Hinge structure and terminal equipment

Abstract

The invention relates to the field of hinges, and provides a hinge structure and terminal equipment. The hinge structure comprises a hinge base, wherein a containing space is formed in the hinge base; the supporting plate covers the accommodating space and is provided with two first notches; the synchronous module is partially located in the containing space and comprises two symmetrical synchronous swing arms and a transmission mechanism, main body parts and transmission gears of the synchronous swing arms are located in the containing space, the main body parts correspond to the first notches, and when the synchronous swing arms rotate to be in a flattened state, the first surfaces of the main body parts are flush with the corresponding first notches; when the synchronous swing arm rotates to a folded state, the main body part spans the corresponding first notch, and the two first surfaces are opposite to each other. According to the hinge structure provided by the invention, the main body part corresponds to the first notch, and when the synchronous swing arm is in the flattened state, the first surface of the main body part is flush with the corresponding first notch, so that the first notch is prevented from becoming a weak point of the hinge structure in the flattened state, and it is ensured that the flexible screen can be flatly arranged on the supporting plate.

Description

Technical Field

[0001] The present application relates to the field of hinge technology, and in particular to a hinge structure and a terminal device. Background Art

[0002] In recent years, with breakthroughs in flexible display technology and consumers' dual demands for portability and a larger screen experience, foldable display devices (such as foldable phones and tablets) have gradually become a key development direction in the electronic product field. These devices use a hinge structure to fold and unfold the screen, making it easy to carry in the folded state and providing a larger display area in the unfolded state to meet diverse usage scenarios. As a key component of foldable devices, the hinge design directly affects the product's reliability, durability, and user experience.

[0003] In the related art, a hinge structure has a cavity or a gap at the position of the synchronous gear. When the hinge structure is in an unfolded state, the gap becomes a weak point of the hinge structure. Summary of the Invention

[0004] In a first aspect, an embodiment of the present application provides a hinge structure, comprising: The hinge base is formed with a receiving space; A support plate, covering the accommodation space and provided with two first notches; a synchronization module, partially located in the accommodation space, comprising two symmetrical synchronization swing arms and a transmission mechanism, wherein the synchronization swing arm comprises a main body, a swinging portion located in a first direction of the main body, and a transmission gear located in a second direction of the main body, the main body and the transmission gear being located in the accommodation space and the main body corresponding to the first notch, the transmission gears of the two synchronization swing arms being connected by the transmission mechanism, and the first direction and the second direction being orthogonal; and When the two synchronous swing arms rotate to a flattened state, the first surfaces of the two main bodies are flush with the corresponding first notches; when the two synchronous swing arms rotate to a folded state, the two main bodies span the corresponding first notches and the two first surfaces are opposite.

[0005] According to the hinge structure provided by the embodiment of the present application, the synchronous swing arm further includes: a first cam located in a third direction of the main body, the third direction being opposite to the second direction and orthogonal to the first direction; The synchronization module further includes a resistance module, and the resistance module includes an elastic member, a first limiting member and a cam plate; Wherein, the elastic member is arranged between the first limiting member and the cam plate, and two second cams are formed on the cam plate to respectively abut against the first cams of the two synchronous swing arms.

[0006] According to the hinge structure provided by the embodiment of the present application, the third direction of the main body forms a concave support portion, and the synchronous swing arm further includes: a connecting block; The support portion is provided with two first plug-in grooves at the two end portions on both sides of the recess, and the support portion is provided with a second plug-in groove penetrating the support portion on the side opposite to the recess. The first cam is formed with a protrusion abutting against the two end portions and a plug-in piece cooperating with the second plug-in groove, and the protrusion has a third plug-in groove. When the plug-in piece is inserted into the second plug-in groove, the two first plug-in grooves and part of the third plug-in groove are opposite to each other, and the connecting block is arranged in the two first plug-in grooves and the third plug-in groove.

[0007] According to the hinge structure provided in an embodiment of the present application, the hinge structure further includes: A first rotating shaft passes through the synchronous swing arm and the resistance module, and the synchronous swing arm and the resistance module can rotate relative to the first rotating shaft.

[0008] According to the hinge structure provided in an embodiment of the present application, the support portion is a convex structure having the concave on one side, the first cam is formed with a convexity abutting against the concave, the convexity structure and the side opposite to the first cam are adapted to each other, so that the convexity on the first cam is fixed to the concave via the connecting block, and the side of the first cam opposite to the convexity structure is spliced ​​to the convexity structure; The protruding structure and the first cam form a first through hole for the first rotating shaft to pass through.

[0009] According to the hinge structure provided by the embodiment of the present application, the protrusion structure is formed in a first arc shape, and the protrusion is formed in a second arc shape; When the first cam is spliced ​​onto the protruding structure, the first arc and the second arc form the first through hole, and the radius of the first arc is smaller than the radius of the second arc.

[0010] According to the hinge structure provided in an embodiment of the present application, the transmission mechanism includes: a first synchronous gear and a second synchronous gear; The first synchronous gear includes a second rotating shaft and a first meshing portion constructed on the second rotating shaft, the second synchronous gear includes a third rotating shaft and a second meshing portion constructed on the third rotating shaft, and the transmission gears of the two synchronous swing arms are meshed and transmitted with the second meshing portion through the first meshing portion.

[0011] The hinge structure provided in an embodiment of the present application further includes: a second limiting member and a third limiting member; Both ends of the second rotating shaft and the third rotating shaft are rotatably disposed between the second limiting member and the third limiting member respectively; The second limiting member is provided with a second through hole, one end of the first rotating shaft of the two synchronous swing arms is rotatably disposed on the second limiting member through the second through hole, and the other end of the first rotating shaft is rotatably disposed in the cam plate; A first limiting block and a second limiting block are provided on the circumference of the second through hole for contacting the transmission gear; When the two synchronous swing arms rotate to a flattened state, the first limit block abuts against the transmission gear to limit the synchronous swing arms from further extending outward; When the two synchronous swing arms rotate to a folded state, the second limit block abuts against the transmission gear to limit the synchronous swing arms from further folding inward.

[0012] According to the hinge structure provided in the embodiment of the present application, two second notches are provided on the support plate; The hinge structure further comprises: an auxiliary module, partially located in the accommodation space, comprising an auxiliary base and two auxiliary swing arms, wherein the auxiliary base is provided with two arc-shaped slide grooves, one end of the two auxiliary swing arms is rotatably disposed in the corresponding arc-shaped slide grooves, and the other ends of the two auxiliary swing arms pass through the corresponding second notches; When the two auxiliary swing arms are rotated to a flattened state, the second surfaces on the two auxiliary swing arms close the corresponding second notches; when the two auxiliary swing arms are rotated to a folded state, the two auxiliary swing arms span the corresponding second notches and the two second surfaces are opposite.

[0013] According to the hinge structure provided in the embodiment of the present application, when the two auxiliary swing arms are further unfolded along the unfolding direction on the basis of the flattened state, the two auxiliary swing arms come into contact with the auxiliary base to limit the auxiliary swing arms.

[0014] The hinge structure provided in an embodiment of the present application further includes: Two middle frame fixing blocks and two door panels are respectively located on both sides of the synchronization module, and each of the middle frame fixing blocks is connected to the door panel on the same side; The two middle frame fixing blocks are both provided with mounting grooves, the two auxiliary swing arms are respectively rotatably connected to the middle frame fixing blocks on both sides, and the main bodies of the two synchronous swing arms are respectively arranged in the mounting grooves of the middle frame fixing blocks on both sides.

[0015] The hinge structure provided in an embodiment of the present application further includes: One or more connecting members, wherein the support plate is provided with one or more connecting holes, and the connecting parts of the one or more connecting members are connected to the hinge base through the one or more connecting holes; One or more shielding members are disposed to cover the one or more connecting holes.

[0016] In a second aspect, an embodiment of the present application further provides a terminal device, comprising: a first device body, a second device body, a flexible screen, and a hinge structure; The first device body and the second device body are rotatably connected via the hinge structure, so that the terminal device can switch between a flat state and a folded state, one end of the flexible screen is connected to the first device body, and the other end of the flexible screen is connected to the second device body; When the terminal device is in a folded state, the support plate squeezes the flexible screen to deform toward the main body of the two synchronous swing arms. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 It is a schematic diagram of the exploded structure of the entire hinge structure provided by one embodiment of the present application.

[0019] Figure 2 It is a schematic diagram of the exploded structure of the hinge structure part provided in one embodiment of the present application.

[0020] Figure 3 This is a schematic diagram of a hinge structure provided by an embodiment of the present application when unfolded.

[0021] Figure 4 This is a schematic diagram of a hinge structure provided by an embodiment of the present application when folded.

[0022] Figure 5 This is a schematic diagram of a foldable flexible screen with a hinge structure provided in one embodiment of the present application.

[0023] Figure 6 This is one of the schematic diagrams of the flexible screen folding provided in an embodiment of the present application.

[0024] Figure 7 This is the second schematic diagram of the flexible screen folding provided in an embodiment of the present application.

[0025] Figure 8This is a schematic diagram of a synchronous swing arm provided in one embodiment of the present application.

[0026] Figure 9 This is a schematic diagram of a synchronization module provided in one embodiment of the present application.

[0027] Figure 10 This is a schematic diagram of a synchronization module and an auxiliary module provided in one embodiment of the present application.

[0028] Figure 11 This is one of the schematic diagrams of the local position of the synchronization module provided in one embodiment of the present application.

[0029] Figure 12 This is the second schematic diagram of the local position of the synchronization module provided in one embodiment of the present application.

[0030] Figure 13 This is a schematic diagram of the interior of a synchronous swing arm provided in one embodiment of the present application.

[0031] Figure 14 It is a schematic diagram of the internal cross-section of a synchronous swing arm provided in one embodiment of the present application.

[0032] Figure 15 This is a schematic diagram of a transmission mechanism provided in one embodiment of the present application.

[0033] Figure 16 This is one of the schematic diagrams of the first cam and the second cam in operation provided by an embodiment of the present application.

[0034] Figure 17 This is the second schematic diagram of the first cam and the second cam in operation provided by an embodiment of the present application.

[0035] Figure 18 This is a schematic diagram of a second limiting member provided in one embodiment of the present application.

[0036] Figure 19 This is a side view of a hinge structure provided by an embodiment of the present application.

[0037] Figure 20 This is a top view of a hinge structure provided by an embodiment of the present application.

[0038] Figure 21 This is a schematic diagram of a device terminal provided in one embodiment of the present application. DETAILED DESCRIPTION

[0039] To make the technical solutions and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0040] In the description of the embodiments of the present application, it should be noted that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for the purpose of facilitating the description of the embodiments of the present application and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of this application can be understood in specific circumstances.

[0042] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] In the description of this specification, the descriptions with reference to the terms "exemplarily", "for example" or "optional" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0044] The following combination Figures 1 to 21 The hinge structure 1 and terminal device provided in the embodiment of the present application are described, and the terminal device includes but is not limited to a mobile phone, a vehicle-mounted terminal, a tablet computer, a notebook computer, a PDA, a wearable device, and a pedometer, etc. The embodiment of the present application does not specifically limit the specific type of the terminal device.

[0045] This embodiment provides a hinge structure 1, such as Figures 1 to 20 As shown, the hinge structure 1 includes a hinge base 11 , a support plate 12 and a synchronization module 13 . The hinge base 11 is formed with a accommodating space; the support plate 12 is covered on the accommodating space and is provided with two first notches 121; the synchronization module 13, partially located in the accommodating space, includes two symmetrical synchronization swing arms 131 and a transmission mechanism 132, the synchronization swing arm 131 includes a main body 1311, a swinging part 1312 located in the first direction of the main body 1311 and a transmission gear 1313 located in the second direction of the main body 1311, the main body 1311 and the transmission gear 1313 are located in the accommodating space and the main body 1311 corresponds to the first notch 121, the transmission gears 1313 of the two synchronization swing arms 131 are connected by the transmission mechanism 132, and the first direction and the second direction are orthogonal; when the two synchronization swing arms 131 rotate to a flattened state, the first surfaces of the two main bodies 1311 are flush with the corresponding first notches 121; when the two synchronization swing arms 131 rotate to a folded state, the two main bodies 1311 span the corresponding first notches 121 and the two first surfaces are opposite.

[0046] In this embodiment, the hinge base 11 serves as a bearing body and has an accommodating space inside. The support plate 12 is provided with two first notches 121, which cover the accommodating space and serve as a rigid support surface. Part of the synchronization module 13 is located in the accommodating space, and the other part of the synchronization module 13 is located outside the accommodating space, for example, on both sides of the support plate 12. The main body 1311 of the synchronization swing arm 131 fills and flushes the first notch 121 in the unfolded state of the hinge, and supports the components on the support plate 12, such as the flexible screen 2, to avoid the first notch 121 and the corresponding position of the flexible screen 2 becoming weak points in the strength of the whole machine in the unfolded state. The swinging part 1312 realizes the control of the hinge structure 1 to be flattened, folded or in the middle state. The transmission gear 1313 is located in the second direction of the main body 1311 and is connected to the transmission mechanism 132 to realize the linkage of the two synchronization swing arms 131.

[0047] In some examples, such as Figure 5 As shown, a flexible screen 2 can be provided on the support plate 12, and the flexible screen can be controlled to be in a flattened, folded or intermediate state by opening and closing the two synchronous swing arms 131 of the synchronization module 13. The support plate 12 cooperates with the synchronization module 13 to support the entire flexible screen 2 and ensure that there are no weak points in the strength of the flexible screen 2 and the hinge structure 1 in the flattened state.

[0048] When the two synchronous swing arms 131 are in the flattened state, the first surface of the main body 1311 will be flush with the corresponding first notch 121, thereby filling the first notch 121. At this time, under the action of the swing part 1312, the flexible screen 2 is unfolded, so that the flexible screen 2 can be placed flatly on the support plate 12, avoiding the problem of setting the synchronous gear at the position corresponding to the first notch 121 in the related art, which may cause problems such as gear sharp points when the hinge is flattened. In addition, when the hinge is flattened, the first surface of the main body 1311 is flush with the corresponding first notch 121, reducing the risk of the first notch 121 being present during tests such as the ball drop test and the pen drop test, as well as during actual use.

[0049] When the two synchronous swing arms 131 rotate to the folded state, the main body 1311 will cross the corresponding first notch 121, and the two first surfaces will face each other. At this time, under the action of the swinging portion 1312, the flexible screen 2 is squeezed and folded by the swinging portions 1312 on both sides. In the embodiment of the present application, the first surfaces of the two main bodies 1311 will support the two sides of the flexible screen 2, and the support plate 12 will support the curved bottom surface of the flexible screen 2 after bending. The first surface and the support plate 12 jointly provide support for the flexible screen 2, and the support plate 12 exerts a squeezing force on the curved bottom surface of the flexible screen 2, causing the curved bottom surface to deform. This method not only helps protect the flexible screen 2, but also maintains its shape stability in the folded state.

[0050] For example, when the synchronous swing arm 131 is rotated to the folded state, as shown in FIG. Figure 6 As shown, the flexible screen 2 and the support plate 12 are in an interference state. In the related art, a groove is usually provided at the corresponding position of the support plate 12 to prevent the support plate 12 from squeezing the flexible screen due to interference. However, the embodiment of the present application determines the interference amount Δ (generally Δ≤0.1mm) based on the material and stress condition of the specific flexible screen 2 combined with actual verification, and forms an extrusion force on the curved bottom surface of the flexible screen 2 when supported by the support plate 12 in the folded state. Figure 7 As shown, under the extrusion force of the support plate 12, the bottom of the flexible screen 2 takes on a more rounded teardrop shape. Compared to the method of providing a groove without extrusion, the extrusion of the support plate 12 can make the bottom of the flexible screen 2 more rounded. The extrusion of the support plate 12 increases the width of the teardrop formed by the flexible screen 2 in the folded state compared to the non-extrusion method, which can reduce the risk of creases on the flexible screen 2. At the same time, the two main bodies 1311 use the support of the first surface to ensure the stability of the flexible screen 2 in the folded state.

[0051] In some embodiments, as Figure 2 、 Figure 8 、 Figure 9 、 Figure 16 and Figure 17 As shown, the synchronous swing arm 131 also includes: a first cam 1314, the first cam 1314 is located in the third direction of the main body 1311, the third direction is opposite to the second direction and is orthogonal to the first direction; the synchronous module 13 also includes a resistance module, the resistance module includes an elastic member 133, a first limit member 134 and a cam plate 135; the elastic member 133 is arranged between the first limit member 134 and the cam plate 135, and two second cams 1351 are formed on the cam plate 135, which respectively abut against the first cams 1314 of the two synchronous swing arms 131.

[0052] In this embodiment, the first cam 1314 is provided with a plurality of first protrusions 13141 and a plurality of first recesses 13142 arranged in a circular pattern. The second cam 1351 is provided with a plurality of second protrusions 13511 and a plurality of second recesses 13512 arranged in a circular pattern. When one synchronous swing arm 131 rotates relative to the hinge base 11, the transmission gear 1313 drives the transmission mechanism 132, causing the other synchronous swing arm 131 to rotate synchronously. The plurality of first protrusions 13141 and the plurality of first recesses 13142 of the first cam 1314 abut against the plurality of second protrusions 13511 and the plurality of second recesses 13512 of the second cam 1351. This abutment determines the degree of compression of the cam plate 135 on the elastic member 133, thereby adjusting the rotational resistance of the synchronous swing arm 131 at different deployment angles. Furthermore, the elastic force generated by the compression of the elastic member 133 can maintain the synchronous swing arm 131 in a hovering (intermediate) state.

[0053] like Figure 16 As shown, when the first protrusion 13141 and the second protrusion 13511 are at least partially abutted (that is, the first recessed portion 13142 and the second recessed portion 13512 are at least partially abutted), the cam plate 135 squeezes the elastic member 133, so that the elastic member 133 is squeezed into a deformed state, and the elastic member 133 provides an elastic force, which prevents the first cam 1314 from continuing to move relative to the second cam 1351, so that the hinge structure 1 can maintain a hovering state between flattening and folding.

[0054] like Figure 17 As shown, when the first cam 1314 continues to move relative to the second cam 1351 until the first protrusion 13141 and the second protrusion 13511 are completely abutted against each other (at this time, the first recessed portion 13142 and the second recessed portion 13511 have no abutment), the deformation of the elastic member 133 and the elastic force provided reach a peak value, and the first cam 1314 continues to move relative to the second cam 1351, and the deformation and elastic force provided by the elastic member 133 will continue to decrease until the first protrusion 13141 and the second recessed portion 13511 are completely abutted, and the second protrusion 13511 and the first recessed portion 13142 are completely abutted, and the elastic member 133 no longer produces any deformation or provides any elastic force, and at this time the hinge structure is in a folded or flattened state.

[0055] This embodiment achieves precise adjustment of the rotational resistance of the synchronous swing arm 131 through the cooperation of the cam and the resistance module, which not only enables the hinge structure 1 to hover stably between flattening and folding, but also improves the flexibility and convenience of use.

[0056] In some embodiments, as Figure 2 、 Figures 8 to 13 As shown, the third direction of the main body 1311 forms a support portion 136 with a recess, and the synchronous swing arm 131 also includes a connecting block 137; the support portion 136 is provided with two first plug-in grooves 1361 at the two ends on both sides of the recess, and the support portion 136 is provided with a second plug-in groove 1362 passing through the support portion 136 on the side opposite to the recess, and the first cam 1314 is formed with a protrusion abutting on the two ends and a connector that cooperates with the second plug-in groove 1362, the protrusion has a third plug-in groove 1363, and when the connector is inserted into the second plug-in groove 1362, the two first plug-in grooves 1361 and part of the third plug-in groove 1363 are opposite, and the connecting block 137 is arranged in the two first plug-in grooves 1361 and the third plug-in groove 1363.

[0057] For example, main body 1311, as the primary support structure for synchronous swing arm 131, must withstand significant impact and torsional forces. Therefore, materials with a high yield strength (>1800 MPa) and an elongation greater than 5, such as certain high-strength alloy steels, can be selected to ensure sufficient strength and toughness. Main body 1311 has a recessed support portion 136 formed in the third direction to provide space for connection with first cam 1314.

[0058] The first cam 1314 primarily interacts with the cam plate 135 in the resistance module and requires excellent wear resistance. Therefore, a wear-resistant metal material, such as hardened steel or ceramic-coated steel, can be selected. The first cam 1314 is provided with a protrusion and a connector. The protrusion is designed to abut the end of the support portion 136, while the connector is designed to engage with the second insertion groove 1362 of the support portion 136. The support portion 136 has two first insertion grooves 1361 on either side of the recess, which accommodate a portion of the connecting block 137. A second insertion groove 1362 is provided on the opposite side of the recess, extending through the support portion 136, for engaging the connector of the first cam 1314. The protrusion on the first cam 1314 has a third insertion groove 1363. When the connector is inserted into the second insertion groove 1362, the third insertion groove 1363 faces the two first insertion grooves 1361, forming a complete connection space.

[0059] The connecting block 137 is wedge-shaped and fits snugly into the first and third insertion slots 1361, 1363, achieving a secure connection through a mortise and tenon joint. The advantage of the mortise and tenon joint is its removability. When repairs or component replacements are required, the connecting block 137 can be easily disassembled to separate the main body 1311 and the first cam 1314.

[0060] In this embodiment, the support portion 136 is fixed to one side of the first cam 1314 through a connector and the second plug-in slot 1362, and the support portion 136 is fixed to the other side of the first cam 1314 through a connecting block 137 provided in the first plug-in slot 1361 and the third plug-in slot 1363, thereby effectively fixing the support portion 136 and the first cam 1314, avoiding cost, size and other problems caused by conventional welding and the like, and being able to withstand greater force and torque, thereby ensuring the stability and reliability of the synchronous swing arm 131.

[0061] In some embodiments, as Figure 2 As shown, the hinge structure 1 further includes: a first rotation shaft 14 , which passes through the synchronous swing arm 131 and the resistance module. The synchronous swing arm 131 and the resistance module can rotate relative to the first rotation shaft 14 .

[0062] Specifically, the first rotational axis 14 extends through the synchronous swing arm 131 and the resistance module, providing both connection and support. The first rotational axis 14 ensures that the synchronous swing arm 131 and the resistance module can freely rotate relative to it. Through the connection to the first rotational axis 14, the resistance module interacts with the synchronous swing arm 131 to provide the required resistance or support.

[0063] When an external force acts on the synchronous swing arm 131, it rotates relative to the first rotation axis 14. During this rotation, the resistance module provides corresponding resistance or support force, thereby controlling the movement speed of the synchronous swing arm 131. By adjusting the parameters of the resistance module (such as the stiffness of the elastic member 133 and the parameters of the cam), different movement characteristics and effects can be achieved.

[0064] To prevent the first rotating shaft 14 from shaking relative to the synchronous swing arm 131 and the resistance module, an E-hook 142 can be set at at least one end of the first rotating shaft 14 so that the first rotating shaft 14 can be fixed to the synchronous swing arm 131 and the resistance module along its axial direction to prevent the first rotating shaft 14 from shaking during rotation.

[0065] In some embodiments, as Figure 11 、 Figure 12 and Figure 13 As shown, the support portion 136 is a convex structure with a recess on one side, and a protrusion is formed on the first cam 1314 to abut against the recess. The protrusion structure and the side opposite to the first cam 1314 are adapted to each other so that the protrusion on the first cam 1314 is fixed to the recess through the connecting block 137, and the side opposite to the protrusion structure of the first cam 1314 is spliced ​​on the protrusion structure, and the protrusion structure and the first cam 1314 form a first through hole 141 for the first rotating shaft 14 to pass through.

[0066] In this embodiment, support portion 136 is not completely flat or uniform, but rather has a portion recessed inwardly, with the recess forming a flat surface that abuts first cam 1314. The protrusion on first cam 1314 is secured to the recess via a connecting block 137. Connecting block 137 is a separate component that strengthens the connection between the protrusion and the recess, ensuring they do not easily separate. A first through-hole 141 is formed between the protrusion structure and first cam 1314. First through-hole 141 is intended to allow the first rotation shaft 14 to pass through, allowing the protrusion structure and the first protrusion to rotate relative to the first rotation shaft 14.

[0067] In this embodiment, Figure 14As shown, the raised structure is formed with a first arc 1364, and the raised structure is formed with a second arc 1365. The radius of the first arc 1364 is R2, and the radius of the second arc 1365 is R1. When the first cam 1314 is spliced ​​onto the raised structure, the first arc 1364 and the second arc 1365 form the first through hole 141. The radius R2 of the first arc 1364 is smaller than the radius R1 of the second arc 1365.

[0068] The raised structure and the sidewall of the first cam 1314 have the same angle, which helps guide them during assembly and allows for easier and more accurate docking. A gap is reserved between the sidewalls, which is typically small, for example, less than 0.02mm. This ensures tightness and stability of the assembly while allowing for a certain degree of manufacturing tolerance and assembly flexibility.

[0069] When the first cam 1314 is mounted on the protruding structure, the first arc 1364 and the second arc 1365 cooperate with each other to form the first through hole 141. The first through hole 141 is used to pass the first rotating shaft 14 to achieve the rotation or fixing function of the first rotating shaft 14.

[0070] For example, the radius of the first arc 1364 is R2, and the radius of the second arc 1365 is R1, where the radius R2 of the first arc 1364 is smaller than the radius R1 of the second arc 1365. This ensures that the first through hole 141 formed during assembly is sufficiently large to prevent problems such as the first rotating shaft 14 not being able to be installed due to assembly errors or rotational jams.

[0071] In some embodiments, as Figure 10 and Figure 15 As shown, the transmission mechanism 132 includes: a first synchronous gear 1321 and a second synchronous gear 1322; the first synchronous gear 1321 includes a second rotating shaft 13211 and a first meshing portion 13212 constructed on the second rotating shaft 13211, and the second synchronous gear 1322 includes a third rotating shaft 13221 and a second meshing portion 13222 constructed on the third rotating shaft 13221, and the transmission gears 1313 of the two synchronous swing arms 131 are meshed and transmitted through the first meshing portion 13212 and the second meshing portion 13222.

[0072] In this embodiment, the second meshing portion 13222 of the second synchronous gear 1322 meshes with the first meshing portion 13212 of the first synchronous gear 1321, thereby transmitting rotational power. When one synchronous swing arm 131 rotates relative to the hinge base 11, the transmission gear 1313 of the synchronous swing arm 131 drives the first meshing portion 13212 and the second meshing portion 13222 to rotate, thereby driving the transmission gear 1313 of the other synchronous swing arm 131 to rotate, causing the other synchronous swing arm 131 to rotate synchronously relative to the hinge base 11.

[0073] In some embodiments, as Figure 2 and Figure 18 As shown, the hinge structure 1 further includes a second limiting member 15 and a third limiting member 16. The ends of the second rotating shaft 13211 and the third rotating shaft 13221 are rotatably disposed between the second limiting member 15 and the third limiting member 16, respectively. The second limiting member 15 is provided with a second through-hole 153, through which one end of the first rotating shaft 14 of the two synchronous swing arms 131 is rotatably disposed on the second limiting member 15, while the other end of the first rotating shaft 14 is rotatably disposed in the cam plate 135. A first limiting block 151 and a second limiting block 152 are provided circumferentially around the second through-hole 153 for abutting the transmission gear 1313. When the two synchronous swing arms 131 rotate to a flattened state, the first limiting block 151 abuts the transmission gear 1313 to limit further outward extension of the synchronous swing arms 131. When the two synchronous swing arms 131 rotate to the folded state, the second limit block 152 abuts against the transmission gear 1313 to limit the synchronous swing arms 131 from further folding inward.

[0074] In this embodiment, the second and third stoppers 15 and 16 serve as support and positioning components for the second and third rotational axes 13211 and 13221, and are respectively disposed at both ends of the second and third rotational axes 13211 and 13221. The second and third rotational axes 13211 and 13221 are rotatable relative to the second and third stoppers 15 and 16.

[0075] At the same time, one end of the first rotation axis 14 of the two synchronous swing arms 131 is rotatably mounted on the second stopper 15 via the second through hole 153, thereby connecting the synchronous swing arms 131 to the second stopper 15. The first stopper 151 and the second stopper 152 form a semi-annular structure. The first side of the semi-annular structure is used to limit the outward expansion of the synchronous swing arms 131, and the second side of the semi-annular structure is used to limit the inward folding of the synchronous swing arms 131.

[0076] When the two synchronous swing arms 131 rotate to a flattened position, the first side of the semi-annular structure abuts the transmission gear 1313 of the synchronous swing arms 131, preventing the synchronous swing arms 131 from further extending outward, thereby limiting the maximum flattened position. Generally, the first stopper 134 of the semi-annular structure is vertically positioned at the center of the bottom of the second through hole 153 to ensure that the two synchronous swing arms 131 can be flattened.

[0077] When the two synchronous swing arms 131 rotate to the folded state, the second side of the semi-annular structure abuts the transmission gear 1313 of the synchronous swing arms 131, preventing the synchronous swing arms 131 from folding further inward, thereby protecting the hinge structure 1 from damage caused by excessive folding. Generally, the second stopper 15 on the semi-annular structure is vertically disposed at the middle position of the top of the second through hole 153 to ensure that the two synchronous swing arms 131 can fold to the maximum position.

[0078] Based on the above embodiments, in some embodiments, such as Figure 1 and Figure 2 As shown, the support plate 12 is provided with two second notches 122. The hinge structure 1 also includes an auxiliary module 17. The auxiliary module 17 is partially located in the accommodation space and includes an auxiliary base 171 and two auxiliary swing arms 172. The auxiliary base 171 is provided with two arc-shaped sliding grooves 1711. One end of the two auxiliary swing arms 172 is rotatably disposed in the corresponding arc-shaped sliding grooves 1711, and the other end of the two auxiliary swing arms 172 passes through the corresponding second notches 122. When the two auxiliary swing arms 172 are rotated to a flattened state, the second surfaces of the two auxiliary swing arms 172 close the corresponding second notches 122. When the two auxiliary swing arms 172 are rotated to a folded state, the two auxiliary swing arms 172 span the corresponding second notches 122, and the two second surfaces face each other.

[0079] Specifically, the support plate 12 is provided with two second notches 122. The position and size of the second notches 122 match the design of the auxiliary swing arms 172 to ensure smooth rotation of the auxiliary swing arms 172. One end of each auxiliary swing arm 172 is rotatably disposed in a corresponding arcuate slot 1711. The other end of each auxiliary swing arm 172 passes through the corresponding second notches 122 to interact with the environment or components outside the support plate 12.

[0080] In this embodiment, the auxiliary swing arm 172, also known as a virtual swing arm, cooperates with the synchronous swing arm 131 to coordinate the movement of the hinge structure 1. When the two auxiliary swing arms 172 rotate to a flattened state, their second surfaces close the corresponding second notches 122, flattening them and allowing the flexible screen 2 to be placed flat on the support plate 12. This avoids the potential exposure of the second notches 122 in the flattened state, a problem that can occur in related art, reducing the risk of the second notches 122 being exposed during ball-drop and pen-drop tests and in actual use.

[0081] When the two auxiliary swing arms 172 rotate to the folded state, they span the corresponding second notches 122, and the two second surfaces are opposite, so that the second surfaces of the auxiliary swing arms 172 can be supported on both sides of the flexible screen 2, thereby helping to protect the flexible screen 2 and maintain the stability of its shape in the folded state.

[0082] The hinge structure 1 provided in this embodiment can switch its shape more smoothly through the cooperation between the auxiliary swing arm 172 and the synchronous swing arm 131, as well as the design of the auxiliary base 171 and the arc-shaped slide groove 1711.

[0083] In order to limit the movement of the auxiliary swing arm 172, a limiting piece can be set on the auxiliary base 171, so that when the auxiliary swing arm 172 is further expanded along the expansion direction on the basis of the flattened state, the two auxiliary swing arms 172 will conflict with the limiting piece on the auxiliary base 171 to limit the auxiliary swing arm 172.

[0084] Specifically, a third limiting member 16 and a fourth limiting member may be respectively provided at both ends of each arc-shaped sliding groove 1711 of the auxiliary base 171 .

[0085] When the auxiliary swing arm 172 rotates to the flattened position, the end of the auxiliary swing arm 172 comes into surface contact with the vertical surface of the third stopper 16, precisely limiting the deployment angle of the auxiliary swing arm 172 to 180°±0.5°. If the auxiliary swing arm 172 attempts to move in the over-deployment direction, the third stopper 16 contacts the end of the auxiliary swing arm 172, limiting the deployment of the auxiliary swing arm 172.

[0086] When the folding angle reaches 90°, the auxiliary swing arm 172 contacts the fourth stopper, limiting the folding angle of the auxiliary swing arm 172 to 90°±0.5°. When the auxiliary swing arm 172 attempts to fold further, the fourth stopper restricts further rotation of the auxiliary swing arm 172, thereby limiting the folding of the auxiliary swing arm 172.

[0087] In some embodiments, as Figure 1 、 Figure 2 and Figure 19 As shown, the hinge structure 1 also includes two middle frame fixing blocks 18 and two door panels 19 respectively located on both sides of the synchronization module 13, and each middle frame fixing block 18 is connected to the door panel 19 on the same side; the two middle frame fixing blocks 18 are provided with mounting grooves, and the two auxiliary swing arms 172 are respectively rotatably connected to the middle frame fixing blocks 18 on both sides, and the main bodies 1311 of the two synchronization swing arms 131 are respectively arranged in the mounting grooves of the middle frame fixing blocks 18 on both sides.

[0088] In this embodiment, the synchronization module 13 is centrally located, with two middle frame fixing blocks 18 positioned on either side. Each middle frame fixing block 18 is connected to the door panel 19 on the same side, forming a stable structural framework. Both middle frame fixing blocks 18 are provided with mounting slots for securing the synchronization swing arms 131 to the middle frame fixing blocks 18. Two auxiliary swing arms 172 are rotatably connected to different middle frame fixing blocks 18 on either side via virtual pins 173. One end of each synchronization swing arm 131 is inserted into the mounting slot of a different middle frame fixing block 18 on either side.

[0089] When one of the synchronous swing arms 131 rotates relative to the hinge base 11, the transmission gear 1313 drives the transmission mechanism 132 to drive the other synchronous swing arm 131 to rotate synchronously. Since one end of the synchronous swing arm 131 is fixed in the installation slot, Each synchronous swing arm 131 rotates and can drive a middle frame fixed block 18 and a door panel 19 to rotate. Meanwhile, because two auxiliary swing arms 172 cooperate the rotation of middle frame fixed block 18, two auxiliary swing arms 172 also rotate relatively.

[0090] like Figure 19 As shown, a track groove 191 is provided on the door panel 19. The door panel 19 is mounted on the middle frame fixing block 18 via the door panel pin 174. A portion of the auxiliary swing arm 172 extends into the track groove 191 to constrain the movement of the door panel 19. The shape and size of the track groove 191 can adjust the trajectory of the door panel 19 during movement. Track groove 191 can be designed into a straight line, an arc, or other complex shapes to meet different movement requirements of the door panel 19.

[0091] In some embodiments, as Figure 1 and Figure 20 As shown, the hinge structure 1 further includes one or more connecting members 111 and one or more shielding members 112. The support plate 12 is provided with one or more connecting holes, through which the connecting portions of the one or more connecting members 111 are connected to the hinge base 11; and the shielding member 112 is provided to cover the one or more connecting holes.

[0092] Specifically, the support plate 12 is a planar structure within the hinge structure 1 that supports the flexible screen 2 or other components, while the hinge base 11 is the fixed portion of the hinge structure 1. Connectors 111 (such as bolts or screws) are components within the hinge structure 1 that connect the support plate 12 and the hinge base 11. The tightening action of connectors 111, such as bolts, ensures a stable connection between the support plate 12 and the hinge base 11.

[0093] The cover 112 can be made of foam and is used to cover the connection holes on the support plate 12, thereby concealing the bolts and other connectors 111. As a soft and elastic material, foam not only effectively covers the holes but also provides additional cushioning and protection when the flexible screen 2 comes into contact with it. In addition, the foam prevents impurities such as dust and moisture from entering the connection holes, protecting the internal components of the hinge structure 1.

[0094] As needed, the shielding member 112 (such as foam) can not only cover the connecting hole on the support plate 12, but can also be set at other hole positions on the support plate 12 and / or the hinge base 11 as needed. The shielding member 112 is customized according to the actual hole position and size to ensure that each hole can be effectively shielded, so that the flexible screen 2 can provide cushioning and protection when it contacts the support plate 12 and / or the hinge base 11.

[0095] The present application also provides a terminal device, such as Figure 21 As shown, it includes: a first device body 3, a second device body 4, a flexible screen 2 and a hinge structure 1; the first device body 3 and the second device body 4 are rotatably connected through the hinge structure 1, so that the terminal device switches between a flat state and a folded state, one end of the flexible screen 2 is connected to the first device body 3, and the other end of the flexible screen 2 is connected to the second device body 4; when the terminal device is in the folded state, the support plate 12 squeezes the flexible screen 2 toward the main body 1311 of the two synchronous swing arms 131 to cause deformation.

[0096] In this embodiment, the first device body 3 and the second device body 4 are part of the terminal device and are connected to the second device body 4 via a hinge structure 1. One end of the flexible screen 2 is connected to the first device body 3, and the other end is connected to the second device body 4. The flexible screen 2 is bendable and foldable, allowing the terminal device to switch between a flat state and a folded state.

[0097] like Figures 1 to 7As shown, the hinge structure 1 includes a hinge base 11 , a support plate 12 and a synchronization module 13 . The hinge base 11 is formed with a accommodating space; the support plate 12 is covered on the accommodating space and is provided with two first notches 121; the synchronization module 13 is partially located in the accommodating space, including two symmetrical synchronization swing arms 131 and a transmission mechanism 132, the synchronization swing arm 131 includes a main body 1311, a swinging part 1312 located in the first direction of the main body 1311 and a transmission gear 1313 located in the second direction of the main body 1311, the main body 1311 and the transmission gear 1313 are located in the accommodating space and the main body 1311 corresponds to the first notch 121, the transmission gears 1313 of the two synchronization swing arms 131 are connected by the transmission mechanism 132, and the first direction and the second direction are orthogonal; when the two synchronization swing arms 131 rotate to a flattened state, the first surfaces of the two main bodies 1311 are flush with the corresponding first notches 121; when the two synchronization swing arms 131 rotate to a folded state, the two main bodies 1311 span the corresponding first notches 121 and the two first surfaces are opposite.

[0098] When the terminal device is in a folded state, the two synchronous swing arms 131 rotate to the folded state, and the first device body 3 and the second device body 4 rotate relative to each other. The main body 1311 will span the corresponding first notch 121, and the two first surfaces will be opposite. At this time, under the action of the swing part 1312, the flexible screen 2 is squeezed and folded by the swing parts 1312 on both sides. The first surfaces of the two main bodies 1311 will support the two sides of the flexible screen 2, and the support plate 12 will support the bottom surface of the flexible screen 2 after bending. The first surface and the support plate 12 provide support for the flexible screen 2. This method not only helps to protect the flexible screen 2, but also maintains the stability of its shape in the folded state.

[0099] When the terminal device is in the unfolded state, the first device body 3 and the second device body 4 rotate to the sides, the two synchronous swing arms 131 are in a flat state, and the first surface of the main body 1311 is flush with the corresponding first notch 121, thereby filling the first notch 121. At this time, under the action of the swinging portion 1312, the flexible screen 2 is unfolded, which allows the flexible screen 2 to be placed flat on the support plate 12, avoiding problems such as gear points that may exist in conventional designs, and reducing risks in tests such as the ball drop test.

[0100] The terminal device provided in this embodiment employs a synchronization module 13 comprising two symmetrical synchronization arms 131 and a transmission mechanism 132 disposed within the hinge base 11. The synchronization arms 131 comprise a main body 1311, a swinging portion 1312 positioned in a first direction of the main body 1311, and a transmission gear 1313 positioned in a second direction of the main body 1311. This ensures that when the two synchronization arms 131 are in a flattened position, the first surface of the main body 1311 is flush with the corresponding first notch 121, thus filling the gap and allowing the flexible screen 2 to be positioned flatly on the support plate 12. This avoids issues such as gear cusps that may occur in conventional designs, reduces risks in tests such as the ball and pen drop test, and protects the integrity of the flexible screen 2. When the two synchronization arms 131 are rotated to a folded position, the main body 1311 spans the corresponding first notch 121, with the two first surfaces facing each other. This approach not only helps protect the flexible screen 2 from damage during folding but also maintains its stability in the folded state. The main body 1311 and the support plate 12 provide effective support for the flexible screen 2, reducing the risk of creases.

[0101] In some embodiments, as Figure 1 and Figure 2 As shown, the hinge structure 1 is provided with two synchronization modules 13 and two auxiliary modules 17. Each synchronization module 13 is provided with an auxiliary module 17. One set of synchronization modules 13 and auxiliary modules 17 is arranged on the left side of the central axis of the accommodating space, and the other set of synchronization modules 13 and auxiliary modules 17 is arranged on the right side of the central axis of the accommodating space. This symmetrical arrangement helps to maintain the balance and stability of the terminal device, ensuring that the device will not tilt or shift during the folding and unfolding process. During the folding or unfolding of the terminal device, the synchronization module 13 and the auxiliary module 17 work together to ensure that the first device body 3 and the second device body 4 can rotate smoothly and coordinated with each other.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A hinge structure comprising: The hinge base is formed with a receiving space; A support plate, covering the accommodation space and provided with two first notches; a synchronization module, partially located in the accommodation space, comprising two symmetrical synchronization swing arms and a transmission mechanism, wherein the synchronization swing arm comprises a main body, a swinging portion located in a first direction of the main body, and a transmission gear located in a second direction of the main body, the main body and the transmission gear being located in the accommodation space, the main body corresponding to the first notch, the transmission gears of the two synchronization swing arms being connected by transmission via the transmission mechanism, and the first direction and the second direction being orthogonal; as well as When the two synchronous swing arms rotate to a flattened state, the first surfaces of the two main bodies are flush with the corresponding first notches; When the two synchronous swing arms rotate to the folded state, the two main bodies span the corresponding first notches and the two first surfaces are opposite to each other.

2. The hinge structure according to claim 1, wherein: The synchronous swing arm further includes: a first cam located in a third direction of the main body, the third direction being opposite to the second direction and orthogonal to the first direction; The synchronization module further includes a resistance module, and the resistance module includes an elastic member, a first limiting member and a cam plate; Wherein, the elastic member is arranged between the first limiting member and the cam plate, and two second cams are formed on the cam plate to respectively abut against the first cams of the two synchronous swing arms.

3. The hinge structure according to claim 2, wherein: The third direction of the main body forms a support portion with a recess, and the synchronous swing arm further includes: a connecting block; The support portion is provided with two first plug-in grooves at the two end portions on both sides of the recess, and the support portion is provided with a second plug-in groove penetrating the support portion on the side opposite to the recess. The first cam is formed with a protrusion abutting against the two end portions and a plug-in piece cooperating with the second plug-in groove, and the protrusion has a third plug-in groove. When the plug-in piece is inserted into the second plug-in groove, the two first plug-in grooves and part of the third plug-in groove are opposite to each other, and the connecting block is arranged in the two first plug-in grooves and the third plug-in groove.

4. The hinge structure according to claim 3, wherein: The hinge structure further comprises: A first rotating shaft passes through the synchronous swing arm and the resistance module, and the synchronous swing arm and the resistance module can rotate relative to the first rotating shaft.

5. The hinge structure according to claim 4, wherein: The support portion is a raised structure having the recess on one side, the first cam is formed with a raised portion abutting against the recess, the raised portion and a side opposite to the first cam are adapted to each other, so that the raised portion on the first cam is fixed to the recess via the connecting block, and the side of the first cam opposite to the raised portion is spliced ​​onto the raised portion; The protruding structure and the first cam form a first through hole for the first rotating shaft to pass through.

6. The hinge structure according to claim 5, wherein: The protrusion structure is formed in a first arc shape, and the protrusion is formed in a second arc shape; When the first cam is spliced ​​onto the protruding structure, the first arc and the second arc form the first through hole, and the radius of the first arc is smaller than the radius of the second arc.

7. The hinge structure according to claim 4, wherein: The transmission mechanism comprises: a first synchronous gear and a second synchronous gear; The first synchronous gear includes a second rotating shaft and a first meshing portion constructed on the second rotating shaft, the second synchronous gear includes a third rotating shaft and a second meshing portion constructed on the third rotating shaft, and the transmission gears of the two synchronous swing arms are meshed and transmitted with the second meshing portion through the first meshing portion.

8. The hinge structure according to claim 7, further comprising: a second limiting member and a third limiting member; Both ends of the second rotating shaft and the third rotating shaft are rotatably disposed between the second limiting member and the third limiting member respectively; The second limiting member is provided with a second through hole, one end of the first rotating shaft of the two synchronous swing arms is rotatably disposed on the second limiting member through the second through hole, and the other end of the first rotating shaft is rotatably disposed in the cam plate; A first limiting block and a second limiting block are provided on the circumference of the second through hole for contacting the transmission gear; When the two synchronous swing arms rotate to a flattened state, the first limit block abuts against the transmission gear to limit the synchronous swing arms from further extending outward; When the two synchronous swing arms rotate to a folded state, the second limit block abuts against the transmission gear to limit the synchronous swing arms from further folding inward.

9. The hinge structure according to claim 1, wherein: The support plate is provided with two second notches; The hinge structure further comprises: an auxiliary module, partially located in the accommodation space, comprising an auxiliary base and two auxiliary swing arms, wherein the auxiliary base is provided with two arc-shaped slide grooves, one end of the two auxiliary swing arms is rotatably disposed in the corresponding arc-shaped slide grooves, and the other ends of the two auxiliary swing arms pass through the corresponding second notches; When the two auxiliary swing arms are rotated to a flattened state, the second surfaces on the two auxiliary swing arms close the corresponding second notches; when the two auxiliary swing arms are rotated to a folded state, the two auxiliary swing arms span the corresponding second notches and the two second surfaces are opposite.

10. The hinge structure according to claim 9, wherein: When the two auxiliary swing arms are further unfolded along the unfolding direction on the basis of the flattened state, the two auxiliary swing arms come into contact with the auxiliary base to limit the auxiliary swing arms.

11. The hinge structure according to claim 9, further comprising: Two middle frame fixing blocks and two door panels are respectively located on both sides of the synchronization module, and each of the middle frame fixing blocks is connected to the door panel on the same side; The two middle frame fixing blocks are both provided with mounting grooves, the two auxiliary swing arms are respectively rotatably connected to the middle frame fixing blocks on both sides, and the main bodies of the two synchronous swing arms are respectively arranged in the mounting grooves of the middle frame fixing blocks on both sides.

12. The hinge structure according to any one of claims 1 to 11, further comprising: One or more connecting members, wherein the support plate is provided with one or more connecting holes, and the connecting parts of the one or more connecting members are connected to the hinge base through the one or more connecting holes; One or more shielding members are disposed to cover the one or more connecting holes.

13. A terminal device comprising: A first device body, a second device body, a flexible screen, and a hinge structure according to any one of claims 1 to 12; The first device body and the second device body are rotatably connected via the hinge structure, so that the terminal device can switch between a flat state and a folded state, one end of the flexible screen is connected to the first device body, and the other end of the flexible screen is connected to the second device body; When the terminal device is in a folded state, the support plate squeezes the flexible screen to deform toward the main body of the two synchronous swing arms.

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