arm 321 and the connection mechanism 31 may be a real axis or an imaginary axis (fig. 2 to 6 show the rotation axis between the first rotation arm 321 and the connection mechanism 31 as an imaginary axis), and referring to fig. 7, the connection mechanism 31 may be configured to include a first connection cover 311 and a second connection cover 312, and an arc groove 313 may be provided between the first connection cover 311 and the second connection cover 312, so that the first rotation arm 321 is connected to the connection mechanism 31 through the arc groove 313, specifically, an arc portion 3211 may be provided at an end portion of the first rotation arm 321 connected to the connection mechanism 31, and the arc portion 3211 may be fitted into the arc groove 313, so that the rotation connection between the first rotation arm 321 and the connection mechanism 31 may be achieved.

In this application, in order to reduce the thickness of the rotating hinge 3 during flattening, a second notch 313b of the arc groove 313 (a notch in the arc groove 313 that accommodates the first rotating arm 321 is set as a first notch 313a, and the second notch 313b is located at the other end of the arc groove 313 opposite to the first notch 313a, that is, the end of the first rotating arm 321 located in the arc groove 313 slides toward the second notch 313b during flattening of the rotating hinge 3) may be disposed on the second connecting cover 312, that is, a through hole is disposed on the second connecting cover 312, and the through hole is a part of the arc groove 313.

In this application, in order to improve the angular stability of the first rotating arm 321 when the rotating hinge 3 is flattened, so as to improve the stability of the whole rotating hinge 3, a third stop block 3121 may be disposed on the second connecting cover 312, and the third stop block 3121 extends into the second notch 313b, when the two supporting 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, so as to limit the continuous rotation of the two supporting plates 324 (i.e., the two rotating mechanisms 32).

In the present application, in order to prevent the third stop block 3121 from affecting the thickness of the rotation hinge 3, referring to fig. 7, a stop groove 3211a corresponding to the third stop block 3121 may be provided on the end surface of the first rotation arm 321.

In this application, in order to improve the angular stability of the first rotating arm 321 when the rotating hinge 3 is folded and prevent the first rotating arm 321 from coming out of the arc groove 313, thereby improving the stability of the whole rotating hinge 3, a fourth stop block 3122 may be disposed on the second connecting cover 312, and the fourth stop block 3122 is located at the first notch 313a, accordingly, a sliding groove 3211b matched with the fourth stop block 3122 is disposed 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 supporting plates 324 are relatively folded to a preset angle, an end surface of the sliding groove 3211b abuts against the fourth stop block 3122 to limit the rotation of the first rotating arm 321 (limit the rotation of the folding direction thereof).

Referring to fig. 2-6, one end of the second rotating arm 322 is rotatably connected to the connecting mechanism 31, and the other end is slidably connected to the connecting arm 323, and the rotation axis between the first rotating arm 321 and the connecting mechanism 31 is parallel to and not coincident with the rotation axis between the second rotating arm 322 and the connecting mechanism 31. Similarly, the rotation axis between the first rotation arm 321 and the connection mechanism 31 may be a real axis or an imaginary axis. As shown in fig. 6, the second rotating arm 322 and the connecting arm 323 are respectively provided with a matching sliding block 3221 and a sliding groove 3231, so as to realize the sliding connection between the second rotating arm 322 and the connecting arm 323.

Referring to fig. 2-6, the supporting plate 324 is disposed on the first rotating arm 321, the second rotating arm 322 and the connecting arm 323, the supporting plate 324 is rotatably connected to both the connecting arm 323 and the second rotating arm 322, and the rotation axis between the supporting plate 324 and the connecting arm 323 and the rotation axis between the supporting plate 324 and the second rotating arm 322 are parallel to each other and do not overlap. In the present application, the rotation axis between the support plate 324 and the connection arm 323, and the rotation axis between the support plate and the second rotating arm 322 are required to be large (the difference between the rotation angle of the support plate 324 with respect to the connection arm 323 and the rotation angle of the support plate 324 with respect to the second rotating arm 322 is small, but the difference between the movement path lengths of the connection arm 323 with respect to the both is large, in order to balance the change in the position between the connection arm 323 and the second rotating arm 322, in which the connection arm 323 moves away from the connection mechanism 31 during rotation based on the elongation of the rotation mechanism 32, or moves closer to the connection mechanism 31 based on the shortening of the rotation mechanism 32, but the second rotating arm 322 does not change this distance), and therefore, the rotation axis between the support plate 324 and the connection arm 323, and the rotation axis between the support plate 324 and the second rotating arm 322 can be set as virtual axes. Specifically, referring to fig. 4, the supporting plate 324 and the connecting arm 323 may be respectively provided with a circular arc groove 3232 (or a slot) and a slider 3241 (or a slider), and similarly, the supporting plate 324 and the second rotating arm 322 may be respectively provided with a circular arc groove 3242 (or a groove) and a slider 3222 (or a slider), and as shown in fig. 4, an axial diameter of a virtual axis between the supporting plate 324 and the connecting arm 323 (i.e., a diameter of the circular arc groove 3232) is smaller than an axial diameter of a virtual axis between the supporting plate 324 and the second rotating arm 322 (i.e., a diameter of the circular arc groove 3242).

In the present application, the connecting arm 323 rotates relative to the connecting mechanism 31 (an external force is applied to the first casing 1 and/or the second casing 2, so that the connecting arm 323 rotates relative to the connecting mechanism 31), the second rotating arm 322 rotates 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, and the connecting arm 323 and the second rotating arm 322 together drive the supporting plate 324 to rotate, so that the two supporting plates 324 are relatively flattened or folded.

Referring to fig. 3, the second rotating arm 322 may be disposed in the middle of the connecting mechanism 31, and meanwhile, in order to achieve the synchronous flattening or folding of the two rotating mechanisms 32 (i.e. the two rotating mechanisms 32 synchronously rotate in opposite directions), a gear set 33 may be disposed between the two second rotating arms 322, and the specific number and type of gears in the gear set 33 are not limited as long as the two second rotating arms 322 can synchronously rotate in opposite directions. Specifically, the gear set 33 may include an even number of gears (e.g., two or four, etc., shown in fig. 8 as including four gears in the gear set 33). Taking four gears of the gear set 33 including a first gear 331, a second gear 332, a third gear 333, and a fourth gear 334 as an example, as shown in fig. 8, the first gear 331, the second gear 332, the third gear 333, and the fourth gear 334 are sequentially engaged, 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, and more specifically, the first gear 331 and the fourth gear 334 may be respectively sleeved on the rotating shafts of the two second rotating arms 322, or a gear structure may be provided on an outer wall surface (a part or all of the outer wall surface) of an end portion of the two second rotating arms 322 sleeved on the rotating shafts, so as to respectively serve as the first gear 331 and the fourth gear 334.

Referring to fig. 8, in order to achieve uniform setting of the torsion of the entire rotating hinge 3 and simplify the damping mechanism 34 providing the torsion, gear sets 33 may be disposed on both sides of the second rotating arm 322 in the axial direction, and two damping mechanisms 34 corresponding to the two gear sets 33 may be disposed, and 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 first concave-convex structure 341 (for example, if 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, the upper end of the first gear set 33 is provided with the first concave-convex structure 341, 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, the movable block 343 is provided with a second concave-convex structure 342 matching with the first concave-convex structure 341, the movable block 343 can slide along the axial direction of the gear shaft along with the engagement or disengagement of the first concave-convex structure 341 and the second concave-convex structure 342, the fixed block 344 is fixed on the gear shaft, and the elastic member 345 is disposed between the fixed block 344 and the movable block 343. In the present application, the elastic member 345 may be provided on each gear shaft, or the elastic member 345 may be provided only on a part of the gear shafts. In this application, the elastic member 345 may be a spring.

Referring to fig. 9 and 10, in order to further improve the stability of the rotating hinge 3 when the rotating hinge is unfolded or folded to a preset angle, a stopping mechanism 35 may be disposed between the two rotating arms, two ends of the stopping mechanism 35 are respectively sleeved on the rotating shafts of the two second rotating arms 322, and a first stopping block 351 and a second stopping block 3223 are respectively disposed on the stopping mechanism 35 and the second rotating arms 322, so as to limit the rotation of the two rotating mechanisms 32 when the two supporting plates 324 are relatively unfolded or folded to a preset angle. More specifically, the first stop block 351 has a first end surface 351a and a second end surface 351b, the second stop block 3223 has a third end surface 3223a and a fourth end surface 3223b, and taking the second rotating arm 322 on the left side in fig. 9 and fig. 10 as an example, when the second rotating arm 322 rotates in the counterclockwise direction 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, so that the second rotating arm 322 is restricted from continuing to rotate in the counterclockwise direction; when the second rotating arm 322 rotates clockwise and the two supporting plates 324 are folded to a predetermined angle, the second end surface 351b and the fourth end surface 3223b abut against each other, so as to restrict the second rotating arm 322 from rotating clockwise. In the present application, when the number of gears in the gear set 33 is more than two (e.g., four as shown in fig. 8), shaft holes may be provided on both end surfaces of the stopper mechanism 35 corresponding to the two gear sets 33, and gear shafts of intermediate gears (other than the two gears connected to the two second rotating arms 322, respectively) in the gear sets 33 may be provided in the shaft holes.

Referring to fig. 11 and 12, in order to increase the clamping force when the rotating hinge 3 is flattened or rotated to a predetermined angle and reduce the problem of smiling of the whole opening of the electronic device, if it is assumed that two slopes of the concave portion of the first concave-convex structure 341 are a first slope 341a and a second slope 341b, respectively, and the first slope 341a is a 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 a 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 folded, the corresponding relationship between the first concave-convex structure 341 and the second concave-convex structure 342 may be set, so that the convex portion of the second concave-convex structure 342 tends to slide into the concave portion of the first concave-convex structure 341 along the first slope 341a when the two support plates 324 are relatively flattened to a predetermined angle, and when the two supporting plates 324 are folded relatively to a predetermined angle, the convex portion of the second concave-convex structure 342 still tends to slide into the concave portion of the first concave-convex structure 341 along the second slope 341 b.

The movement of the rotary hinge 3 in the present application is described below:

referring to fig. 2-4, a schematic structural diagram of the rotating mechanism 32 in the rotating hinge 3 when the two rotating mechanisms 32 are unfolded to a predetermined angle (i.e. the two supporting plates 324, i.e. the flexible screen in the corresponding electronic device, are unfolded to a predetermined angle, which is taken as an example in the drawing, is shown as 180 degrees), at this time, if a user applies an external force on the connecting arm 323 on the left side to rotate clockwise with respect to the connecting mechanism 31, or applies an external force on the connecting arm 323 on the right side to rotate counterclockwise with respect to the connecting mechanism 31, or applies a force on both the connecting arms 323 (the user generally applies a force on the first casing 1 and/or the second casing 2 in the corresponding electronic device, and based on that the first casing 1 and the second casing 2 are respectively connected with the two connecting arms 323, the force is finally applied on the connecting arms 323), the rotating hinge 3 starts to fold until the two rotating mechanisms 32 rotate to the predetermined angle, taking the preset angle as 0 degree as an example, please refer to fig. 5, which is a schematic structural diagram of the two rotating mechanisms 32 in the rotating hinge 3 rotating to 0 degree.

The following description will be made of the movement of each component in the rotation hinge 3, taking as an example that the user applies an external force to the left connecting arm 323 to rotate it clockwise with respect to the connecting mechanism 31 and the rotation hinge 3 starts to fold:

based on the sliding connection between the connecting arm 323 and one end of the second rotating arm 322, and the rotating connection between the other end of the second rotating arm 322 and the connecting mechanism 31, the connecting arm 323 drives the second rotating arm 322 to rotate synchronously relative to the connecting mechanism 31, and the rotating shaft between the connecting arm 323 and the connecting mechanism 31 is the rotating shaft between the second rotating arm 322 and the connecting mechanism 31; the connecting arm 323 is also connected with the connecting mechanism 31 through the first rotating arm 321, so that 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, the length of the part of the first rotating arm 321 extending out of the connecting mechanism 31 in the rotation process is increased more, the connecting arm 323 is driven to slide relative to the second rotating arm 322, the connecting arm 323 is far away from the connecting mechanism 31, and the included angle between the connecting arm 323 and the first rotating arm 321 is increased; based on the rotational connection between the supporting plate 324 and the connecting arm 323, and the rotational connection between the supporting plate 324 and the second rotating arm 322, the supporting plate 324 is driven to rotate relative to the connecting mechanism 31 by the two, and based on the distance between the connecting arm 323 and the connecting mechanism 31 without the distance between the second rotating arm 322, the supporting plate 324 is driven to rotate clockwise relative to the connecting arm 323 and rotate counterclockwise relative to the second rotating arm 322.

The rotary hinge 3 provided by the utility model is characterized in that a connecting mechanism 31 and two rotary mechanisms 32 which are rotatably connected to two opposite sides of the connecting mechanism 31 are arranged, the rotary mechanisms 32 are arranged, one end of a first rotary arm 321 is rotatably connected with a connecting arm 323, the other end of the first rotary arm is rotatably connected with the connecting mechanism 31, a second rotary arm 322 is arranged in the rotary hinge, one end of the second rotary arm is also rotatably connected with the connecting mechanism 31, but the other end of the second rotary arm is slidably connected with the connecting arm 323, the rotary axes between the first rotary arm 321 and the second rotary arm 322 and the connecting mechanism 31 are parallel to each other but not coincident with each other, the rotary mechanisms 32 can be extended in the relative folding process (the included angle between the connecting arm 323 and the first rotary arm 321 is increased, the second rotary arm 322 slides out of the connecting arm 323), the rotary hinge is shortened in the relative flattening process (the included angle between the connecting arm 323 and the first rotary arm 321 is reduced, and the second rotating arm 322 slides into the connecting arm 323) to avoid the acting force of compression or tension on the flexible screen; by arranging the supporting plate 324 to be rotatably connected with the connecting arm 323, the supporting plate 324 can be far away from the connecting mechanism 31 along with the elongation of the whole rotating structure, and then by rotatably connecting the supporting plate 324 with the second rotating arm 322, and the rotation axes between the supporting plate 324 and the connecting arm 323, and the rotation axes between the supporting plate 324 and the second rotating arm 322 are parallel to each other and do not coincide with each other, so that the rotation direction of the supporting plate 324 relative to the second rotating arm 322 is different from the rotation angle of the supporting plate 324 relative to the connecting arm 323 during the relative folding of the two rotating mechanisms 32 (since the connecting arm 323 is far away from the connecting mechanism 31 based on the elongation of the rotating mechanism 32 and the second rotating arm 322 does not have the distance during the relative folding of the two rotating mechanisms 32, the supporting arm rotatably connected with both the connecting arm 323 and the second rotating arm 322 needs to pass through different rotation angles relative to the two rotating mechanisms, balance the change of the two at different positions of the rotating mechanism 32 during the rotating process), so that after the two rotating mechanisms 32 are completely folded, the distance between the two supporting plates 324 is gradually increased from the end far away from the connecting mechanism 31 to the end close to the connecting mechanism 31, and a larger accommodating space is formed for accommodating the bent part of the flexible screen, and the flexible screen cannot be squeezed or even folded.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the utility model.

Claims (10)

1. A swivel hinge, comprising: a connecting mechanism (31) and two rotating mechanisms (32) rotatably connected to opposite sides of the connecting mechanism (31), the rotating mechanisms (32) comprising:

the connecting mechanism comprises 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) are both connected with the connecting mechanism (31) in a rotating mode, and rotating axes between the first rotating arm (321) and the connecting mechanism (31) and between the second rotating arm (322) and the connecting mechanism (31) are parallel and do not coincide;

a connecting arm (323) rotatably connected to the other end of the first rotating arm (321) and slidably connected to the other end of the second rotating arm (322);

the supporting plate (324) is arranged on the first rotating arm (321), the second rotating arm (322) and the connecting arm (323), the supporting plate (324) is rotatably connected with the connecting arm (323) and the second rotating arm (322), and a rotating axis between the supporting plate (324) and the connecting arm (323) and a rotating axis between the supporting plate (324) and the second rotating arm (322) are parallel to each other and do not overlap with each other; the connecting arm (323) rotates relative to the connecting mechanism (31) to drive 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), and the connecting arm (323) and the second rotating arm (322) drive the supporting plates (324) to rotate together, so that the two supporting plates (324) are relatively flattened or folded.

2. The rotary hinge according to claim 1, wherein the second rotary arm (322) is disposed in the middle of the connecting mechanism (31), and two gear sets (33) are respectively disposed on two sides of the second rotary arm (322) in the direction of the rotation axis, so that the two second rotary arms (322) synchronously rotate in opposite directions;

the rotary hinge structure further includes two damping mechanisms (34) provided corresponding to the two gear sets (33), the damping mechanisms (34) including:

a first relief structure (341), the end of one gear set (33) remote from the other gear set (33) being provided with the first relief structure (341);

the movable block (343) is sleeved on a gear shaft of the gear set (33), a second concave-convex structure (342) is arranged 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 along with the clamping or separation of the first concave-convex structure (341) and the second concave-convex structure (342);

and the fixed block (344) is fixed on the gear shaft, and an elastic piece (345) is arranged between the fixed block (344) and the movable block (343).

3. The rotary hinge according to claim 2, wherein a stopping mechanism (35) is disposed between the two second rotating arms (322), and two ends of the stopping 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 a corresponding first stop block (351) and a corresponding second stop block (3223) so as to limit the rotation of the two rotating mechanisms (32) when the two supporting plates (324) are relatively unfolded or folded to a preset angle.

4. The swivel hinge according to claim 3, wherein the connection mechanism (31) comprises a first connection cover (311) and a second connection cover (312), wherein an arc groove (313) is provided between the first connection cover (311) and the second connection cover (312), and the first swivel arm (321) is connected with the connection mechanism (31) through the arc groove (313); the arc groove (313) is provided with a first notch (313a) for receiving the first rotating arm (321) and a second notch (313b) located at the other end opposite to the first notch (313a), and the second notch (313b) is located on the second connecting cover (312).

5. The swivel hinge according to claim 4, characterized in that a third stop block (3121) is provided on the second connecting cover (312), the third stop block (3121) extends into the second slot (313b), and when the two support plates (324) are relatively flattened to a predetermined angle, the end surface of the first swivel arm (321) abuts against the first stop block (351).

6. The swivel hinge according to claim 5, characterized in that the end face of the first swivel arm (321) is provided with a stop groove (3211a) corresponding to the third stop block (3121).

7. The rotary hinge according to any one of claims 4 to 6, wherein a fourth stop block (3122) is provided on the second connecting cover (312), the fourth stop block (3122) being located at the first notch (313 a); the first rotating arm (321) is provided with a sliding groove (3211b) matched with the fourth stop block (3122), 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 supporting plates (324) are relatively folded 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 swivel hinge according to claim 3, wherein the recess in the first relief structure (341) has a first ramp (341a) and a second ramp (341 b); when the two support plates (324) are relatively flattened, the convex part in the second concave-convex structure (342) 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 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 (341 a); when the two supporting plates (324) are folded relatively, the convex part in the second concave-convex structure (342) tends to slide into the concave part in the first concave-convex structure (341) along the second slope surface (341b), and when the two supporting plates (324) are folded relatively 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 (341 b).

9. A folding chassis, characterized in that it is 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, said rotating hinge (3) being located between said first shell (1) and said second shell (2), said first shell (1) and said second shell (2) being connected to two of said connecting arms (323), respectively.

10. An electronic device, comprising a flexible screen and a folding housing according to 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 portion of the flexible screen is covered on the rotating hinge (3) and is unfolded or folded along with the rotating hinge (3).

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