electronic devices

Abstract

This application discloses an electronic device, belonging to the field of electronic devices. The electronic device includes a base, a first support, a first connecting arm, and a pressing member. The first support supports the screen of the electronic device. A first end of the first connecting arm is rotatably mounted on the first support, and a second end of the first connecting arm is provided with a first arc-shaped engagement structure. The first arc-shaped engagement structure and the base are rotatably engaged to allow the electronic device to switch between a folded state and an unfolded state. The pressing member is disposed between the first support and the first connecting arm. When the electronic device is in the folded state, the pressing member abuts against the first arc-shaped engagement structure and the first support. When the electronic device is in the unfolded state, one of the first support and the first arc-shaped engagement structure separates from the pressing member.

Description

Technical Field

[0001] This application belongs to the field of electronic equipment technology, and specifically relates to an electronic device. Background Technology

[0002] With technological advancements, user demand for foldable electronic devices that combine large display areas with strong portability is gradually increasing. Typically, foldable electronic devices incorporate a hinge mechanism, connecting the supports that hold the screen together. To ensure relative rotation between the two supports, there needs to be an assembly gap between the components providing the rotational force within the hinge mechanism. However, this assembly gap can easily lead to axial wobble between the two supports, especially when the device is folded, which can significantly negatively impact its lifespan. Summary of the Invention

[0003] This application provides an electronic device to solve the problem of axial rubbing when the electronic device is in a folded state, which can improve the service life of the electronic device.

[0004] This application provides an electronic device including a base, a first support, a first connecting arm, and a pressing member. The first support supports the screen of the electronic device. A first end of the first connecting arm is rotatably mounted on the first support, and a second end of the first connecting arm is provided with a first arc-shaped engagement structure. The first arc-shaped engagement structure and the base are rotatably engaged to allow the electronic device to switch between a folded state and an unfolded state. The pressing member is disposed between the first support and the first connecting arm. When the electronic device is in the folded state, the pressing member abuts against the first arc-shaped engagement structure and the first support. When the electronic device is in the unfolded state, one of the first support and the first arc-shaped engagement structure separates from the pressing member.

[0005] This application discloses an electronic device in which a first support is used to support the screen of the electronic device, and a first end of a first connecting arm is rotatably mounted on the first support. The second end of the first connecting arm is provided with a first arc-shaped fitting structure, which is rotatably fitted with the base, so that the first connecting arm can form a rotatable fitting relationship with the base, and the first arc-shaped fitting structure can be used to restrict the movement trajectory of the first connecting arm.

[0006] As described above, the first support is rotatably connected to the base via the first connecting arm, allowing the electronic device to switch between a folded and unfolded state. A pressing member is provided between the first support and the first connecting arm. When the electronic device is in the folded state, the pressing member abuts against the first arc-shaped mating structure and the first support, thereby pressing the first arc-shaped mating structure and the base together in a direction perpendicular to the rotational axis of the first connecting arm. This generates static friction between the first arc-shaped mating structure and the base, preventing relative movement between them along the rotational axis of the first connecting arm when no external force is applied. In other words, when the electronic device is in the folded state, relative rubbing between the first support and the base along the rotational axis of the first connecting arm is prevented, thus improving the lifespan of the electronic device and the user experience.

[0007] Furthermore, when the electronic device is in the unfolded state, one of the first support and the first arc-shaped mating structure can be separated from the extruder, thereby enabling the first arc-shaped mating structure and the base to form a clearance fit in the direction perpendicular to the rotation axis of the first connecting arm, reducing the difficulty of relative rotation between the two and improving the smoothness of relative rotation between the first support and the base. Attached Figure Description

[0008] Figure 1 This is a cross-sectional schematic diagram of a portion of the structure of the electronic device disclosed in the embodiments of this application;

[0009] Figure 2 This is a schematic diagram of the assembly of the extrusion member and the first connecting arm in an electronic device disclosed in an embodiment of this application;

[0010] Figure 3 This is a schematic diagram of the assembly of the extrusion member and the first support in an electronic device disclosed in an embodiment of this application;

[0011] Figure 4 This is a schematic diagram of one mounting method of the extrusion component in the electronic device disclosed in the embodiments of this application;

[0012] Figure 5 This is a schematic diagram of the electronic device disclosed in the embodiments of this application in a folded state;

[0013] Figure 6 This is a schematic diagram of the electronic device disclosed in the embodiments of this application in an unfolded state;

[0014] Figure 7 This is another structural schematic diagram of the electronic device disclosed in the embodiments of this application.

[0015] The attached diagram is described as follows:

[0016] 100 - Base, 110 - Second arc-shaped mating structure, 111 - Arc-shaped protrusion, 120 - Fourth arc-shaped mating structure, 210 - First support, 211 - Cavity opening, 220 - Second support, 230 - Limiting plate

[0017] 310 - First connecting arm, 311 - First arc-shaped mating structure, 311a - Arc-shaped groove, 320 - Second connecting arm, 321 - Third arc-shaped mating structure.

[0018] 400 - Extrusion part, 410 - Body, 420 - First protrusion, 430 - Second protrusion. Detailed Implementation

[0019] 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.

[0020] 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.

[0021] like Figures 1-7 As shown in the figure, this application provides an electronic device, which can be a foldable electronic device, including a base 100, a first support 210, a first connecting arm 310 and a pressing member 400. Of course, the electronic device may also include devices such as a screen, a camera and a battery. For the sake of brevity, they will not be described in detail here.

[0022] In electronic devices, the base 100 serves as the mounting base for other components. The base 100 can be made of rigid materials such as metal or plastic, and its shape and structure can be determined according to actual conditions. The first support 210 is used to support the screen of the electronic device. The first support 210 can be a plate-like structure to provide mounting for the screen.

[0023] The first connecting arm 310 is a component that connects the base 100 and the first support 210. Optionally, the first end of the first connecting arm 310 can be rotatably mounted on the first support 210 by means of a structural component such as a rotating shaft, so that the first connecting arm 310 and the first support 210 form a rotational engagement relationship. At the same time, the second end of the first connecting arm 310 is provided with a first arc-shaped engagement structure 311, and the first connecting arm 310 is rotatably engaged with the base 100 through its first arc-shaped engagement structure 311, so that the electronic device can switch between a folded state and an unfolded state.

[0024] The shape of the first arc-shaped mating structure 311 can be determined according to actual needs. By utilizing the parameter design of the first arc-shaped mating structure 311, the movement trajectory of the first connecting arm 310 can be restricted. Thus, during the rotation of the first connecting arm 310 relative to the base 100, the distance between the first end of the first connecting arm 310 and the first support 210 can change. This allows the distance between the second end of the first connecting arm 310 and the first support 210 to change during the switching between the folded and unfolded states of the electronic device, thereby altering the mating state between the extruder 400 and both (e.g., ...). Figure 6 and Figure 7 (As shown).

[0025] The extrusion component 400 can be made of a material with a certain elasticity, such as rubber, to prevent it from cracking and being damaged during the extrusion process. In an optional embodiment of this application, the extrusion component 400 is a self-lubricating structural component. That is, the extrusion component 400 can be a structural component made of a self-lubricating material, or it can be an elastic structural component with a surface coated with a self-lubricating material. A self-lubricating material refers to a material that uses solid powder, film, or certain integral materials to reduce friction and wear between two bearing surfaces. By providing a self-lubricating material on the surface of the extrusion component, or by directly using a self-lubricating material to prepare the extrusion component 400, the smoothness of the fit between the extrusion component 400 and the first connecting arm 310 can be improved, and the service life of the extrusion component 400 can be extended. Optionally, the extrusion component 400 can be formed of polyoxymethylene resin or a material containing, for example, POM or modified polytetrafluoroethylene.

[0026] During the assembly of the electronic device, the extruder 400 is positioned between the first support 210 and the first connecting arm 310. Thus, during the transition from the unfolded state to the folded state of the electronic device, when the first connecting arm 310 and the first support 210 move relative to each other until the gap between them decreases to a preset value, the extruder 400 simultaneously contacts both the first support 210 and the first connecting arm 310. The extruder 400 provides a pressing action, causing the first connecting arm 310 to press against the base 100, preventing relative movement between the first connecting arm 310 and the base 100 along the rotational axis of the first connecting arm 310. Simultaneously, the presence of the extruder 400 increases the rotational damping between the first connecting arm 310 and the first support 210, thereby achieving a small-angle hovering effect.

[0027] Accordingly, during the process of switching the electronic device from the folded state to the unfolded state, when the first connecting arm 310 and the first support 210 move relative to each other until the gap between them increases to a preset value, the pressing member 400 separates from one of the first support 210 and the first connecting arm 310 to prevent the pressing member 400 from continuously providing a pressing effect, thereby ensuring that the first connecting arm 310 and the base 100 rotate relatively smoothly in the subsequent relative rotation process.

[0028] In a specific state of the electronic device, when the electronic device is in a folded state, the pressing member 400 abuts against the first arc-shaped mating structure 311 and the first support 210, thereby pressing the first arc-shaped mating structure 311 with the pressing member 400, causing the first arc-shaped mating structure 311 to press the base 100 in a direction perpendicular to the rotation axis of the first connecting arm 310, and causing the two to come into contact with each other in the aforementioned direction, generating static friction. This prevents the first connecting arm 310 and the base 100 from moving relative to each other in the rotation axis of the first connecting arm 310 when the electronic device is not subjected to external force.

[0029] When the electronic device is in the unfolded state, one of the first support 210 and the first arc-shaped mating structure 311 is separated from the extruder 400, thereby ensuring that when the electronic device is switched to the unfolded state, the first arc-shaped mating structure 311 and the base 100 are in a clearance fit relationship in the direction perpendicular to the rotation axis of the first connecting arm 310, ensuring that the two have good relative movement capability.

[0030] It should be noted that by designing parameters such as the size or shape of the extrusion member 400, during the process of switching the electronic device from the unfolded state to the folded state, after the first support 210 in the electronic device rotates relative to the base 100 by a preset angle such as 80°, the extrusion member 400 can abut against the first arc-shaped mating structure 311 and the first support 210. As the electronic device continues to be folded, the extrusion member 400 is continuously compressed, thereby gradually reducing the gap between the first arc-shaped mating structure 311 and the base 100 until the electronic device is in or about to be in the folded state, ensuring that the first arc-shaped mating structure 311 is in contact with the base 100 and forms a static friction relationship.

[0031] Correspondingly, during the transition of the electronic device from a folded state to an unfolded state, as the first support 210 gradually rotates relative to the base 100, the squeezing action of the pressing member 400 on the first arc-shaped mating structure 311 gradually weakens. This continues until the first support 210 rotates relative to the base 100 by a preset angle, such as 10°, at which point the pressing member 400 no longer provides squeezing action to the first arc-shaped mating structure 311. At this point, the first arc-shaped mating structure 311 and the base 100 return to a clearance fit, ensuring relatively smooth rotation in subsequent processes until the electronic device switches to the unfolded state. Of course, the actual value of the aforementioned preset angle can be flexibly designed according to actual conditions, and this paper does not impose any limitations on it.

[0032] This application discloses an electronic device in which a first support 210 is used to support the screen of the electronic device, and a first end of a first connecting arm 310 is rotatably mounted on the first support 210. The second end of the first connecting arm 310 is provided with a first arc-shaped engagement structure 311, which is rotatably engaged with the base 100, so that the first connecting arm 310 can form a rotatable engagement relationship with the base 100, and the first arc-shaped engagement structure 311 can be used to restrict the movement trajectory of the first connecting arm 310.

[0033] As described above, the first support 210 is rotatably connected to the base 100 via the first connecting arm 310, allowing the electronic device to switch between a folded state and an unfolded state. A pressing member 400 is provided between the first support 210 and the first connecting arm 310. When the electronic device is in the folded state, the pressing member 400 abuts against the first arc-shaped mating structure 311 and the first support 210, thereby pressing the first arc-shaped mating structure 311 and the base 100 together in a direction perpendicular to the rotational axis of the first connecting arm 310. This generates static friction between the first arc-shaped mating structure 311 and the base 100, preventing relative movement along the rotational axis of the first connecting arm 310 when no external force is applied. In other words, when the electronic device is in the folded state, relative rubbing between the first support 210 and the base 100 along the rotational axis of the first connecting arm 310 is prevented, thus extending the lifespan of the electronic device.

[0034] Furthermore, when the electronic device is in the unfolded state, one of the first support 210 and the first arc-shaped mating structure 311 can be separated from the extruder 400, thereby forming a clearance fit between the first arc-shaped mating structure 311 and the base 100 in a direction perpendicular to the rotation axis of the first connecting arm 310, reducing the difficulty of relative rotation between the two and improving the smoothness of relative rotation between the first support 210 and the base 100.

[0035] As described above, the second end of the first connecting arm 310 is provided with a first arc-shaped fitting structure 311, and the first arc-shaped fitting structure 311 is rotatably fitted with the base 100. Optionally, the base 100 is provided with a second arc-shaped fitting structure 110. By adapting the shapes of the first arc-shaped fitting structure 311 and the second arc-shaped fitting structure 110, a stable rotational fitting relationship can be ensured between them. At the same time, by designing the parameters of the first arc-shaped fitting structure 311, the rotation trajectory of the first connecting arm 310 can also be restricted.

[0036] Optionally, the first arc-shaped fitting structure 311 and the second arc-shaped fitting structure 110 can be shaft-hole type fitting structures. For example, the first arc-shaped fitting structure 311 can be an arc-shaped columnar shaft structure, and the second arc-shaped fitting structure 110 can be an arc-shaped deep hole structure. In this case, the first arc-shaped fitting structure 311 can extend into the second arc-shaped fitting structure 110 and move in the second arc-shaped fitting structure 110 along the rotation direction of the first connecting arm 310, so as to achieve the purpose of rotational fitting of the first arc-shaped fitting structure 311 and the second arc-shaped fitting structure 110.

[0037] In another embodiment of this application, one of the first arc-shaped mating structure 311 and the second arc-shaped mating structure 110 is provided with an arc-shaped groove 311a, and the other includes an arc-shaped protrusion 111. During the switching process between the folded state and the unfolded state of the electronic device, the arc-shaped protrusion 111 and the arc-shaped groove 311a slide in engagement. Optionally, the insertion and engagement direction of the arc-shaped protrusion 111 and the arc-shaped groove 311a is the rotation axis of the first connecting arm 310. This makes the engagement stability between the arc-shaped protrusion 111 and the arc-shaped groove 311a relatively high at all times. Moreover, when the extruder 400 extrudes the first arc-shaped mating structure 311, the first arc-shaped mating structure 311 and the second arc-shaped mating structure 110 can form a surface contact relationship through their arc-shaped surfaces, increasing the static friction effect between the first arc-shaped mating structure 311 and the second arc-shaped mating structure 110, thereby improving the reliability of the relative fixed relationship between the first connecting arm 310 and the base 100 in the electronic device when it is in the folded state.

[0038] As described above, the extruder 400 can be extruded between the first support 210 and the first connecting arm 310, and the extruder 400 can also be separated from one of the first support 210 and the first connecting arm 310. Based on this, the extruder 400 can be installed on the first support 210, or the extruder 400 can also be installed on the first connecting arm 310.

[0039] In an optional embodiment of this application, the extruder 400 is disposed on the first support 210, and when the electronic device is in a folded state, the first arc-shaped mating structure 311 can press against the extruder 400. Correspondingly, the extruder 400 can also press against the first arc-shaped mating structure 311, thereby causing the first arc-shaped mating structure 311 and the base 100 to press against each other in a direction perpendicular to the rotation axis of the first connecting arm 310 (e.g., Figure 5 The force F shown prevents the first connecting arm 310 and the base 100 from moving relative to each other along the rotation axis of the first connecting arm 310. Simultaneously, when the electronic device is in the unfolded state, the first arc-shaped mating structure 311 separates from the pressing member 400, ensuring that the pressing member 400 no longer provides a pressing effect, and creating a clearance fit between the first arc-shaped mating structure 311 and the base 100, ensuring a smoother rotation process between them.

[0040] Optionally, the extrusion member 400 can be fixed to the first support 210 by means of bonding or other methods. By designing the installation position of the extrusion member 400, it can be ensured that the first connecting arm 310 can gradually approach the first support 210 during the process of switching the electronic device to the folded state, and that when the electronic device is in or about to be in the folded state, the extrusion member 400 can abut against the first arc-shaped mating structure 311 of the first connecting arm 310.

[0041] In another embodiment of this application, the extruder 400 can also be installed on the first support 210 by embedding. Specifically, a groove is provided on the first support 210 at a position opposite to the first arc-shaped mating structure 311. By placing the extruder 400 in the groove, with a portion of the extruder 400 located outside the groove, the extruder 400 can be installed on the first support 210, ensuring that the portion of the extruder 400 outside the groove can press against the first arc-shaped mating structure 311. Furthermore, by designing the shape, size, and other parameters of the groove, the extruder 400 can be installed in the groove through an interference fit, forming a relatively stable mating relationship with the first support 210. For example, the extruder 400 can be a circular cylindrical structure, and the groove can be a circular countersunk hole. By making the diameter of the groove slightly smaller than the diameter of the extruder 400, it can be ensured that the extruder 400 can be stably fixed in the groove.

[0042] In another embodiment of this application, the extruder 400 can be made to form an interference fit with the groove only in the direction that is perpendicular to both the rotation axis of the first connecting arm 310 and the depth direction of the groove. This can also ensure that the extruder 400 can be stably installed in the groove and make the installation of the extruder 400 relatively easier.

[0043] To further enhance the stability of the relative fixed relationship between the extruder 400 and the first support 210, the groove optionally includes a mounting cavity and a limiting cavity. The mounting cavity has an opening 211, and the mounting cavity is recessed from the opening 211, meaning the shape of the mounting cavity is the same as the shape of the opening 211. Simultaneously, limiting cavities are provided on opposite sides of the mounting cavity, each limiting cavity communicating with the mounting cavity. The limiting cavities are used to mutually limit the extruder 400 in the axial direction of the opening 211 of the mounting cavity, i.e., in the depth direction of the mounting cavity. In simpler terms, the groove is a structure whose inner contour covers the opening 211, and its limiting cavity is the space below the surface of the first support 210 where the groove is not exposed by the opening 211 of the mounting cavity.

[0044] Based on the above-described structure of the groove, the extruder 400 includes a body 410 and a first protrusion 420. The first protrusion 420 is connected to both opposite sides of the body 410. In the rotational axis of the first connecting arm 310, the size of the extruder 400 is smaller than the size of the cavity opening 211 of the mounting cavity. Thus, after the extruder 400 is installed into the mounting cavity from the cavity opening 211, the extruder 400 can still move in the mounting cavity along the rotational axis of the first connecting arm 310. Based on this, after the extruder 400 is installed into the mounting cavity from the cavity opening 211, by moving the extruder 400 along the rotation axis of the first connecting arm 310, the first protruding edge 420 connected to one side of the body 410 can extend into the limiting cavity. Thus, under the limiting action of the first protruding edge 420 and the limiting cavity along the depth direction of the mounting cavity, the extruder 400 cannot be dislodged from the groove from the cavity opening 211 of the mounting cavity, thereby further improving the reliability of the relative fixed relationship between the extruder 400 and the first support 210.

[0045] Furthermore, when adopting the above technical solution, such as Figure 4 As shown, after the extrusion component 400 is installed into the mounting cavity through the cavity opening 211, since the main body 410 has first protruding edges 420 connected to both opposite sides, and the mounting cavity has limiting cavities on both opposite sides, the first protruding edges 420 can form a limiting fit with the limiting cavities regardless of whether the extrusion component 400 moves to either the left or right along the rotation axis of the first connecting arm 310. This reduces the installation difficulty of the extrusion component 400. Of course, in the design of the first protruding edge 420 and the limiting cavity, by designing their shape and size, it can be ensured that the first protruding edge 420 can extend into the limiting cavity and mutually limit the limiting cavity in the depth direction of the groove.

[0046] Optionally, the body 410 and the first protrusion 420 in the extrusion 400 can be integrally formed to improve the connection reliability between the two. This, in turn, after the first protrusion 420 engages with the limiting cavity, makes the limiting relationship between the extrusion 400 and the first support 210 more stable. The shape of the first protrusion 420 can be determined according to actual needs and is not limited herein.

[0047] Of course, when the extrusion part 400 includes the aforementioned body 410 and first protruding edge 420, in addition to the aforementioned interference fit, a second protruding edge 430 can also be provided to improve the stability of the relative fixed relationship between the extrusion part 400 and the groove. As described above, the body 410 has first protruding edges 420 on both opposite sides, and the two first protruding edges 420 are distributed along the rotational axis of the first connecting arm 310. Based on this, as... Figure 4As shown, in a direction that is perpendicular to both the rotation axis of the first connecting arm 310 and the depth direction of the groove, the body 410 can be provided with second protrusions 430 on both opposite sides, and corresponding limiting spaces can be provided at corresponding positions on the body 410. The second protrusions 430 and the aforementioned limiting spaces can mutually limit each other in the depth direction of the groove, thereby ensuring that the extruded part 400 and the groove form a stable relative fixed relationship.

[0048] Alternatively, a limiting plate 230 can be provided at the opening 211 of the mounting cavity. The limiting plate 230 extends toward the center of the opening 211 of the mounting cavity. After the extruder 400 is installed into the mounting cavity from the opening 211 of the mounting cavity, by moving the extruder 400 along the rotation axis of the first connecting arm 310, and with the first protrusion 420 extending into the limiting cavity, the second protrusion 430 can also be moved to the position of the limiting plate 230, so that the second protrusion 430 is stuck at the limiting plate 230 in the depth direction of the groove.

[0049] Of course, in the above embodiments, the groove can be a structure with a groove bottom, that is, the groove is a structure similar to a blind hole, thereby ensuring that the extruder 400 will not detach from the groove from the side away from the cavity opening 211 of the mounting cavity. Alternatively, a limiting structure can be provided at the bottom of the groove to prevent the extruder 400 from detaching from the side of the groove away from the cavity opening 211 of the mounting cavity.

[0050] In the electronic devices disclosed in the above embodiments, in order to improve the stability of the fit between the extrusion member 400 and the first connecting arm 310, parameters such as the size and installation position of the extrusion member 400 are designed, such as... Figure 2 As shown, in the rotational axis of the first connecting arm 310, both opposite ends of the extrusion member 400 can extend beyond the first arc-shaped mating structure 311, thereby ensuring that the entire first arc-shaped mating structure 311 can be extruded by the extrusion member 400, and improving the fit between the extrusion mating of the first arc-shaped mating structure 311 and the base 100.

[0051] As described above, the extrusion member 400 can be disposed on the first support 210. In another embodiment of this application, the extrusion member 400 is disposed on the first arc-shaped mating structure 311. Optionally, the extrusion member 400 and the first arc-shaped mating structure 311 can be fixedly connected by means of bonding or insert injection molding. In this embodiment, when the electronic device is in a folded state, the first support 210 extrudes the extrusion member 400. Correspondingly, when the electronic device is in an unfolded state, the first support 210 separates from the extrusion member 400. Similarly, by designing the shape and other parameters of the first arc-shaped mating structure 311, the movement trajectory of the first connecting arm 310 can be controlled. Thus, during the switching process between the folded and unfolded states of the electronic device, the distance between the first arc-shaped mating structure 311 and the first support 210 can change accordingly, and the first support 210 can extrude the extrusion member 400, as well as separate the first support 210 from the extrusion member 400.

[0052] As described above, the electronic device includes a base 100, a first support 210, and a first connecting arm 310, with the first support 210 connected to the base 100 via the first connecting arm 310. Correspondingly, the electronic device may also include a second support 220 and a second connecting arm 320, with the second support 220 also supporting the screen of the electronic device. Furthermore, through a connecting component such as a pivot, the first end of the second connecting arm 320 is rotatably mounted on the second support 220, enabling the second support 220 to form a connection with the second connecting arm 320. The second end of the second connecting arm 320 is provided with a third arc-shaped engagement structure 321, which rotatably engages with the base 100, thereby forming a rotatable engagement relationship between the second support 220 and the base 100.

[0053] Optionally, the base 100 may be provided with a fourth arc-shaped mating structure 120, and the base 100 may be connected to the third arc-shaped mating structure 321 through the fourth arc-shaped mating structure 120, thereby connecting the second support 220 and the base 100; and by designing the shape and other parameters of the third arc-shaped mating structure 321, the movement trajectory of the second connecting arm 320 can be restricted, so that during the process of switching between the unfolded state and the folded state of the electronic device, the gap between the second connecting arm 320 and the second support 220 is correspondingly reduced or increased, thereby changing the mating state of the extruder 400 disposed between the second support 220 and the second connecting arm 320.

[0054] In detail, when the electronic device is in a folded state, the pressing member 400 located between the second support 220 and the second connecting arm 320 abuts against the third arc-shaped mating structure 321 and the second support 220, thereby causing the third arc-shaped mating structure 321 and the fourth arc-shaped mating structure 120 of the base 100 to press against each other in a direction perpendicular to the rotation axis of the second connecting arm 320, thereby generating static friction between the two and preventing the second connecting arm 320 and the base 100 from moving relative to each other along the rotation axis of the second connecting arm 320.

[0055] Correspondingly, when the electronic device is in the unfolded state, one of the second support 220 and the third arc-shaped mating structure 321 separates from the extruder 400, so that the second support 220 and the base 100 in the unfolded electronic device form a clearance fit relationship, ensuring relatively good smoothness of relative movement between the two.

[0056] Of course, similar to the first support 210 and the first connecting arm 310, by designing the dimensions and other parameters of the extrusion member 400, it is also possible that after the electronic device has rotated through a preset angle during the process of switching from the unfolded state to the folded state, even if the second support 220 and the second connecting arm 320 are in contact with the extrusion member 400, and as the electronic device continues to rotate towards the folded state, the second support 220 and the second connecting arm 320 can continuously extrude the extrusion member 400, thereby continuously reducing the gap between the second connecting arm 320 and the base 100 until the electronic device switches to or is about to switch to the folded state, so that the third arc-shaped mating structure 321 of the second connecting arm 320 forms an extrusion contact relationship with the base 100, preventing the second connecting arm 320 and the base 100 from having relative movement along the rotation axis of the second connecting arm 320. Correspondingly, during the process of switching the electronic device from the folded state to the unfolded state, as the second support 220 rotates relative to the base 100, the squeezing effect of the extruder 400 on the second support 220 and the second connecting arm 320 gradually weakens. After the second support 220 rotates relative to the base 100 through a preset angle, one of the second support 220 and the second connecting arm 320 can be separated from the extruder 400, ensuring that the second connecting arm 320 has relatively good smoothness in the subsequent rotation process.

[0057] 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. An electronic device, characterized in that, The device includes a base, a first support, a first connecting arm, and a pressing member. The first support is used to support the screen of the electronic device. The first end of the first connecting arm is rotatably mounted on the first support. The second end of the first connecting arm is provided with a first arc-shaped fitting structure. The first arc-shaped fitting structure and the base are rotatably fitted to allow the electronic device to switch between a folded state and an unfolded state. The pressing member is disposed between the first support and the first connecting arm. When the electronic device is in a folded state, the pressing member abuts between the first arc-shaped mating structure and the first support; When the electronic device is in the unfolded state, one of the first support and the first arc-shaped mating structure separates from the extruder.

2. The electronic device according to claim 1, characterized in that, The base is provided with a second arc-shaped fitting structure. One of the first arc-shaped fitting structure and the second arc-shaped fitting structure is provided with an arc-shaped groove, and the other includes an arc-shaped protrusion. During the process of the electronic device switching between the folded state and the unfolded state, the arc-shaped protrusion slides and engages with the arc-shaped groove.

3. The electronic device according to claim 1, characterized in that, The extrusion member is disposed on the first support. When the electronic device is in the folded state, the first arc-shaped mating structure extrudes the extrusion member; when the electronic device is in the unfolded state, the first arc-shaped mating structure separates from the extrusion member.

4. The electronic device according to claim 3, characterized in that, Along the rotational axis of the first connecting arm, both ends of the extrusion member extend beyond the first arc-shaped mating structure.

5. The electronic device according to claim 3, characterized in that, The first support is provided with a groove at the position opposite to the first arc-shaped mating structure, the extrusion member is disposed in the groove, and the part of the extrusion member is located outside the groove.

6. The electronic device according to claim 5, characterized in that, The extrusion member is in an interference fit with the groove in a direction perpendicular to both the rotational axis of the first connecting arm and the depth direction of the groove.

7. The electronic device according to claim 5, characterized in that, The groove includes a mounting cavity and a limiting cavity. The mounting cavity has an opening and is recessed from the opening. The limiting cavities are provided on opposite sides of the mounting cavity, and each limiting cavity is in communication with the mounting cavity. The extrusion member includes a body and a first protrusion. The first protrusion is connected to both opposite sides of the body. The size of the extrusion member is smaller than the size of the cavity opening along the rotation axis of the first connecting arm. The extrusion member is installed into the mounting cavity from the cavity opening, and the extrusion member can move along the rotation axis of the first connecting arm until the first protrusion extends into the limiting cavity.

8. The electronic device according to claim 1, characterized in that, The extrusion member is disposed on the first arc-shaped mating structure. When the electronic device is in the folded state, the first support compresses the extrusion member; when the electronic device is in the unfolded state, the first support separates from the extrusion member.

9. The electronic device according to claim 1, characterized in that, The electronic device includes a second support and a second connecting arm. The second support is used to support the screen of the electronic device. The first end of the second connecting arm is rotatably mounted on the second support. The second end of the second connecting arm is provided with a third arc-shaped fitting structure. The third arc-shaped fitting structure is rotatably fitted with the base. The pressing member is provided between the second support and the second connecting arm. When the electronic device is in a folded state, the pressing member abuts between the third arc-shaped mating structure and the second support; When the electronic device is in the deployed state, one of the second support and the third arc-shaped mating structure separates from the extruder.

10. The electronic device according to claim 1, characterized in that, The extruded component is a self-lubricating structural component.

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