Hinge and folding electronic equipment

Abstract

The utility model provides a hinge and folding electronic equipment, and relates to the technical field of electronic equipment accessories. The hinge comprises a rotating piece which is opened and closed along with the hinge and rotates around the center axis of the rotating piece, and a first thread structure is constructed on the inner wall of the rotating piece; the synchronous rod is matched with the rotating piece and can be driven by the rotating piece to move synchronously with the rotating piece; the sliding part is configured to generate linear motion in the axial direction of the sliding part, an external thread of the sliding part is matched with the first thread structure, and the lead angle of the external thread and the first thread structure is larger than the friction angle; the lead angle of the second thread structure of the outer wall of the lead screw piece and the internal thread of the sliding piece is smaller than the friction angle. Through the arrangement, bidirectional locking of the hinge is achieved, and the locking effect and the locking force of the hinge are improved.

Description

TECHNICAL FIELD

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

[0002] Foldable electronic devices such as foldable mobile phones and foldable tablets have been popularized in the market. As a core component of foldable electronic devices, the hinge plays a key role in the realization of folding function.

[0003] The locking effect of the hinge on the market is poor, and it is difficult to realize bidirectional locking, which affects the user experience. CONTENT OF THE INVENTION

[0004] In view of this, the present application provides a hinge and a foldable electronic device, which can realize bidirectional locking of the hinge and improve the locking effect.

[0005] Specifically, the technical solutions include the following:

[0006] In a first aspect, the present application provides a hinge, which comprises:

[0007] A rotating member, which rotates around its central axis when the hinge is opened and closed, and the inner wall of the rotating member is provided with a first thread structure;

[0008] A synchronous rod, which cooperates with the rotating member and can move synchronously with the rotating member under the driving of the rotating member;

[0009] A sliding member, which is configured to produce linear motion along its axial direction, the inner wall of the sliding member is provided with an inner thread, the outer wall of the sliding member is provided with an outer thread, the sliding member is at least partially inserted into the rotating member, the outer thread cooperates with the first thread structure, and the thread angle of the outer thread and the first thread structure is greater than the friction angle, the linear motion of the sliding member drives the rotating member to rotate around its central axis, and in turn drives the synchronous rod to rotate synchronously with the rotating member;

[0010] A screw rod, the outer wall of the screw rod is provided with a second thread structure, the screw rod is inserted into the sliding member and the second thread structure cooperates with the inner thread, the thread angle of the second thread structure and the inner thread is less than the friction angle, and the sliding member is self-locked when the screw rod stops rotating.

[0011] In the technical scheme provided in the application, since the sliding member is configured to generate linear motion along the self axis, and the thread angle of the outer thread of the sliding member and the first thread structure of the rotating member is greater than the friction angle, when the screw rod member rotates around the self central axis, the linear motion of the sliding member is driven, the linear motion of the sliding member further drives the rotating member to rotate around the self central axis, the synchronous rod is synchronously rotated with the rotating member, the folding or unfolding action is realized, the thread angle of the second thread structure and the inner thread of the sliding member is less than the friction angle, when the screw rod member stops rotating, the linear motion of the sliding member cannot reversely drive the screw rod member to rotate, thereby the self locking of the sliding member is realized, the rotating member and the synchronous rod stop rotating, and finally the bidirectional locking of the hinge is realized, the locking effect and locking force of the hinge are improved, and the use experience of the user is improved.

[0012] In some possible implementation manners, the hinge further comprises a fixing member, the fixing member is located on the side of the rotating member away from the synchronous rod, the fixing member has an inner cavity, a part of the sliding member is inserted into the inner cavity, and the fixing member is used for limiting the motion of the sliding member along the self axis.

[0013] In the technical scheme provided in the application, the fixing member is arranged to limit the sliding member in the circumferential direction, so that the sliding member can drive the rotating member to rotate through linear motion, and the unfolding or folding action of the hinge is realized.

[0014] In some possible implementation manners, the sliding member is provided with a boss structure at one end in the inner cavity, and the cross-sectional shape of the boss structure and the cross-sectional profile shape of the inner cavity are both non-circular.

[0015] In the technical scheme provided in the application, the cross-sectional shape of the boss structure and the cross-sectional profile shape of the inner cavity are both non-circular, so that the fixing member limits the sliding member in the circumferential direction, and the sliding member cannot rotate around the self central axis relative to the fixing member under the cooperation of the boss structure and the inner cavity.

[0016] In some possible implementation manners, the fixing member has two inner cavities separated from each other, and the rotating member, the synchronous rod, the sliding member and the screw rod member are all two, and the two rotating members, the two synchronous rods, the two sliding members and the two screw rod members are symmetrically arranged respectively.

[0017] In the technical scheme provided in the application, the two synchronous rods are symmetrically arranged along the arrangement direction of the two inner cavities of the fixing member, one of the synchronous rods is used for being connected with the first folding main body, and the other synchronous rod is used for being connected with the second folding main body, and the unfolding or folding action of the folding electronic equipment is realized through the relative motion of the two synchronous rods.

[0018] In some possible implementation manners, the hinge further comprises a connecting piece, the connecting piece comprising a first connecting portion and a second connecting portion connected to each other, the first connecting portion being connected to the rotating piece, and the second connecting portion being connected to the synchronous rod.

[0019] In the technical scheme provided in the application, the connecting piece is arranged, the first connecting portion and the second connecting portion are used to realize linkage between the rotating piece and the synchronous rod, and synchronous movement of the rotating piece and the synchronous rod is realized. When the rotating piece rotates, the connecting piece and the synchronous rod rotate synchronously at the same angular velocity.

[0020] In some possible implementation manners, the rotating piece is provided with a socket, the first connecting portion is embedded in the socket, and the cross-sectional shape of the first connecting portion and the cross-sectional profile shape of the socket are both non-circular.

[0021] In the technical scheme provided in the application, the cross-sectional shape of the first connecting portion and the cross-sectional profile shape of the socket are set to be non-circular, so that relative rotation between the first connecting portion and the socket is difficult to occur, the synchronism between the first connecting portion and the rotating piece is ensured, and the connecting piece and the rotating piece rotate at the same angular velocity.

[0022] In some possible implementation manners, the synchronous rod is provided with an inner hole, the second connecting portion is embedded in the inner hole, and the cross-sectional shape of the second connecting portion and the cross-sectional profile shape of the inner hole are both non-circular.

[0023] In the technical scheme provided in the application, the cross-sectional shape of the second connecting portion and the cross-sectional profile shape of the inner hole are set to be non-circular, so that relative rotation between the second connecting portion and the inner hole is difficult to occur, the synchronism between the second connecting portion and the synchronous rod is ensured, and the connecting piece and the synchronous rod rotate at the same angular velocity.

[0024] In some possible implementation manners, the first connecting portion is provided with a relief hole, and the relief hole is used to avoid the end portion of the screw rod.

[0025] In the technical scheme provided in the application, the relief hole is arranged, so that interference between the screw rod and the connecting piece is prevented, smooth rotation of the screw rod is ensured, and the space occupied by the hinge in the axial direction is saved, and the axial dimension of the hinge is reduced.

[0026] In a second aspect, the application provides a folding electronic device, which comprises the hinge provided in any one of the embodiments of the first aspect, and further comprises a first folding body and a second folding body, the hinge is arranged between the first folding body and the second folding body, the first folding body and the second folding body are rotationally connected through the hinge, and the synchronization rod of the hinge is connected with the first folding body and / or the second folding body, so that the first folding body and the second folding body are driven to realize unfolding or folding action under the driving of the synchronization rod.

[0027] In some possible embodiments, the synchronization rod is two, and the synchronization rod comprises a first transmission part and a second transmission part connected with each other;

[0028] The first transmission part is in transmission connection with the rotating piece and can rotate around the central axis thereof under the driving of the rotating piece;

[0029] The second transmission part is located on one side of the first transmission part in the radial direction, one of the synchronization rods is connected with the first folding body through the second transmission part, and the other of the synchronization rods is connected with the second folding body through the second transmission part, so that the first folding body and the second folding body are driven to realize unfolding or folding action under the driving of the second transmission part.

[0030] In the technical scheme provided in the application, the rotating piece transmits power to the synchronization rod, so that the first transmission part and the second transmission part are synchronously rotated, and then the first folding body and the second folding body are driven to rotate, thereby realizing the opening and closing action of the folding electronic device.

[0031] In some possible embodiments, the folding electronic device further comprises a driving piece, the driving piece is in driving connection with the screw rod of the hinge, and the driving piece is used to drive the screw rod to rotate around the central axis thereof, and then drive the first transmission part of the synchronization rod to rotate, so that the second transmission part drives the first folding body and the second folding body to relatively unfold or relatively fold.

[0032] In the technical scheme provided in the application, by arranging the driving piece, the screw rod is driven to rotate through the driving piece, and then power is transmitted to the synchronization rod through the transmission path of the hinge, so that the second transmission part of the synchronization rod drives the first folding body and / or the second folding body to move, thereby realizing the automatic opening and closing action of the folding electronic device, and improving the automation degree of the folding electronic device. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0034] Figure 1 An exploded view of the hinge provided in the embodiments of the present application;

[0035] Figure 2 A sectional view of the hinge provided in the embodiments of the present application.

[0036] The reference signs in the drawings respectively represent:

[0037] 1-screw member; 11-second threaded structure;

[0038] 2-fixing member; 21-internal cavity;

[0039] 3-sliding member; 31-internal thread; 32-external thread; 33-convex structure;

[0040] 4-rotating member; 41-first threaded structure; 42-socket;

[0041] 5-connecting member; 51-first connecting part; 511-avoidance hole; 52-second connecting part;

[0042] 6-synchronization rod; 61-internal hole; 62-first transmission part; 63-second transmission part.

[0043] The above drawings have shown the specific embodiments of the present application, and the following will have more detailed description. These drawings and textual description are not intended to limit the scope of the concept of the present application by any means, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be described clearly and completely in the following by combining the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort are within the scope of protection of the present application.

[0045] The positional nouns in the embodiments of the present application, such as "upper", "lower", "side", etc., are generally based on the relative relationship of the positions shown in the drawings, and these positional nouns are used only to more clearly describe the structure and the relationship between structures, and are not intended to describe absolute positions. When the product is placed in different attitudes, the positions may change, for example, "upper" and "lower" may be interchanged.

[0046] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by one of ordinary skill in the art.

[0047] In order to make the technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0048] Folding mobile phones, folding tablets and other folding electronic devices have been popularized in the market, and hinges, as the core components of folding electronic devices, play a key role in the realization of folding functions.

[0049] Folding electronic devices usually have multiple use states, such as a folded state, an unfolded state, a hovering state (between the folded state and the unfolded state), etc. In the related art, in the hovering state of the folding electronic device, the hinge can only achieve one-way locking (for example, only prevent the folding electronic device from being accidentally unfolded), and the locking effect is poor, which affects the user's experience.

[0050] As shown in Figure 1 and Figure 2 , the hinge provided by the embodiments of the present application includes a rotating piece 4, a synchronization rod 6, a sliding piece 3 and a screw rod piece 1.

[0051] In some embodiments, the hinge structure is applied to a folding electronic device, the folding electronic device includes a first folding body and a second folding body, the hinge is arranged between the first folding body and the second folding body, and the first folding body and the second folding body are rotationally connected through the hinge to relatively unfold or fold the first folding body and the second folding body.

[0052] Optionally, the central axes of the rotating piece 4, the synchronization rod 6 and the screw rod piece 1 are located on the same straight line, and the rotating piece 4, the synchronization rod 6 and the screw rod piece 1 are all configured to rotate around the central axis of the screw rod piece 1.

[0053] The rotating piece 4 follows the opening and closing of the hinge and rotates around its own central axis, and the inner wall of the rotating piece 4 is constructed with a first threaded structure 41. Wherein, "the rotating piece 4 follows the opening and closing of the hinge" means that in the process of the overall hinge producing the opening and closing action, the rotating piece 4 rotates around its own central axis.

[0054] The synchronization rod 6 cooperates with the rotating piece 4 and can move synchronously with the rotating piece 4 under the driving of the rotating piece 4.

[0055] Optionally, the synchronous rod 6 is rigidly connected with one end of the rotating member 4, for example, the synchronous rod 6 and the rotating member 4 can be connected by welding, bonding, threaded connection or the like to realize synchronous movement.

[0056] The sliding member 3 is configured to generate linear motion along the axial direction of the sliding member 3, the inner wall of the sliding member 3 is configured with an inner thread 31, the outer wall of the sliding member 3 is configured with an outer thread 32, the sliding member 3 is at least partially inserted into the rotating member 4, the outer thread 32 is matched with the first thread structure 41, and the thread angle of the outer thread 32 and the first thread structure 41 is greater than the friction angle, the linear motion of the sliding member 3 drives the rotating member 4 to rotate around the central axis of the rotating member 4, and further drives the synchronous rod 6 to rotate synchronously with the rotating member 4.

[0057] The outer wall of the screw rod member 1 is configured with a second thread structure 11, the screw rod member 1 is inserted into the sliding member 3 and the second thread structure 11 is matched with the inner thread 31, the thread angle of the second thread structure 11 and the inner thread 31 is less than the friction angle, and the sliding member 3 is self-locked when the screw rod member 1 stops rotating.

[0058] In some embodiments, the synchronous rod 6 is connected with the first folding body or the second folding body, and the rotation of the rotating member 4 and the synchronous rod 6 can drive the rotation of the first folding body or the second folding body, so as to realize the unfolding or folding action of the folding electronic device.

[0059] As shown in Figure 1 The first thread structure 41 of the rotating member 4 is an inner thread structure, the second thread structure 11 of the screw rod member 1 is an outer thread structure, the rotating member 4 is threadedly connected with the sliding member 3 through the first thread structure 41, and the screw rod member 1 is threadedly connected with the sliding member 3 through the second thread structure 11.

[0060] For example, the sliding member 3 is limited by the guide structure, so that the sliding member 3 cannot rotate around the central axis of the sliding member 3, but can move linearly along the axial direction of the sliding member 3.

[0061] In the hinge provided by the embodiments of the present application, the rotating member 4, the screw rod member 1 and the synchronous rod 6 have fixed degrees of freedom in the axial direction, but can rotate around the central axis of the screw rod member 1; the sliding member 3 has a fixed degree of freedom in the circumferential direction, but can move linearly along the axial direction of the sliding member 3.

[0062] The thread angle is also called the helix angle or the lead angle, which is the included angle between the tangent of the helix and the plane perpendicular to the thread axis. The friction angle is the equivalent included angle generated by the friction in the thread connection.

[0063] In some embodiments, the thread angle of the outer thread 32 of the sliding member 3 and the first thread structure 41 of the rotating member 4 is 19.8°, and the friction angle of the outer thread 32 of the sliding member 3 and the first thread structure 41 of the rotating member 4 is 8.53°.

[0064] By setting the thread angle of the outer thread 32 of the sliding member 3 and the first thread structure 41 of the rotating member 4 to be greater than the friction angle, the threaded connection between the sliding member 3 and the rotating member 4 does not have a self-locking effect, so that when the sliding member 3 moves linearly along the axial direction, the rotating member 4 can be driven to rotate around the central axis by the sliding member 3 under the cooperation of the first thread structure 41 and the outer thread 32, and further drive the synchronous rod 6 to rotate synchronously.

[0065] In some embodiments, the thread angle of the second thread structure 11 of the screw rod member 1 and the inner thread 31 of the sliding member 3 is 4.57°, and the friction angle of the second thread structure 11 of the screw rod member 1 and the inner thread 31 of the sliding member 3 is 8.53°.

[0066] By setting the thread angle of the second thread structure 11 of the screw rod member 1 and the inner thread 31 of the sliding member 3 to be less than the friction angle, the threaded connection between the screw rod member 1 and the sliding member 3 has a self-locking effect, so that the linear motion of the sliding member 3 cannot drive the screw rod member 1 to rotate in the reverse direction, and when the screw rod member 1 stops rotating, the sliding member 3 is locked, and the rotating member 4 cannot rotate, thereby realizing the overall locking function of the hinge, and the locking force is large, effectively improving the shaking phenomenon of the synchronous rod 6.

[0067] In some embodiments, the screw rod member 1 is used for driving connection with a driving member such as a motor, and the transmission sequence of the hinge is: under the driving of the driving member, the screw rod member 1 rotates around the central axis; under the cooperation of the inner thread 31 of the sliding member 3 and the second thread structure 11 of the screw rod member 1, the sliding member 3 moves linearly along the axial direction; under the cooperation of the outer thread 32 of the sliding member 3 and the first thread structure 41 of the rotating member 4, the rotating member 4 is driven to rotate around the central axis by the sliding member 3, and further drives the synchronous rod 6 connected with the rotating member 4 to rotate synchronously.

[0068] The hinge provided by the embodiments of the present application has the advantages that the sliding member 3 is configured to move linearly along the axial direction, and the thread angle of the outer thread 32 of the sliding member 3 and the first thread structure 41 of the rotating member 4 is greater than the friction angle, so that when the screw rod member 1 rotates around the central axis, the sliding member 3 is driven to move linearly, and the linear motion of the sliding member 3 further drives the rotating member 4 to rotate around the central axis, so that the synchronous rod 6 rotates synchronously with the rotating member 4, and the folding or unfolding action is realized; by setting the thread angle of the second thread structure 11 and the inner thread 31 of the sliding member 3 to be less than the friction angle, when the screw rod member 1 stops rotating, the linear motion of the sliding member 3 cannot drive the screw rod member 1 to rotate in the reverse direction, thereby realizing the self-locking of the sliding member 3, and further stopping the rotating member 4 and the synchronous rod 6 from rotating, finally realizing the bidirectional locking of the hinge, improving the locking effect and locking force of the hinge, and improving the user experience.

[0069] In some embodiments, the hinge further comprises a fixing member 2 located on the side of the rotating member 4 away from the synchronous rod 6, the fixing member 2 has an inner cavity 21 in which a part of the sliding member 3 is inserted, and the fixing member 2 is used to limit the axial movement of the sliding member 3.

[0070] As shown in Figure 2 , the fixing member 2 is located on the left side of the rotating member 4, and the left end of the sliding member 3 is accommodated in the inner cavity 21 of the fixing member 2, and the right end of the sliding member 3 is accommodated in the rotating member 4.

[0071] Exemplarily, the fixing member 2 is fixedly installed in the interior of the foldable electronic device.

[0072] Under the limitation of the fixing member 2, the sliding member 3 can produce linear motion relative to the fixing member 2, but cannot produce rotation relative to the fixing member 2 around the central axis thereof.

[0073] In this embodiment, by arranging the fixing member 2, the sliding member 3 is circumferentially limited, so as to ensure that the sliding member 3 can drive the rotating member 4 to rotate through linear motion, thereby realizing the unfolding or folding action of the hinge.

[0074] In some embodiments, one end of the sliding member 3 located in the inner cavity 21 is provided with a boss structure 33, and the cross-sectional shape of the boss structure 33 and the cross-sectional profile shape of the inner cavity 21 are both non-circular.

[0075] It can be understood that the cross section is obtained by cutting with a plane perpendicular to the axial direction of the screw rod member 1.

[0076] As shown in Figure 2 , the boss structure 33 is located at the left end of the sliding member 3, and the boss structure 33 protrudes radially outward relative to the outer side wall of the sliding member 3.

[0077] The cross-sectional shape of the boss structure 33 and the cross-sectional profile shape of the inner cavity 21 are the same, and specifically can be non-circular shapes such as cam shape, triangular shape, rectangular shape, and elliptical shape.

[0078] By setting the cross-sectional shape of the boss structure 33 and the cross-sectional profile shape of the inner cavity 21 as non-circular, the circumferential limitation of the fixing member 2 to the sliding member 3 is realized, and under the cooperation of the boss structure 33 and the inner cavity 21, the sliding member 3 cannot produce rotation relative to the fixing member 2 around the central axis thereof.

[0079] The cross-sectional profile size of the inner cavity 21 can be the same as or slightly larger than the cross-sectional profile size of the boss structure 33, so as to ensure the circumferential limitation effect of the fixing member 2 to the sliding member 3.

[0080] In some embodiments, the fixing member 2 has two mutually separated inner cavities 21, and the rotating member 4, the synchronous rod 6, the sliding member 3 and the screw rod member 1 are all two, and the two rotating members 4, the two synchronous rods 6, the two sliding members 3 and the two screw rod members 1 are symmetrically arranged respectively.

[0081] As shown in the figure, Figure 1 The synchronous rod 6 comprises a first transmission part 62 and a second transmission part 63 connected with each other, the first transmission part 62 is in transmission connection with the rotating member 4 and can rotate around the center axis thereof under the driving of the rotating member 4, and the second transmission part 63 is located on one side of the first transmission part 62 in the radial direction. The first transmission part 62 is substantially in the shape of a cylinder, and the second transmission part 63 is substantially in the shape of a plate, and the second transmission part 63 is used for being rigidly connected with the first folding main body or the second folding main body, so as to drive the first folding main body and the second folding main body to be folded or unfolded relative to each other.

[0082] As shown in the figure, Figure 1 Each inner cavity 21 of the fixing member 2 corresponds to one sliding member 3, and the two synchronous rods 6 are symmetrically arranged along the arrangement direction of the two inner cavities 21 of the fixing member 2, wherein the second transmission part 63 of one of the synchronous rods 6 is used for being connected with the first folding main body, and the second transmission part 63 of the other synchronous rod 6 is used for being connected with the second folding main body, and through the relative movement of the two synchronous rods 6, the unfolding or folding action of the folding electronic device is realized.

[0083] In some embodiments, the hinge further comprises a connecting member 5, and the connecting member 5 comprises a first connecting part 51 and a second connecting part 52 connected with each other, the first connecting part 51 is connected with the rotating member 4, and the second connecting part 52 is connected with the synchronous rod 6.

[0084] In this embodiment, by arranging the connecting member 5, the linkage between the rotating member 4 and the synchronous rod 6 is realized by the first connecting part 51 and the second connecting part 52, and the synchronous movement of the rotating member 4 and the synchronous rod 6 is realized, and when the rotating member 4 rotates, the connecting member 5 and the synchronous rod 6 rotate synchronously with the rotating member 4 at the same angular velocity.

[0085] In this embodiment, the transmission sequence of the hinge is as follows: under the driving of the driving member, the screw rod member 1 rotates around the center axis thereof; under the cooperation between the inner thread 31 of the sliding member 3 and the second thread structure 11 of the screw rod member 1, the sliding member 3 moves linearly along the axial direction thereof; under the cooperation between the outer thread 32 of the sliding member 3 and the first thread structure 41 of the rotating member 4, the rotating member 4 is driven by the sliding member 3 to rotate around the center axis thereof, and then the synchronous rod 6 is driven by the connecting member 5 to rotate synchronously.

[0086] In some embodiments, the rotating member 4 is provided with a socket 42, the first connecting part 51 is embedded in the socket 42, and the cross-sectional shape of the first connecting part 51 and the cross-sectional profile shape of the socket 42 are both non-circular.

[0087] The cross-sectional shape of the first connecting part 51 and the cross-sectional profile shape of the insertion hole 42 are the same, and can be a non-circular shape such as a cam shape, a triangular shape, a rectangular shape, an elliptical shape, etc.

[0088] By setting the cross-sectional shape of the first connecting part 51 and the cross-sectional profile shape of the insertion hole 42 as a non-circular shape, it is difficult for relative rotation to occur between the first connecting part 51 and the insertion hole 42, and the synchronization between the first connecting part 51 and the rotating part 4 is ensured, so that the connecting part 5 and the rotating part 4 rotate at the same angular velocity.

[0089] In some embodiments, the first transmission part 62 of the synchronization rod 6 is provided with an inner hole 61, and the second connecting part 52 is embedded in the inner hole 61, and the cross-sectional shape of the second connecting part 52 and the cross-sectional profile shape of the inner hole 61 are both non-circular shapes.

[0090] The cross-sectional shape of the second connecting part 52 and the cross-sectional profile shape of the inner hole 61 are the same, and can be a non-circular shape such as a cam shape, a triangular shape, a rectangular shape, an elliptical shape, etc.

[0091] By setting the cross-sectional shape of the second connecting part 52 and the cross-sectional profile shape of the inner hole 61 as a non-circular shape, it is difficult for relative rotation to occur between the second connecting part 52 and the inner hole 61, and the synchronization between the second connecting part 52 and the synchronization rod 6 is ensured, so that the connecting part 5 and the synchronization rod 6 rotate at the same angular velocity.

[0092] In some embodiments, the first connecting part 51 is provided with a relief hole 511, and the relief hole 511 is used to avoid interference with the end of the lead screw part 1.

[0093] As shown in Figure 2 The relief hole 511 is located at one end of the first connecting part 51 away from the second connecting part 52, the relief hole 511 is in the form of a blind hole, and the hole diameter of the relief hole 511 is greater than the size of the end of the lead screw part 1.

[0094] In this embodiment, by providing the relief hole 511, interference between the lead screw part 1 and the connecting part 5 can be prevented, and smooth rotation of the lead screw part 1 is ensured, and at the same time, it is also beneficial to save the space occupied by the hinge in the axial direction and reduce the axial size of the hinge.

[0095] The folding electronic device can be a folding mobile phone, a folding tablet computer, a folding notebook computer, or the like.

[0096] The folding electronic device can be a folding mobile phone, a folding tablet computer, a folding notebook computer, or the like.

[0097] In some embodiments, the synchronization rod 6 comprises a first transmission part 62 and a second transmission part 63 connected to each other, the first transmission part 62 is in transmission connection with the rotating piece 4 and can rotate around the center axis thereof under the driving of the rotating piece 4, and the second transmission part 63 is located on one side of the first transmission part 62 in the radial direction, one of the synchronization rods 6 is connected to the first folding main body through the second transmission part 63, and the other synchronization rod 6 is connected to the second folding main body through the second transmission part 63, so that the first folding main body and the second folding main body realize the unfolding or folding action under the driving of the second transmission part 63.

[0098] Through the above arrangement, the rotating piece 4 transmits power to the synchronization rod 6, so that the first transmission part 62 and the second transmission part 63 rotate synchronously, and then drive the first folding main body and the second folding main body to rotate, thereby realizing the opening and closing action of the folding electronic device.

[0099] In some embodiments, the folding electronic device further comprises a driving piece, the driving piece is in driving connection with the screw piece 1 of the hinge, and the driving piece is used to drive the screw piece 1 to rotate around the center axis thereof, and then drive the first transmission part 62 of the synchronization rod 6 to rotate, so as to drive the first folding main body and the second folding main body to relatively unfold or relatively fold through the second transmission part 63.

[0100] Through the arrangement of the driving piece, the screw piece 1 is driven to rotate by the driving piece, and then the power is transmitted to the synchronization rod 6 through the transmission path of the hinge, so that the synchronization rod 6 drives the first folding main body and / or the second folding main body to move through the second transmission part 63, thereby realizing the automatic opening and closing action of the folding electronic device and improving the automation degree of the folding electronic device.

[0101] In the present application, the terms “first” and “second” are only used for description purposes, and cannot be understood as indicating or implying relative importance. The term “a plurality of” refers to two or more, unless otherwise explicitly limited.

[0102] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the application cover any and all variations of the application that come within the scope of the

[0103] It is understood that the application is not limited to the precise construction herein disclosed and shown in the drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is limited only by the claims that follow.

Claims

1. A hinge, characterized in that, The hinge comprises: a rotating member (4) which rotates around its central axis following the opening and closing of the hinge, the inner wall of the rotating member (4) being provided with a first threaded structure (41); a synchronous rod (6) which cooperates with the rotating member (4) and can move synchronously with the rotating member (4) under the drive of the rotating member (4); a sliding member (3) which is configured to produce linear motion along its axial direction, the inner wall of the sliding member (3) being provided with an inner thread (31), the outer wall of the sliding member (3) being provided with an outer thread (32), the sliding member (3) being at least partially inserted into the rotating member (4), the outer thread (32) cooperating with the first threaded structure (41), and the thread angle of the outer thread (32) and the first threaded structure (41) being greater than the friction angle, the linear motion of the sliding member (3) driving the rotating member (4) to rotate around its central axis, and in turn driving the synchronous rod (6) to rotate synchronously with the rotating member (4); a screw member (1) whose outer wall is provided with a second threaded structure (11), the screw member (1) being inserted into the sliding member (3) and the second threaded structure (11) cooperating with the inner thread (31), the thread angle of the second threaded structure (11) and the inner thread (31) being smaller than the friction angle, and the sliding member (3) being self-locked when the screw member (1) stops rotating.

2. Hinge according to claim 1, characterized in that The hinge further comprises a fixing member (2) which is located on the side of the rotating member (4) away from the synchronous rod (6), the fixing member (2) having an inner cavity (21), a part of the sliding member (3) being inserted into the inner cavity (21), and the fixing member (2) being used to limit the axial motion of the sliding member (3).

3. Hinge according to claim 2, characterized in that The end of the sliding member (3) located in the inner cavity (21) is provided with a boss structure (33), and the cross-sectional shape of the boss structure (33) and the cross-sectional profile shape of the inner cavity (21) are both non-circular.

4. The hinge of claim 2, wherein The fixing member (2) has two mutually separated inner cavities (21), and the rotating member (4), the synchronous rod (6), the sliding member (3) and the screw member (1) are all two, and the two rotating members (4), the two synchronous rods (6), the two sliding members (3) and the two screw members (1) are arranged symmetrically respectively.

5. The hinge of claim 1, wherein The hinge further comprises a connecting member (5) which comprises a first connecting part (51) and a second connecting part (52) connected to each other, the first connecting part (51) being connected to the rotating member (4), and the second connecting part (52) being connected to the synchronous rod (6).

6. Hinge according to claim 5, characterized in that The rotating member (4) is provided with a socket (42), the first connecting part (51) being embedded in the socket (42), and the cross-sectional shape of the first connecting part (51) and the cross-sectional profile shape of the socket (42) are both non-circular.

7. The hinge of claim 5, wherein The synchronizing rod (6) is provided with an inner hole (61), and the second connecting part (52) is embedded in the inner hole (61), and the cross-sectional shape of the second connecting part (52) and the cross-sectional profile shape of the inner hole (61) are both non-circular.

8. The hinge of claim 5, wherein The first connecting part (51) is provided with a relief hole (511) for avoiding the end of the screw rod (1).

9. A foldable electronic device, characterized by The folding electronic device comprises the hinge according to any one of claims 1 to 8, and further comprises a first folding body and a second folding body, the hinge is arranged between the first folding body and the second folding body, the first folding body and the second folding body are rotationally connected through the hinge, the synchronizing rod (6) of the hinge is connected with the first folding body and / or the second folding body, so that the first folding body and the second folding body are driven to realize unfolding or folding action by the synchronizing rod (6).

10. The foldable electronic device of claim 9, wherein, The synchronizing rod (6) is two, and the synchronizing rod (6) comprises a first transmission part (62) and a second transmission part (63) connected with each other. The first transmission part (62) is in transmission connection with the rotating member (4) and can rotate around the center axis thereof under the driving of the rotating member (4). The second transmission part (63) is located on one side of the first transmission part (62) in the radial direction, one of the synchronizing rods (6) is connected with the first folding body through the second transmission part (63), and the other synchronizing rod (6) is connected with the second folding body through the second transmission part (63), so that the first folding body and the second folding body are driven to realize unfolding or folding action by the second transmission part (63).

11. The foldable electronic device of claim 10, wherein, The folding electronic device further comprises a driving member in driving connection with the screw rod (1) of the hinge, the driving member is used to drive the screw rod (1) to rotate around the center axis thereof, and in turn drive the first transmission part (62) of the synchronizing rod (6) to rotate, so that the second transmission part (63) drives the first folding body and the second folding body to relatively unfold or relatively fold.

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