Hinge assembly and electronic device

Abstract

The application discloses a hinge assembly and an electronic device, and belongs to the technical field of electronic products. The hinge assembly comprises a base, a swing arm assembly and a frame connecting piece. The first end of the swing arm assembly is rotationally connected with the base through a rotating shaft. The frame connecting piece is provided with a sliding groove extending along a first direction. The second end of the swing arm assembly is located in the sliding groove and is in sliding cooperation with the sliding groove. The frame connecting piece is further provided with a limiting assembly. The limiting assembly comprises an extension piece and a movable piece. The extension piece can be extended and retracted along a second direction. The movable piece can move along the first direction. The first direction intersects with the second direction. When the hinge assembly is impacted, the movable piece abuts against the extension piece, so that the extension piece is in an extended state, and at least part of the extension piece is located in the sliding groove, so as to limit the sliding of the swing arm assembly along the sliding groove. When the hinge assembly is not impacted, the movable piece is separated from the extension piece. The extension piece is switched between the extended state and the retracted state along with the opening and closing of the hinge assembly.

Description

Technical Field

[0001] This application belongs to the field of electronic product technology, specifically relating to a hinge assembly and an electronic device. Background Technology

[0002] With the continuous development of foldable electronic devices, people have increasingly higher requirements for the drop reliability and functionality of electronic devices. The hinge assembly of foldable electronic devices typically includes a frame connector, a swing arm assembly, and a base. One end of the swing arm assembly slides with the frame connector, while the other end rotates with the base, enabling the electronic device to fold. During the opening and closing of the electronic device, the swing arm assembly slides with the frame connector to adapt to changes in the device's state.

[0003] However, when electronic devices are dropped, the hinge assembly is prone to impact with the ground. This can cause the swing arm assembly to deform along the sliding contact between the swing arm assembly and the frame connector, leading to downward deformation of the frame connector and pressure on the display screen. This can easily cause the display screen to malfunction. Therefore, the electronic devices involved in this technology suffer from the problem of display screen failure after a drop. Summary of the Invention

[0004] The purpose of this application is to provide a hinge assembly and an electronic device that can solve the problem that the display screen of the electronic device is prone to failure after the electronic device is dropped.

[0005] This application provides a hinge assembly, including a base, a swing arm assembly, and a frame connector. The first end of the swing arm assembly is rotatably connected to the base via a pivot. The frame connector is provided with a sliding groove extending in a first direction. The second end of the swing arm assembly is located in the sliding groove and slides in cooperation with the sliding groove. The frame connector is further provided with a limiting component, which includes a telescopic component and a movable component. The telescopic component can extend and retract along a second direction, and the movable component can move along a first direction. The first direction intersects with the second direction. When the hinge assembly is impacted, the movable member abuts against the telescopic member to put the telescopic member in an extended state, and at least a portion of the telescopic member is located within the groove to restrict the sliding of the swing arm assembly along the groove; When the hinge assembly is not impacted, the movable member separates from the telescopic member, and the telescopic member switches between the extended state and the retracted state as the hinge assembly opens and closes.

[0006] This application provides an electronic device, including a first frame, a second frame, a display screen, and the hinge assembly described above. The first frame and the second frame are respectively connected to the frame connectors on both sides of the base, and the display screen is disposed on one side of the first frame and the second frame.

[0007] In this embodiment, since the second end of the swing arm assembly slides into the groove on the frame connector, the movable part can separate from the telescopic part when the hinge assembly is not impacted. The telescopic part can switch between the extended and retracted states as the hinge assembly opens and closes, thus allowing the hinge assembly to smoothly switch between the folded and unfolded states. When the electronic device is dropped, i.e. when the hinge assembly is impacted, the base and the swing arm assembly will deform after the shock wave arrives. This causes the swing arm assembly and the frame connector to slide relative to each other. At this time, the movable part moves under the action of inertial force and abuts against the telescopic part, so that the telescopic part is in the extended state. At least part of the telescopic part is located in the groove to limit the sliding of the swing arm assembly along the groove. That is, the movement of the swing arm assembly can be limited by the movable part and the telescopic part to avoid relative sliding between the swing arm assembly and the frame connector, thereby avoiding squeezing the display screen of the electronic device and preventing the display screen from failing, thus improving the drop reliability of the electronic device. Attached Figure Description

[0008] Figure 1 and Figure 2 These are schematic diagrams of the hinge assembly from different perspectives disclosed in the embodiments of this application. Figure 3 and Figure 4 These are enlarged schematic diagrams of the hinge assembly from different perspectives as disclosed in the embodiments of this application; Figure 5 This is an exploded view of the hinge assembly disclosed in the embodiments of this application; Figure 6 for Figure 5 A magnified view of the area; Figure 7 This is a schematic diagram of the structure of the swing arm, telescopic component, and movable component disclosed in the embodiments of this application; Figure 8 This is a schematic diagram of the moving part, telescopic part, and movable part of the hinge assembly disclosed in the embodiments of this application when it is in the unfolded state; Figure 9 This is a schematic diagram of the structure of the movable limiting telescopic component disclosed in the embodiments of this application; Figure 10 This is a cross-sectional structural diagram of the moving part, telescopic part, and movable part of the hinge assembly disclosed in the embodiments of this application when it is in a folded state; Figure 11 This is an exploded view of the electronic device disclosed in the embodiments of this application.

[0009] Explanation of reference numerals in the attached figures: 100 - Frame connector, 111 - Slide groove, 112 - First mounting groove, 113 - Second mounting groove, 114 - Mounting protrusion, 120 - Groove; 200-Swing arm assembly, 210-Moving part, 211-First inclined surface, 220-Swing arm body; 300 - base, 310 - pivot; 400 - Telescopic component, 410 - Second inclined plane; 500 - Activity items; 610 - First elastic element, 620 - Second elastic element; 710 - First frame, 720 - Second frame; 800 - Display Screen; 900-Virtual Swing Arm. Detailed Implementation

[0010] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0011] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0012] The hinge assembly disclosed in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0013] Please refer to Figures 1-11 This application discloses a hinge assembly, which includes a base 300, a swing arm assembly 200, and a frame connector 100.

[0014] The hinge assembly disclosed in this application enables the electronic device described below to have opening and closing functions, namely, folding and unfolding functions, to meet user needs. The base 300, the swing arm assembly 200, and the frame connector 100 are all basic components of the hinge assembly. The first end of the swing arm assembly 200 is rotatably connected to the base 300 via a pivot 310. Optionally, please refer to... Figure 1 , Figure 2 and Figure 5 The rotating shaft 310 can be disposed on the base 300, and the first end of the swing arm assembly 200 can be sleeved on the rotating shaft 310 so that the first end of the swing arm assembly 200 is rotatably connected to the base 300. Alternatively, the rotating shaft 310 can be disposed on the first end of the swing arm assembly 200, and the base 300 can be provided with a mating groove. The end of the rotating shaft 310 can be rotatably connected to the side wall of the mating groove so that the first end of the swing arm assembly 200 is rotatably connected to the base 300.

[0015] The frame connector 100 may be provided with a sliding groove 111 extending along a first direction. The second end of the swing arm assembly 200 may be located within the sliding groove 111 and slidably engaged with it, that is, the swing arm assembly 200 and the frame connector 100 are slidably engaged along the first direction. During the opening and closing of the electronic device, the slidable engagement between the swing arm assembly 200 and the frame connector 100 can adapt to changes in the state of the electronic device.

[0016] In this embodiment, the frame connector 100 may also be provided with a limiting component, which may include a telescopic member 400 and a movable member 500. The telescopic member 400 can extend and retract in a second direction, that is, the telescopic member 400 can move in a second direction, and during the extension and retraction process, the telescopic member 400 can extend or enter the slide groove 111. For example, when at least a portion of the telescopic member 400 is located within the slide groove 111, this means that the telescopic member 400 is in an extended state (see reference). Figures 1 to 4 , Figure 9 and Figure 10 (Regarding the state of the telescopic component 400), when the telescopic component 400 extends out of the slide groove 111, this means that the telescopic component 400 is in the retracted state (please refer to...). Figure 8 (The state of the telescopic component 400).

[0017] The movable member 500 can move along a first direction, which intersects with a second direction, such that the direction of movement of the telescopic member 400 intersects with the direction of movement of the movable member 500. Optionally, the first direction and the second direction can be perpendicular to each other.

[0018] In this embodiment, when the electronic device is dropped, i.e. when the hinge assembly is impacted, the base 300 and the swing arm assembly 200 will deform after the shock wave arrives. This causes the swing arm assembly 200 to slide relative to the frame connector 100. At this time, the movable member 500 moves along the first direction under the action of inertial force and abuts against the telescopic member 400, so that the telescopic member 400 is in the extended state, i.e., at least part of the telescopic member 400 is located in the slide groove 111, so as to restrict the sliding of the swing arm assembly 200 along the slide groove 111. That is, the movement of the swing arm assembly 200 can be restricted by the movable member 500 and the telescopic member 400 to avoid relative sliding between the swing arm assembly 200 and the frame connector 100, thereby avoiding the squeezing of the display screen 800 of the electronic device, and thus preventing the display screen 800 from failing, thereby improving the drop reliability of the electronic device, i.e., improving the protection effect against instantaneous drops of the electronic device.

[0019] In this embodiment, when the hinge assembly is not impacted, the movable member 500 can be separated from the telescopic member 400, so that the movable member 500 does not significantly affect the extension and retraction of the telescopic member 400. The telescopic member 400 can switch between an extended state and a retracted state as the hinge assembly opens and closes. That is, during the opening and closing of the hinge assembly, the second end of the swing arm assembly 200 can slide relative to the slide groove 111, and the movable member 500 does not significantly restrict the movement of the telescopic member 400. This allows the telescopic member 400 to not significantly restrict the overall movement of the swing arm assembly 200, thereby enabling the hinge assembly to smoothly switch between a folded state and an unfolded state, and consequently, enabling the electronic device to smoothly switch between a folded state and an unfolded state.

[0020] Alternatively, please refer to Figure 5 and Figure 6 The frame connector 100 may also be provided with a first mounting groove 112 and a second mounting groove 113. The sliding groove 111, the first mounting groove 112 and the second mounting groove 113 may be connected in sequence. The second mounting groove 113 may extend along a first direction. The telescopic member 400 may slide with the first mounting groove 112, that is, the first mounting groove 112 may extend along a second direction. The movable member 500 may slide with the second mounting groove 113.

[0021] When the hinge assembly has not been impacted, please refer to Figure 3 , Figure 4 and Figure 8 The movable part 500 is located within the second mounting groove 113 to avoid the telescopic part 400, so that the telescopic part 400 can switch between an extended state and a retracted state as the hinge assembly opens and closes, that is, it can switch between an extended state and a retracted state as the second end of the swing arm assembly 200 slides relative to the slide groove 111; when the hinge assembly is impacted, please refer to... Figure 9The movable member 500 slides relative to the second mounting groove 113 along the first direction under the action of inertial force, so that at least a part of the movable member 500 is located in the first mounting groove 112, and cooperates with the telescopic member 400 at the upper limit in the second direction, so as to limit the movement of the swing arm assembly 200 by limiting the extension and retraction of the telescopic member 400.

[0022] In this embodiment, since the telescopic member 400 slides in the first mounting groove 112 and the movable member 500 slides in the second mounting groove 113, the first mounting groove 112 can restrict the sliding direction of the telescopic member 400, allowing the telescopic member 400 to extend and retract relatively stably along the second direction. The second mounting groove 113 can restrict the sliding direction of the movable member 500, allowing the movable member 500 to move relatively stably along the first direction. Of course, in other embodiments, the frame connector 100 may not have the first mounting groove 112 and the second mounting groove 113.

[0023] Alternatively, please refer to Figures 1 to 10 The second mounting groove 113 may be provided with a first elastic member 610 extending along the first direction, that is, the deformation direction of the first elastic member 610 is parallel to the first direction. One end of the first elastic member 610 may be connected to the frame connecting member 100, specifically to the side wall of the second mounting groove 113, and the other end of the first elastic member 610 may be connected to the movable member 500.

[0024] In this embodiment, when the hinge assembly is not impacted, the first elastic member 610 is in its initial state. When the hinge assembly is impacted, the movable member 500 moves along the first direction under the action of inertial force, and the first elastic member 610 deforms accordingly. After the hinge assembly is no longer impacted, that is, after the tendency of relative sliding between the swing arm assembly 200 and the frame connector 100 disappears, the first elastic member 610 begins to recover its deformation, so as to drive the movable member 500 to separate from the telescopic member 400, thereby resetting the movable member 500.

[0025] Therefore, the first elastic element 610 can automatically reset the movable element 500 to ensure that the hinge assembly can be opened and closed normally in the future. Moreover, this method of resetting the movable element 500 is relatively simple and has a relatively low cost.

[0026] Of course, in other embodiments, the second mounting groove 113 may not be provided with the first elastic member 610 extending in the first direction. For example, a first driving component with a driving function, such as a hydraulic cylinder, may be provided. When the hinge assembly is not impacted, the first driving component may be in a non-working state, so that the movable member 500 is located in the second mounting groove 113. When the hinge assembly is impacted, the electronic device can detect the impact, and the first driving component is triggered to drive the movable member 500 to move. Alternatively, when the movable member 500 moves in the first direction under the action of inertial force, the first driving component actively follows the movable member 500 to extend and retract, so that the movable member 500 can limit the extension and retraction of the telescopic member 400. After the impact on the hinge assembly disappears, the first driving component drives the movable member 500 to reset.

[0027] Optionally, the first elastic element 610 can be a spring; however, this embodiment does not impose specific limitations on this.

[0028] Optionally, the number of first elastic members 610 can be at least two, and each first elastic member 610 can be spaced apart within the second mounting groove 113, and both are used to connect the frame connector 100 and the movable member 500. Each first elastic member 610 can stabilize the movable member 500 while improving the efficiency of automatically resetting the movable member 500. Of course, in other embodiments, the number of first elastic members 610 can also be one.

[0029] Alternatively, please refer to Figures 1 to 7 , Figure 9 and Figure 10 A second elastic member 620 extending along the second direction can be provided in the first mounting groove 112, that is, the deformation direction of the second elastic member 620 is parallel to the second direction. One end of the second elastic member 620 can be connected to the frame connecting member 100, specifically to the side wall of the first mounting groove 112, and the other end of the second elastic member 620 can be connected to the telescopic member 400.

[0030] In this embodiment, during the opening and closing of the hinge assembly, that is, when the hinge assembly is not impacted, since the movable member 500 and the telescopic member 400 can be separated, that is, the movable member 500 can avoid the telescopic member 400, the telescopic member 400 can switch between the extended state and the retracted state as the hinge assembly opens and closes. Furthermore, during the extension and retraction of the telescopic member 400, that is, during the sliding of the telescopic member 400 relative to the first mounting groove 112, the second elastic member 620 can switch between the initial state and the deformed state.

[0031] For example, please refer to Figures 1 to 4The hinge assembly is in the folded state, and at least a portion of the telescopic member 400 is located within the slide groove 111, i.e., the telescopic member 400 is in the extended state. At this time, the second elastic member 620 can be in the initial state. During the transition of the hinge assembly from the folded state to the extended state, please refer to... Figure 7 When the second end of the swing arm assembly 200 slides relative to the slide groove 111, the telescopic member 400 is in a retracted state, and at this time, the second elastic member 620 is in a deformed state. During the process of the hinge assembly switching from the unfolded state to the folded state, the second end of the swing arm assembly 200 avoids the telescopic member 400. At this time, the second elastic member 620 can reset the telescopic member 400 so that the telescopic member 400 is in an extended state.

[0032] Therefore, in this embodiment, the second elastic element 620 can automatically reset the telescopic element 400 to ensure that the hinge assembly can be opened and closed normally in the future. This method of resetting the telescopic element 400 is relatively simple and low in cost. Of course, in other embodiments, the first mounting groove 112 can also be equipped with a second driving component with a driving function, such as a hydraulic cylinder. Normally, this second driving component can be in a free telescopic state so that the telescopic element 400 can switch from an extended state to a retracted state. When the telescopic element 400 needs to switch from a retracted state to an extended state, the second driving component is in working condition, thereby driving the telescopic element 400 to reset, that is, driving the telescopic element 400 to switch from a retracted state to an extended state.

[0033] Optionally, a mounting protrusion 114 may be provided on the side wall of the first mounting groove 112, one end of the second elastic member 620 may be connected to the mounting protrusion 114, and the other end of the second elastic member 620 may be connected to the telescopic member 400. That is, the second elastic member 620 is located between the mounting protrusion 114 and the telescopic member 400. This arrangement can ensure that the second elastic member 620 extends along the second direction and facilitates the installation of the second elastic member 620.

[0034] In this embodiment, optionally, the number of second elastic members 620 can be an even number, and multiple second elastic members 620 can be symmetrically arranged on opposite sides of the mounting protrusion 114. At this time, the number of telescopic members 400 can also be an even number, and multiple telescopic members 400 can be symmetrically arranged on opposite sides of the mounting protrusion 114. The telescopic members 400 arranged on opposite sides of the mounting protrusion 114 can all be automatically reset.

[0035] In this embodiment, in the first direction, i.e., the direction of movement of the movable member 500, the mounting protrusion 114 can be disposed opposite to the movable member 500. When the hinge assembly is impacted, the movable member 500 moves along the first direction under the action of inertial force and abuts against the telescopic member 400. Simultaneously, it can abut against the mounting protrusion 114. That is, the mounting protrusion 114 can limit the sliding stroke of the movable member 500 along the first direction to prevent the movable member 500 from disengaging from the second mounting groove 113. Of course, in other embodiments, the mounting protrusion 114 may not be provided on the side wall of the first mounting groove 112.

[0036] Alternatively, please refer to Figures 1 to 10 The second end of the swing arm assembly 200 may have a first inclined surface 211, which may be inclined relative to a first direction. One end of the telescopic member 400 may have a second inclined surface 410, which may be inclined relative to a second direction. The second inclined surface 410 is in contact with the first inclined surface 211, and the first inclined surface 211 and the second inclined surface 410 are in sliding engagement. The swing arm assembly 200 can push the telescopic member 400 to move through the first inclined surface 211 and the second inclined surface 410.

[0037] In this embodiment, during the opening and closing of the hinge assembly, the second end of the swing arm assembly 200 slides relative to the slide groove 111, thereby pushing the telescopic member 400 to move in the second direction through the first inclined surface 211 and the second inclined surface 410, so that the telescopic member 400 switches from the extended state to the retracted state, thereby avoiding the second end of the swing arm assembly 200, so as to ensure that the hinge assembly can open and close normally.

[0038] Because the second inclined surface 410 is in contact with the first inclined surface 211, the contact area between the second end of the swing arm assembly 200 and the telescopic member 400 is relatively large, thereby stably driving the telescopic member 400 to move in the second direction. Of course, in other embodiments, the second end of the swing arm assembly 200 may not have the first inclined surface 211, and one end of the telescopic member 400 may not have the second inclined surface 410.

[0039] Optionally, the first inclined surface 211 can be a plane inclined relative to the first direction, and the second inclined surface 410 can be a plane inclined relative to the second direction, to further increase the contact area between the second end of the swing arm assembly 200 and the telescopic member 400, and to facilitate the machining of the first inclined surface 211 on the second end of the swing arm assembly 200 and the second inclined surface 410 on the telescopic member 400. Of course, both the first inclined surface 211 and the second inclined surface 410 can also be curved surfaces.

[0040] Optionally, when a second elastic member 620 extending in the second direction is provided in the first mounting groove 112, during the unfolding of the hinge assembly, the second end of the swing arm assembly 200 pushes the telescopic member 400 to move, so that the telescopic member 400 is in a retracted state, and the second elastic member 620 can be in a deformed state. During the deformation of the second elastic member 620, the second elastic member 620 can generate a certain deformation resistance, so as to have a certain damping feel when opening and closing the hinge assembly, that is, to achieve a tighter feel when opening and closing electronic devices. Furthermore, during the folding of the hinge assembly, the second end of the swing arm assembly 200 slides relative to the slide groove 111 to avoid the telescopic member 400. At this time, the telescopic member 400 is in an extended state under the action of the second elastic member 620, so that the second inclined surface 410 fits against the first inclined surface 211, so that the hinge assembly can be opened and closed normally afterwards.

[0041] Alternatively, please refer to Figures 1 to 10 The swing arm assembly 200 may include a swing arm body 220 and a moving part 210. The moving part 210 is located in and slidably engages with the slide groove 111. The moving part 210 can push the telescopic member 400 to move in the second direction. The frame connector 100 may have a groove 120 on the side near the base 300. The side wall of the groove 120 may have a slide groove 111. One end of the swing arm body 220 is located in the groove 120. One end of the moving part 210 is detachably connected to the swing arm body 220. The other end of the moving part 210 extends into the slide groove 111. The other end of the swing arm body 220 is rotatably connected to the base 300 through a pivot 310.

[0042] In this embodiment, since one end of the swing arm body 220 is located within the groove 120, meaning that both opposite sides of the swing arm body 220 are in contact with and slidably engaged with the frame connector 100, the contact area between the swing arm assembly 200 and the frame connector 100 is relatively large, resulting in a more stable sliding engagement. This arrangement also ensures a more stable connection between the swing arm assembly 200 and the frame connector 100. Of course, in other embodiments, the frame connector 100 may not have the groove 120.

[0043] Optionally, to facilitate the assembly of the swing arm assembly 200 and the frame connector 100, the swing arm body 220 and the moving part 210 are detachably connected. During the assembly of the swing arm assembly 200 and the frame connector 100, one end of the swing arm body 220 can first be located in the groove 120, and then one end of the moving part 210 can pass through the slide groove 111 and connect with the swing arm body 220, so as to realize the stable installation of the swing arm assembly 200 on the frame connector 100.

[0044] Optionally, the number of movable parts 210 and telescopic members 400 are both at least two, with each movable part 210 and each telescopic member 400 corresponding one-to-one. Each movable part 210 can be located on opposite sides of the movable member 500, and each telescopic member 400 can be located on opposite sides of the movable member 500, so that the swing arm assembly 200 can slide and engage with the frame connector 100 through multiple movable parts 210, thereby further ensuring the stability of the sliding engagement between the two and thus more stably adapting to the state changes of the electronic device.

[0045] Furthermore, in this embodiment, when the hinge assembly is impacted, the multiple telescopic members 400 can stably restrict the sliding of the swing arm assembly 200 along the slide groove 111, thereby further preventing relative sliding between the swing arm assembly 200 and the frame connector 100. Of course, in other embodiments, the number of moving parts 210 and the number of telescopic members 400 can both be one.

[0046] Optionally, each movable part 210 can be symmetrically arranged on both sides of the movable part 500, and each telescopic part 400 can be symmetrically arranged relative to the movable part 500, so that the swing arm assembly 200 is subjected to more balanced forces when the swing arm assembly 200 and the frame connecting part 100 slide relative to each other.

[0047] Optionally, the same movable member 500 can be synchronously limited and engaged with each telescopic member 400 on both sides, so that when the hinge assembly is impacted, the same movable member 500 synchronously restricts each telescopic member 400, thereby synchronously restricting the movement of each moving part 210, and further restricting the sliding of the swing arm assembly 200 along the slide groove 111. That is, the movement of the swing arm assembly 200 can be restricted by the same movable member 500 and each telescopic member 400 to avoid relative sliding between the swing arm assembly 200 and the frame connecting member 100. This structure is relatively simple, and the limiting of each telescopic member 400 is relatively synchronous and timely. Of course, in other embodiments, different movable members 500 can also be used to restrict different telescopic members 400.

[0048] Optionally, the number of frame connectors 100 can be at least two, including a first connector and a second connector, and the number of swing arm assemblies 200 can be at least two, including a first swing arm and a second swing arm. The second end of the first swing arm can be slidably engaged with the slide groove 111 of the first connector, and the second end of the second swing arm can be slidably engaged with the slide groove 111 of the second connector. The first end of the first swing arm and the first end of the second swing arm can both be rotatably connected to the base 300. When the hinge assembly is in the unfolded state, the first swing arm and the second swing arm can be located on opposite sides of the base 300.

[0049] In this embodiment, both the first connector and the second connector may be provided with limiting components, so that when the hinge assembly is impacted, the first swing arm can be restricted from sliding along the slide groove 111 by the limiting component on the first connector, and the second swing arm can be restricted from sliding along the slide groove 111 by the limiting component on the second connector, so as to avoid squeezing the display screen 800.

[0050] Alternatively, please refer to Figure 1 , Figure 2 and Figure 5 The hinge assembly may also include a virtual swing arm 900. In the extension direction of the hinge assembly, the virtual swing arm 900 and the swing arm assembly 200 may be spaced apart. One end of the virtual swing arm 900 may be rotatably connected to the frame connector 100, and the other end of the virtual swing arm 900 may be rotatably connected to the base 300, so that the hinge assembly can switch between the folded state and the unfolded state relatively stably.

[0051] Alternatively, please refer to Figure 11 This application also discloses an electronic device, including a first frame 710, a second frame 720, a display screen 800, and the hinge assembly described above. The first frame 710 and the second frame 720 are respectively connected to the frame connectors 100 on both sides of the base 300. For example, the first frame 710 can be connected to the first connector, and the second frame 720 can be connected to the second connector. The display screen 800 can be disposed on one side of the first frame 710 and the second frame 720 so that the first frame 710 and the second frame 720 can protect the display screen 800.

[0052] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A hinge assembly, characterized in that, The device includes a base, a swing arm assembly, and a frame connector. The first end of the swing arm assembly is rotatably connected to the base via a pivot. The frame connector is provided with a sliding groove extending in a first direction. The second end of the swing arm assembly is located in the sliding groove and slides in cooperation with the sliding groove. The frame connector is further provided with a limiting component, which includes a telescopic component and a movable component. The telescopic component can extend and retract along a second direction, and the movable component can move along a first direction. The first direction intersects with the second direction. When the hinge assembly is impacted, the movable member abuts against the telescopic member to put the telescopic member in an extended state, and at least a portion of the telescopic member is located within the groove to restrict the sliding of the swing arm assembly along the groove; When the hinge assembly is not impacted, the movable member separates from the telescopic member, and the telescopic member switches between the extended state and the retracted state as the hinge assembly opens and closes.

2. The hinge assembly according to claim 1, characterized in that, The frame connector is further provided with a first mounting groove and a second mounting groove. The sliding groove, the first mounting groove and the second mounting groove are connected in sequence. The second mounting groove extends along the first direction. The telescopic member slides with the first mounting groove, and the movable member slides with the second mounting groove. When the hinge assembly is not impacted, the movable member is located in the second mounting groove to avoid the telescopic member; When the hinge assembly is impacted, at least a portion of the movable member is located within the first mounting groove and engages with the telescopic member in the second direction.

3. The hinge assembly according to claim 2, characterized in that, The second mounting groove is provided with a first elastic member extending along the first direction. One end of the first elastic member is connected to the frame connector, and the other end of the first elastic member is connected to the movable member.

4. The hinge assembly according to claim 2, characterized in that, A second elastic member extending along the second direction is provided in the first mounting groove. One end of the second elastic member is connected to the frame connector, and the other end of the second elastic member is connected to the telescopic member.

5. The hinge assembly according to claim 4, characterized in that, The first mounting groove has a mounting protrusion on its side wall. The number of the second elastic elements is even. Multiple second elastic elements are symmetrically arranged on both sides of the mounting protrusion. One end of the second elastic element is connected to the mounting protrusion, and the other end of the second elastic element is connected to the telescopic element. In the first direction, the mounting protrusion is disposed opposite to the movable member.

6. The hinge assembly according to claim 1, characterized in that, The second end of the swing arm assembly has a first inclined surface, which is inclined relative to the first direction. One end of the telescopic member has a second inclined surface, which is in contact with the first inclined surface. The first inclined surface and the second inclined surface are slidably engaged. The swing arm assembly can push the telescopic member to move through the first inclined surface and the second inclined surface.

7. The hinge assembly according to claim 1, characterized in that, The swing arm assembly includes a swing arm body and a moving part. The moving part is located in the slide groove and slides with the slide groove. The frame connector has a groove on the side near the base. The slide groove is provided on the side wall of the groove. One end of the swing arm body is located in the groove. One end of the moving part is detachably connected to the swing arm body. The other end of the moving part extends into the slide groove. The other end of the swing arm body is rotatably connected to the base through the pivot.

8. The hinge assembly according to claim 7, characterized in that, The number of the movable parts and the number of the telescopic members are both at least two, each movable part and each telescopic member corresponds one-to-one, and each movable part is located on opposite sides of the movable member, and each telescopic member is located on opposite sides of the movable member.

9. The hinge assembly according to claim 8, characterized in that, Each of the moving parts is symmetrically arranged with respect to the movable member, and each of the telescopic members is symmetrically arranged with respect to the movable member; And / or, the same movable component can be synchronously limited and engaged with the telescopic components on both sides.

10. An electronic device, characterized in that, Includes a first frame, a second frame, a display screen, and a hinge assembly as described in any one of claims 1-9. The first frame and the second frame are respectively connected to the frame connectors on both sides of the base, and the display screen is disposed on one side of the first frame and the second frame.

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