Hinge device and electronic device

Abstract

The present application provides a hinge device and an electronic device. The hinge device includes: a base; a plurality of rotating components symmetrically arranged on both sides of the base and rotatably connected to the base. Among them, the rotating component includes a synchronous swing arm, a virtual swing arm, and a connecting piece. Both the synchronous swing arm and the virtual swing arm are rotatably connected to the base. The connecting piece is slidably connected to the synchronous swing arm and rotates relative to the base along with the synchronous swing arm.

Description

Technical Field

[0001] This application belongs to the technical field of electronic devices, and particularly relates to a hinge device and an electronic device. Background Art

[0002] In the related art, for an in-foldable folding screen mobile phone, a water-drop hinge is usually adopted. The main movement principle is generally a double rocker connecting rod mechanism, that is, a four-bar system composed of a main fixed bracket, a virtual swing arm, a synchronous swing arm, and a middle frame bracket. The hinge generally has an axisymmetric mirror structure. The virtual swing arm, synchronous swing arm, and middle frame bracket on the left side of the main fixed bracket cannot be shared with those on the right side, which leads to an excessive number of components on one hinge and a high production cost of the hinge. Summary of the Invention

[0003] This application aims to provide a hinge device and an electronic device, which can solve one of the technical problems in the related art that the production cost of the hinge device is too high due to the excessive number of components of the hinge device.

[0004] To solve the above technical problems, this application is implemented as follows:

[0005] In a first aspect, this application provides a hinge device, including:

[0006] A base;

[0007] A plurality of rotating components, symmetrically arranged on both sides of the base and rotatably connected to the base;

[0008] Wherein, the rotating component includes a synchronous swing arm, a virtual swing arm, and a connecting piece. The synchronous swing arm and the virtual swing arm are both rotatably connected to the base, and the connecting piece is slidably connected to the synchronous swing arm and rotates relative to the base along with the synchronous swing arm.

[0009] In a second aspect, this application provides an electronic device, including a first housing, a second housing, and the hinge device as proposed in the first aspect;

[0010] Wherein, the first housing and the second housing are rotatably connected through the hinge device, and the first housing and the second housing are respectively fixedly connected to the connecting pieces on both sides of the base.

[0011] In the embodiments of this application, the hinge device includes a base and a plurality of rotating components, and the plurality of rotating components are rotatably arranged on both sides of the base, so as to realize the rotation function of the hinge device.

[0012] Moreover, the rotating assembly includes a synchronous swing arm, a virtual swing arm, and a connecting member. Among them, both the synchronous swing arm and the virtual swing arm are rotatably connected to the base through a rotating shaft. Thus, the virtual swing arm and the synchronous swing arm are also movably connected to the connecting member, and the connecting member and the synchronous swing arm are slidably connected. Furthermore, the synchronous swing arm, the virtual swing arm, and the connecting member form a linkage mechanism to ensure that the hinge device forms a water droplet-shaped hinge.

[0013] In addition, the rotating assemblies located on both sides of the base are symmetric structures. That is, after the rotating assembly on one side of the base rotates 180 degrees, it is the rotating assembly on the other side of the base. Furthermore, the rotating assemblies on both sides of the base can use the same components. Therefore, for the rotating assembly, there is only one type of rotating assembly in the entire hinge device, reducing the types of components of the hinge device, improving the utilization rate of components, and reducing production costs.

[0014] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Brief Description of the Drawings

[0015] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, where:

[0016] Figure 1 shows an exploded view of a hinge device provided by an embodiment of the present application;

[0017] Figure 2 shows a schematic diagram of a part of a hinge device provided by an embodiment of the present application;

[0018] Figure 3 shows an exploded view of a part of a hinge device provided by an embodiment of the present application;

[0019] Figure 4 shows an exploded view of a part of a hinge device provided by an embodiment of the present application;

[0020] Figure 5 shows a schematic diagram of a synchronous swing arm in a hinge device provided by an embodiment of the present application;

[0021] Figure 6 shows a schematic diagram of a connecting member in a hinge device provided by an embodiment of the present application;

[0022] Figure 7 shows a partial schematic diagram of a connecting member in a hinge device provided by an embodiment of the present application;

[0023] Figure 8 shows a schematic diagram of a door panel in a hinge device provided by an embodiment of the present application;

[0024] Figure 9 Shows a schematic diagram of an electronic device provided by an embodiment of the present application.

[0025] Figures 1 to 9 Reference numerals:

[0026] 100 hinge device, 110 base, 120 rotating assembly, 122 synchronous swing arm, 124 swing arm body, 126 avoidance groove, 128 third chute, 130 third sliding part, 132 virtual swing arm, 134 connecting member, 136 connecting body, 138 first sliding part, 140 first chute, 142 first connecting part, 144 second sliding part, 146 second chute, 148 door panel, 150 door panel body, 152 protruding part, 154 fourth sliding part, 156 fourth chute, 158 boss, 200 electronic device, 210 first housing, 220 second housing. Detailed implementation manners

[0027] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0028] The terms "first" and "second" in the description and claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects. The character " / " generally indicates an "or" relationship between the associated objects before and after.

[0029] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "inner", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.

[0030] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0031] The following will describe a hinge device 100 and an electronic device 200 according to embodiments of the present application in conjunction with Figures 1 to 9 FIGs.

[0032] As Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown, the present application provides a hinge device 100, including: a base 110; a plurality of rotating components 120 symmetrically arranged on both sides of the base 110 and rotatably connected to the base 110; wherein, the rotating component 120 includes a synchronous swing arm 122, a virtual swing arm 132, and a connecting member 134. Both the synchronous swing arm 122 and the virtual swing arm 132 are rotatably connected to the base 110, and the connecting member 134 is slidably connected to the synchronous swing arm 122 and rotates relative to the base 110 along with the synchronous swing arm 122.

[0033] Specifically, the hinge device 100 includes a base and a plurality of rotating components 120, and the plurality of rotating components 120 are rotatably arranged on both sides of the base 110, thereby realizing the rotation function of the hinge device 100.

[0034] Specifically, the base 110 includes a synchronous component, and the rotating components 120 located on both sides of the synchronous component can rotate synchronously under the constraint of the synchronous component.

[0035] Moreover, the rotating component 120 includes a synchronous swing arm 122, a virtual swing arm 132, and a connecting member 134. Among them, both the synchronous swing arm 122 and the virtual swing arm 132 are rotatably connected to the base 110 through a rotating shaft, so that the virtual swing arm 132 and the synchronous swing arm 122 are also movably connected to the connecting member 134. The connecting member 134 and the synchronous swing arm 122 are slidably connected. Furthermore, the synchronous swing arm 122, the virtual swing arm 132, and the connecting member 134 form a linkage mechanism to ensure that the hinge device 100 forms a water-drop-shaped hinge.

[0036] Moreover, the rotating components 120 located on both sides of the base 110 are of symmetric structure. That is, after the rotating component on one side of the base 110 rotates 180 degrees, it becomes the rotating component 120 on the other side of the base. Thus, the rotating components 120 on both sides of the base 110 can adopt the same components. For the rotating component 120, there is only one type of rotating component 120 in the entire hinge device 100, which reduces the types of components of the hinge device 100, improves the utilization rate of components, and reduces production costs.

[0037] Among them, the rotating components 120 on both sides of the base 110 are axisymmetric and centrosymmetric, ensuring uniform force on the hinge device 100. And the structures of the rotating components 120 on both sides of the base 110 are exactly the same.

[0038] Specifically, the rotating component 120 is of axisymmetric structure, and the extending direction of its axis of symmetry can be perpendicular to the extending direction of the base 110, so that the connection positions between the rotating component 120 and the base 110 are also axisymmetric. Thus, when the rotating component 120 rotates, the force on the base 110 is more uniform, the force on the entire hinge device 100 is more balanced, and it is not easy to twist. Moreover, the rotating components 120 on both sides of the base 110 are not only centrosymmetric by 180 degrees, but also the rotating component 120 itself is axisymmetric, reducing the types of components of the hinge device 100, reducing production costs, significantly improving the utilization rate of component grading, reducing the difficulty of process control during hinge production, and reducing the mold opening cost and production cost after the types of components are reduced.

[0039] In addition, the rotating components 120 on both sides of the base 110 are centrosymmetric, which can make the rotating components 120 on the left and right of the base 110 exactly the same, effectively reducing the types of Metal Injection Molding (MIM) components, while improving the utilization rate after component grading and simplifying the assembly process of the hinge device 100. Also, the force states on the left and right of the hinge device 100 are completely symmetric, reducing the unbalanced internal forces inside the hinge device 100.

[0040] As Figure 3 、 Figure 4 、 Figure 6 and Figure 7 shown, as a possible implementation, each connecting piece 134 includes: a connecting body 136; two first sliding parts 138, on which there are first sliding grooves 140, and the synchronous swing arm 122 is slidably engaged with the first sliding grooves 140; a first connecting part 142, which is arranged on the connecting body 136 and located between the two first sliding parts 138. The two first sliding parts 138 are symmetrically arranged with respect to the first connecting part 142, and the first connecting part 142 is rotatably connected to the virtual swing arm 132.

[0041] Specifically, the connecting member 134 includes a connecting body 136, a first sliding portion 138, and a first connecting portion 142. Among them, the first sliding portion 138 and the first connecting portion 142 are both provided on the sliding body. A first sliding groove 140 is formed in the first sliding portion 138, and the synchronous swing arm 122 is slidably inserted into the first sliding groove 140. Moreover, the first sliding portion 138 can limit the detachment of the synchronous swing arm 122, ensuring the reliability of the sliding between the synchronous swing arm 122 and the connecting member 134.

[0042] Among them, the cross-section of the first sliding portion 138 forms a "T" - shaped structure. Both sides of the first sliding portion 138 are respectively provided with a first sliding groove 140. After the synchronous swing arm 122 is inserted into the first sliding groove 140, the top of the first sliding portion 138 can hold the synchronous swing arm 122, reducing the possibility of the synchronous swing arm 122 detaching from the first sliding portion 138.

[0043] The first connecting portion 142 and the first sliding portion 138 are arranged on the same side of the connecting body 136. The first connecting portion 142 and the virtual swing arm 132 are rotatably connected through a rotating shaft. There are multiple first sliding portions 138. The cooperation between the multiple first sliding portions 138 and the synchronous swing arm 122 can make the sliding between the connecting member 134 and the synchronous swing arm 122 smoother, reducing the occurrence of problems such as local warping. The number of the first connecting portions 142 can be two, three, four, etc.

[0044] As Figure 6 and Figure 7 shown, as a possible implementation manner, each connecting member 134 further includes: a boss 158, which is arranged on the connecting body 136 and protrudes from the connecting body 136 into the interior of the first sliding groove 140.

[0045] Specifically, a boss 158 is also arranged on the connecting body 136. The boss 158 protrudes from the connecting body 136 into the interior of the first sliding groove 140. The boss 158 can hold up the synchronous swing arm 122. Then, when the synchronous swing arm 122 slides in the first sliding groove 140, the synchronous swing arm 122 only rubs against the boss 158, rather than against the connecting body 136, reducing the friction area between the synchronous swing arm 122 and the connecting member 134, reducing the frictional force, and reducing the probability of jamming during the rotation of the hinge device 100.

[0046] Among them, the top of the boss 158 can be planar or curved, etc.

[0047] And there is a boss 158 on both sides of the first sliding portion 138.

[0048] As Figure 1 、 Figure 2 、 Figure 4 and Figure 8As shown, as a possible implementation, the hinge device 100 further includes: a door panel 148, which is slidably connected to the connecting member 134 and also slidably connected to the synchronous swing arm 122.

[0049] Specifically, the hinge device 100 includes a door panel 148. The door panel 148 is slidably connected to the connecting member 134 and is also slidably connected to the synchronous swing arm 122. The synchronous swing arm 122, the virtual swing arm 132, the connecting member 134, and the door panel 148 form a four-bar linkage mechanism to ensure that the hinge assembly 100 forms a water-drop-shaped hinge.

[0050] As Figure 3 、 Figure 4 and Figure 9 shown, as a possible implementation, the door panel 148 includes: a door panel main body 150; a plurality of protrusions 152 provided on the door panel main body 150. The protrusions 152 have a fourth sliding portion 154 and a fourth sliding groove 156. The fourth sliding portion 154 is slidably connected to the connecting member 134, and the synchronous swing arm 122 is slidably connected to the fourth sliding groove 156.

[0051] Specifically, the door panel 148 includes a door panel main body 150 and a plurality of protrusions 152. The plurality of protrusions 152 are provided on the same side of the door panel main body 150. The protrusions 152 have a fourth sliding portion 154 and a fourth sliding groove 156. The fourth sliding portion 154 is in sliding fit with the second sliding groove 146 on the connecting member 134, and the fourth sliding groove 156 is in sliding fit with the third sliding portion 130 on the synchronous swing arm 122. That is, the fourth sliding portion 154 and the fourth sliding groove 156 are integrated on one protrusion 152, so that the fourth sliding portion 154 and the fourth sliding groove 156 form an integral structure, which is easy to further reduce the number of components of the hinge device 100, easy to manufacture, and for the driving and rotation of the door panel 148 to be in the same plane, avoiding local torsional deformation of the door panel 148.

[0052] Among them, the number of the protrusions 152 is two. The synchronous swing arm 122, the virtual swing arm 132, and the connecting member 134 are located between the two protrusions 152. Thus, the design space of the protrusions 152 is relatively open, the design space of the protrusions 152 is large, and they can be made into a completely integral type, reducing fitting problems and further reducing the types of components of the hinge device 100.

[0053] A third sliding portion 130 is provided on each side of the swing arm main body 124. The third sliding portion 130 and the fourth sliding portion 154 are in the same plane in the direction from one third sliding portion 130 to the other third sliding portion 130, facilitating the integral design of the protrusions 152.

[0054] Specifically, there are two protruding portions 152 on the door panel main body 150. Fourth sliding grooves 156 are respectively formed on two opposite surfaces of the two protruding portions 152, and fourth sliding portions 154 are provided.

[0055] As a possible implementation manner, the protruding portion 152 and the door panel main body 150 are connected by injection molding; or the protruding portion 152 and the door panel main body 150 are connected by welding.

[0056] Specifically, the protruding portion 152 and the door panel main body 150 are connected by welding or insert injection molding, thereby reducing the types of components on the door panel 148. Among them, for the door panel 148 formed by injection molding, the axisymmetry of the door panel 148 does not need to be considered, and the effects of reducing production costs and process difficulty can also be achieved.

[0057] As Figure 4 shown, as a possible implementation manner, the connecting member 134 further includes: a plurality of second sliding portions 144, which are arranged on the connecting body 136 and are located on both sides of the plurality of first sliding portions 138. Second sliding grooves 146 are provided on the second sliding portions 144, and the second sliding grooves 146 are arc-shaped. The door panel 148 and the second sliding grooves 146 are slidably matched.

[0058] The second sliding portions 144 are arranged on both sides of the connecting body 136, so as to be slidably connected to the door panel 148. The plurality of first sliding portions 138 are arranged on both sides of the connecting body 136 and cooperate with the door panel 148, which can make the sliding between the connecting member 134 and the synchronous swing arm 122 smoother and ensure the reliability of the sliding between the synchronous swing arm 122 and the connecting member 134. The number of the second sliding portions 144 can be two, three, four, etc.

[0059] Moreover, second sliding grooves 146 are provided on the second sliding portions 144. The second sliding grooves 146 are arc-shaped. The door panel 148 and the second sliding grooves 146 are slidably connected, that is, the door panel 148 can perform an arc-shaped movement in the second sliding grooves 146, thereby increasing the movement range of the door panel 148, making it more convenient for the synchronous swing arm 122, the virtual swing arm 132, the connecting member 134 and the door panel 148 to perform the movement of a four-bar linkage. At the same time, the hinge device 100 can form a better water droplet shape.

[0060] As Figure 3 、 Figure 4 and Figure 5As shown, as a possible implementation, the synchronous swing arm 122 includes: a swing arm main body 124, on which there are a plurality of third sliding grooves 128, and the third sliding grooves 128 cooperate with the first connecting portion 142; an avoidance groove 126 provided on the swing arm main body 124, and the opening directions of the first sliding groove 140 and the avoidance groove 126 are respectively located on the opposite sides of the swing arm main body 124, and a part of the virtual swing arm 132 is located in the avoidance groove 126; a plurality of third sliding portions 130 provided on both sides of the swing arm main body 124, and the third sliding portions 130 are slidably connected to the door panel 148.

[0061] Specifically, the synchronous swing arm 122 includes a swing arm main body 124, an avoidance groove 126 and third sliding portions 130. Among them, the avoidance groove 126 is opened on one side of the swing arm main body 124, and the third sliding portions 130 are provided on both sides of the swing arm main body 124 and are slidably connected to the door panel 148.

[0062] The swing arm main body 124 has a third sliding groove 128. The swing arm main body 124 is inserted into the first sliding groove 140 of the connecting member 134, and the first connecting portion 142 of the connecting member 134 is inserted into the third sliding groove 128. Thus, the swing arm main body 124 and the first connecting portion 142 form an interlocking structure, improving the reliability between the synchronous swing arm 122 and the connecting member 134.

[0063] A part of the virtual swing arm 132 is located in the avoidance groove 126, and the virtual swing arm 132 and the connecting member 134 sandwich the synchronous swing arm 122 in the middle. Among them, the avoidance groove 126 can be set at the middle position of the synchronous swing arm 122, and thus the virtual swing arm 132 is also located at the middle position of the synchronous swing arm 122. Therefore, after the virtual swing arm 132 and the avoidance groove 126 rotate 180 degrees, their structures remain unchanged. Further, the connection positions of the rotating assemblies 120 on both sides of the base 110 and the base 110 are the same, ensuring the synchronous effect of the synchronous mechanism, making the force on the hinge device 100 more uniform, and reducing the possibility of the hinge device 100 twisting.

[0064] A plurality of third sliding portions 130 are provided on both sides of the swing arm main body 124 and cooperate with the door panel 148, making the sliding between the door panel 148 and the synchronous swing arm 122 smoother and ensuring the reliability of the sliding between the synchronous swing arm 122 and the door panel 148.

[0065] Among them, on the premise of ensuring the structural strength, the virtual swing arm 132 minimizes its width as much as possible to avoid occupying too much space in the extending direction of the base 110. The middle area of the avoidance groove 126 on the swing arm main body 124 avoids the virtual swing arm 132, and the avoidance groove 126 can avoid the virtual swing arm 132 throughout the folding movement space.

[0066] The opening direction of the avoidance groove 126 is opposite to the opening direction of the third sliding groove 128.

[0067] The virtual swing arm 132 is embedded inside the avoidance groove 126 of the synchronous swing arm 122, and two first sliding portions 138 are provided on the connecting member 134 to achieve the effects of complete axial symmetry and complete central symmetry.

[0068] Wherein, the synchronous swing arm 122 can be an integral structure or a split structure. The split synchronous swing arms 122 are located on both sides of the virtual swing arm 132, and the avoidance groove 126 is located in the middle of the split synchronous swing arms 122, thereby effectively reducing the processing difficulty of the synchronous swing arm 122. Or the synchronous swing arm 122 is an integral structure, and the avoidance groove 126 is provided on one side of the synchronous swing arm 122.

[0069] Moreover, the third sliding portion 130 and the swing arm main body 124 can be an integral structure or a split structure.

[0070] Furthermore, the center lines of the connecting member 134, the virtual swing arm 132, and the synchronous swing arm 122 may not coincide. Correspondingly, a set of additional first connecting portions 142 and first sliding portions 138 need to be provided on the synchronous swing arm 122. The connecting member 134, the virtual swing arm 132, and the synchronous swing arm 122 on both sides of the base 110 are matched with different first connecting portions 142 and first sliding portions 138, so as to achieve the effect of forming different rotating assemblies 120 on the left and right sides by using the same components.

[0071] As Figure 1 shown, as a possible implementation manner, a plurality of rotating assemblies 120 are provided on the same side of the base 110, and the door panels 148 on the plurality of rotating assemblies 120 are of an integral structure.

[0072] Specifically, a plurality of rotating assemblies 120 are provided on the same side of the base 110, and the door panels 148 on the plurality of rotating assemblies 120 located on the same side of the base 110 are of an integral structure, thereby further reducing the components of the hinge device 100, reducing the production cost of the hinge device 100, and enabling the rotation processes of the plurality of rotating assemblies 120 to be more synchronous, improving the synchronization effect of the hinge device 100.

[0073] As Figure 9 shown, the present application provides an electronic device 200, including: a first housing 210, a second housing 220, and the hinge device 100 provided in the embodiment of the first aspect; wherein, the first housing 210 and the second housing 220 are rotatably connected through the hinge device 100, and the first housing 210 and the second housing 220 are respectively fixedly connected to the connecting members 134 on both sides of the base 110.

[0074] Specifically, the electronic device 200 provided in this application includes the hinge device 100 proposed in the first aspect. Therefore, it has all the beneficial effects of the hinge device 100 proposed in the first aspect, and will not be elaborated one by one here.

[0075] Among them, the electronic device 200 includes a first housing 210 and a second housing 220. The first housing 210 is connected to the rotating assembly 120 on one side of the base 110 of the hinge device 100, and the first housing 210 is connected to the connecting member 134. The second housing 220 is connected to the rotating assembly 120 on the other side of the base 110 of the hinge device 100, and the second housing 220 is connected to the connecting member 134.

[0076] The electronic device 200 includes a mobile phone, a tablet computer, a wearable device, a laptop computer, a monitor, and a television.

[0077] In the description of this specification, the description referring to terms such as "one embodiment" or "specific embodiment" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this 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 a suitable manner in any one or more embodiments or examples.

[0078] Although the embodiments of this application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of this application. The scope of this application is defined by the claims and their equivalents.

Claims

1. A hinge device, characterized in that, Comprising: A base; A plurality of rotating components, which are symmetrically arranged on both sides of the base and are rotatably connected to the base; Wherein, each rotating component includes a synchronous swing arm, a virtual swing arm and a connecting piece. Both the synchronous swing arm and the virtual swing arm are rotatably connected to the base. The connecting piece is slidably connected to the synchronous swing arm and rotates relative to the base along with the synchronous swing arm; Each said connecting piece includes: A connecting body; Two first sliding parts, on which there are first sliding grooves, and the synchronous swing arm and the first sliding grooves are slidably matched; A first connecting part, arranged on the connecting body, between the two first sliding parts. The two first sliding parts are symmetrically arranged relative to the first connecting part, and the first connecting part and the virtual swing arm are rotatably connected.

2. The hinge device according to claim 1, characterized in that, Each said connecting piece further includes: A boss, arranged on the connecting body, protruding from the connecting body towards the inside of the first sliding groove.

3. The hinge device according to claim 1, wherein, Further comprising: A door panel, which is slidably connected to the connecting piece and also slidably connected to the synchronous swing arm.

4. The hinge device according to claim 3, characterized in that, The door panel includes: A door panel body: A plurality of protruding parts, arranged on the door panel body. On the protruding parts, there are fourth sliding parts and fourth sliding grooves. The fourth sliding parts are slidably connected to the connecting piece, and the synchronous swing arm is slidably connected to the fourth sliding grooves.

5. The hinge device according to claim 4, characterized in that The protruding part and the door panel body are connected by injection molding; or The protruding part and the door panel body are connected by welding.

6. The hinge device according to claim 4, characterized in that, The connecting piece further includes: A plurality of second sliding parts, arranged on the connecting body, on both sides of the plurality of first sliding parts. On the second sliding parts, there are second sliding grooves, and the second sliding grooves are arc-shaped. The door panel and the second sliding grooves are slidably matched.

7. The hinge device according to claim 4, characterized in that, The synchronous swing arm includes: A swing arm body, on which there are a plurality of third sliding grooves, and the third sliding grooves are matched with the first connecting part; An avoidance groove, arranged on the swing arm body. The opening directions of the first sliding groove and the avoidance groove are respectively on the opposite sides of the swing arm body, and a part of the virtual swing arm is located in the avoidance groove; A plurality of third sliding parts, arranged on both sides of the swing arm body, and the third sliding parts are slidably connected to the door panel.

8. The hinge device according to any one of claims 3 to 5, characterized in that On the same side of the base, there are a plurality of said rotating components, and the door panels on the plurality of rotating components are of an integral structure.

9. An electronic device, characterized in that, Comprising a first shell, a second shell and the hinge device according to any one of claims 1 to 8; Wherein, the first shell and the second shell are rotatably connected through the hinge device, and the first shell and the second shell are respectively fixedly connected to the connecting pieces on both sides of the base.

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