Hinge mechanism and electronic device
By designing corner surfaces with increasing curvature on the swing arm and hinge bracket of the hinge mechanism, the problem of slippage failure in foldable electronic devices is solved, resulting in a longer service life and screen safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- VIVO MOBILE COMM CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-04-17
AI Technical Summary
During the sliding process of foldable electronic devices, the gap between the swing arm and the hinge bracket can cause screen damage and affect the service life.
The hinge mechanism is designed with swing arms and hinge supports such that the corner surfaces bend in an increasing degree away from the screen support surface, creating a smooth transition, reducing gaps and sharpness.
This effectively avoids slippage failure and improves the lifespan of electronic devices and the safety of the screen.
Smart Images
Figure CN224134995U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of communication technology, specifically relating to a hinge mechanism and an electronic device. Background Technology
[0002] With the development of technology, people are becoming increasingly reliant on electronic devices. To improve the portability and comfort of electronic devices, the application of foldable electronic devices is becoming more and more widespread.
[0003] Foldable electronic devices typically include a hinge mechanism and a screen. The hinge mechanism enables folding and unfolding. This mechanism comprises a hinge base, a hinge arm, and a hinge support. The hinge arm is rotatably connected to the hinge base, and the hinge support is opposite to it. The hinge arm and hinge support together support the screen. However, a gap exists between the hinge arm and the hinge support. During the sliding process, when the screen is pressed into this gap, the sharp corners of both the hinge arm and the hinge support can easily cause sliding failure, leading to screen damage and affecting the lifespan of the foldable electronic device. Utility Model Content
[0004] The purpose of this application is to provide a hinge mechanism and electronic device that can solve the problem of screen slippage failure in foldable electronic devices in related technologies.
[0005] In a first aspect, embodiments of this application provide a hinge mechanism, including a hinge base, a hinge bracket, and a swing arm. The swing arm is rotatably connected to the hinge base via a pivot, and the hinge bracket is connected to the hinge base.
[0006] The swing arm includes a first screen support surface and a first corner surface connected together. The first corner surface is located at the edge of the swing arm near the hinge bracket. The curvature of the first corner surface increases in the direction away from the first screen support surface.
[0007] And / or, the hinge bracket includes a connected second screen support surface and a second corner surface, the second corner surface being located at the edge of the hinge bracket near the swing arm, and the curvature of the second corner surface increasing along the direction away from the second screen support surface;
[0008] The first corner surface and the second corner surface are opposite each other.
[0009] Secondly, embodiments of this application also provide an electronic device, including a screen, a first device body, a second device body, and the aforementioned hinge mechanism, wherein the first device body is connected to the second device body through the hinge mechanism, and the screen is opposite to the first screen support surface of the swing arm;
[0010] During the relative rotation of the first device body and the second device body, the electronic device switches between an unfolded state and a folded state.
[0011] In this embodiment, a first corner surface is provided on the edge of the swing arm near the hinge bracket. The curvature of the first corner surface increases gradually along the direction away from the first screen support surface. That is, the curvature of the first corner surface near the first screen support surface is smaller. This part of the first corner surface has a smooth transition, avoiding the problem that the overall curvature of the first corner surface is large due to a constant curvature. This helps to reduce the sharpness of the first corner surface and effectively avoid the problem of slippage failure. Moreover, since the part of the first corner surface near the first screen support surface is relatively smooth and has a smaller curvature, it is conducive to the first corner surface extending to the position of the hinge bracket, thereby helping to reduce the gap between the swing arm and the hinge bracket and avoiding the problem of slippage failure caused by excessive gap.
[0012] And / or, a second corner surface is provided near the edge of the hinge bracket and the second corner surface is away from the second screen support surface. The curvature of the second corner surface increases gradually. That is, the curvature of the second corner surface near the second screen support surface is smaller. This part of the second corner surface has a smooth transition, which avoids the second corner surface having a constant curvature and thus a large overall curvature. This helps to reduce the sharpness of the second corner surface and effectively avoid the problem of slip failure. Moreover, since the second corner surface near the second screen support surface is relatively flat and has a smaller curvature, it is conducive to the second corner surface extending to the position of the swing arm. This helps to reduce the gap between the swing arm and the hinge bracket and avoid the problem of slip failure caused by excessive gap. Attached Figure Description
[0013] Figure 1 This is a partial structural schematic diagram of the hinge mechanism disclosed in the embodiments of this application;
[0014] Figure 2 This is an exploded view of a partial structure of the hinge mechanism disclosed in an embodiment of this application;
[0015] Figure 3 This is a cross-sectional view of a hinge mechanism disclosed in an embodiment of this application;
[0016] Figure 4 This is a cross-sectional view of a partial structure of a hinge mechanism disclosed in an embodiment of this application;
[0017] Figure 5 This is a cross-sectional view of a hinge mechanism disclosed in another embodiment of this application;
[0018] Figure 6This is a cross-sectional view of a partial structure of a hinge mechanism disclosed in another embodiment of this application;
[0019] Figure 7 This is a schematic diagram of the structure of the electronic device disclosed in the embodiments of this application.
[0020] Explanation of reference numerals in the attached figures:
[0021] 100-Hinge base, 100a-Spindle,
[0022] 200 - Swing arm, 210 - Swing arm body, 220 - First flexible component
[0023] 201 - First screen support surface, 202 - First corner surface, 202a - First curved surface, 203 - First connecting surface
[0024] 200a - First swing arm, 200b - Second swing arm
[0025] 300-Hinge bracket, 310-Bracket body, 320-Second flexible component
[0026] 301 - Second screen support surface, 302 - Second corner surface, 302a - Second curved surface, 303 - Second connecting surface
[0027] 410 - Third swing arm, 420 - Fourth swing arm
[0028] 500-Frame Bracket
[0029] 600-Connecting Plate
[0030] 710 - First main body of the device, 720 - Second main body of the device, 730 - Screen. Detailed Implementation
[0031] 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.
[0032] 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.
[0033] The hinge mechanism and electronic device provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.
[0034] Please refer to Figures 1-7 The hinge mechanism disclosed in this application includes a hinge base 100, a hinge bracket 300, and a swing arm 200. The hinge base 100 serves as the mounting base for the swing arm 200 and the hinge bracket 300. The hinge bracket 300 and the swing arm 200 are respectively mounted on the hinge base 100. The swing arm 200 can rotate relative to the hinge base 100. The hinge bracket 300 cooperates with the swing arm 200 to ensure the flatness of the hinge mechanism and support the screen 730 of the electronic device.
[0035] refer to Figures 3-6 As shown, the swing arm 200 is rotatably connected to the hinge base 100 via a rotating shaft 100a. Specifically, one end of the swing arm 200 is provided with a cylindrical part. The rotating shaft 100a and the hinge base 100 are fixedly connected by welding or other means, and the cylindrical part is sleeved outside the rotating shaft 100a. The rotating shaft 100a and the cylindrical part are rotatably engaged to realize the rotation of the swing arm 200 relative to the hinge base 100. The axis of rotation of the swing arm 200 is the axis of the rotating shaft 100a.
[0036] The hinge bracket 300 is connected to the hinge base 100. Optionally, the hinge bracket 300 is located on the side of the hinge base 100 facing the screen 730. The hinge bracket 300 and the hinge base 100 can be fixedly connected by means of bolts, welding or other methods, and the position of the hinge bracket 300 relative to the hinge base 100 is fixed.
[0037] In the embodiments of this application, reference is made to Figures 3-6As shown, the swing arm 200 includes a first screen support surface 201 and a first corner surface 202 connected together. The first screen support surface 201 is used to support the screen 730 of the electronic device and can directly contact the screen 730. The first corner surface 202 is located at the edge of the swing arm 200 near the hinge bracket 300, that is, the first corner surface 202 is located at the corner of the swing arm 200. Optionally, the first corner surface 202 is provided in the cylindrical part. Moreover, along the direction of the first corner surface 202 away from the first screen support surface 201, that is, along the direction of the first corner surface 202 near the hinge bracket 300, the curvature of the first corner surface 202 increases, and the curvature of the first corner becomes larger and larger.
[0038] In other words, the curvature of the first corner surface 202 near the first screen support surface 201 is relatively small. This part of the first corner surface 202 has a smooth transition, avoiding a constant curvature of the first corner surface 202 which would result in a large overall curvature of the first corner surface 202. This helps to reduce the sharpness of the first corner surface 202 and effectively avoid the problem of slippage failure. Moreover, since the part of the first corner surface 202 near the first screen support surface 201 is relatively smooth and has a small curvature, it is beneficial for the first corner surface 202 to extend towards the position of the hinge bracket 300, thereby helping to reduce the gap between the swing arm 200 and the hinge bracket 300 and avoiding the problem of slippage failure caused by excessive gap.
[0039] And / or, in the embodiments of this application, reference is made to Figures 3-6 As shown, the hinge bracket 300 includes a connected second screen support surface 301 and a second corner surface 302. The second screen support surface 301 also supports the screen 730 of the electronic device and can directly contact the screen 730. The second corner surface 302 is located at the edge of the hinge bracket 300 near the swing arm 200, that is, the second corner surface 302 is located at the corner of the hinge bracket 300. Moreover, along the direction of the second corner surface 302 away from the second screen support surface 301, that is, along the direction of the second corner surface 302 towards the swing arm 200, the curvature of the second corner surface 302 increases, and the curvature of the second corner becomes larger and larger.
[0040] In other words, the curvature of the second corner surface 302 near the second screen support surface 301 is relatively small. This part of the second corner surface 302 has a smooth transition, avoiding a constant curvature of the second corner surface 302 which would result in a large overall curvature of the second corner surface 302. This helps to reduce the sharpness of the second corner surface 302 and effectively avoid the problem of slip failure. Moreover, since the part of the second corner surface 302 near the second screen support surface 301 is relatively flat and has a small curvature, it is beneficial for the second corner surface 302 to extend towards the position of the swing arm 200, thereby reducing the gap between the swing arm 200 and the hinge bracket 300 and avoiding the problem of slip failure caused by excessive gap.
[0041] In this embodiment, the swing arm 200 is provided with a first corner surface 202, and the hinge bracket 300 is not provided with a second corner surface 302; or, the swing arm 200 is not provided with a first corner surface 202, and the hinge bracket 300 is provided with a second corner surface 302; or, the swing arm 200 is provided with a first corner surface 202, and the hinge bracket 300 is provided with a second corner surface 302. This helps to reduce the sharpness of the corner positions of the swing arm 200 and the hinge bracket 300, further effectively avoiding the problem of slippage failure. The first corner surface 202 and the second corner surface 302 are opposite each other, and the gap between them is further reduced, which helps to further reduce the gap between the swing arm 200 and the hinge bracket 300, avoiding excessive gap leading to slippage failure.
[0042] In the alternative solutions of this application, refer to Figure 4 As shown, the first corner surface 202 includes multiple sequentially connected first arc surfaces 202a. Along the direction away from the first screen support surface 201, the radius of curvature of each first arc surface 202a decreases. That is, among the multiple first arc surfaces 202a, the first arc surface 202a closer to the first screen support surface 201 has a larger radius of curvature, and the first arc surface 202a farther from the first screen support surface 201 has a smaller radius of curvature. Therefore, the first arc surface 202a closer to the first screen support surface 201 has a smaller degree of curvature, and the first arc surface 202a farther from the first screen support surface 201 has a larger degree of curvature.
[0043] Optionally, the number of first arc surfaces 202a can be two, three or more, and the specific number of first arc surfaces 202a is not limited in this embodiment.
[0044] In this embodiment, the first corner surface 202 is formed by multiple first arc surfaces 202a with variable rounded corner radii. The surface of the first arc surface 202a is relatively flat and smooth, which is more conducive to the process of gradually reducing the degree of bending of the first corner surface 202. This is beneficial to reducing stress concentration and improving structural strength, as well as improving aesthetic performance and reducing the difficulty of mold processing for manufacturing the swing arm 200.
[0045] In the alternative solutions of this application, refer to Figure 4 As shown, the second corner surface 302 includes a plurality of sequentially connected second arc surfaces 302a. Along the direction away from the second screen support surface 301, the radius of curvature of each second arc surface 302a decreases. That is, among the plurality of second arc surfaces 302a, the second arc surface 302a closer to the second screen support surface 301 has a larger radius of curvature, and the second arc surface 302a farther from the second screen support surface 301 has a smaller radius of curvature. Therefore, the second arc surface 302a closer to the second screen support surface 301 has a smaller degree of curvature, and the second arc surface 302a farther from the second screen support surface 301 has a larger degree of curvature.
[0046] Optionally, the number of second arc surfaces 302a can be two, three or more, and the specific number of second arc surfaces 302a is not limited in this embodiment.
[0047] In this embodiment, the second corner surface 302 is formed by multiple second arc surfaces 302a with variable fillet radii. The surface of the second arc surface 302a is relatively flat and smooth, which is more conducive to the process of gradually reducing the degree of bending of the second corner surface 302. This is beneficial to reducing stress concentration and improving structural strength, as well as improving aesthetic performance and reducing the difficulty of mold processing for manufacturing the hinge bracket 300.
[0048] Of course, in other embodiments, the first corner surface 202 and the second corner surface 302 may each include multiple non-arc curved surfaces.
[0049] In a further embodiment, the fillet radius of the first arc surface 202a connected to the first screen support surface 201 is a first radius, and the fillet radius of the second arc surface 302a connected to the second screen support surface 301 is a second radius, wherein the first radius and the second radius are equal. Optionally, both the first radius and the second radius are 0.5mm. Of course, the first radius and the second radius can also be other values, as long as they are equal.
[0050] Since the first screen support surface 201 and the second screen support surface 301 support the screen 730 simultaneously, the first arc surface 202a and the second arc surface 302a, which are closer to the screen 730, have the same radius of curvature. This indicates that the curvature of the first arc surface 202a and the second arc surface 302a, which are closer to the screen 730, is equal. Therefore, the support effect of the swing arm 200 and the hinge bracket 300 on the screen 730 tends to be equal, which is beneficial to improving the uniformity of support of the screen 730 and to stabilizing the support of the screen 730.
[0051] Of course, in other embodiments, the first radius and the second radius may not be equal. Optionally, the first radius may be greater than the second radius, or the first radius may be less than the second radius.
[0052] In a further embodiment, the difference in fillet radius between two adjacent first arc surfaces 202a and the difference in fillet radius between two adjacent second arc surfaces 302a are both greater than 0.1 mm and less than 0.5 mm.
[0053] Optionally, the difference in the fillet radius of two adjacent first arc surfaces 202a is 0.2mm. Further, the first corner surface 202 includes two first arc surfaces 202a. Along the direction of the first corner surface 202 away from the first screen support surface 201, the fillet radii of the two first arc surfaces 202a are 0.5mm and 0.3mm, respectively. Of course, the fillet radii of the two first arc surfaces 202a can also be other values, and the difference in the fillet radius of two adjacent first arc surfaces 202a can also be other values.
[0054] Optionally, the difference in the fillet radius of two adjacent second arc surfaces 302a is 0.4mm. Further, the second corner surface 302 includes two second arc surfaces 302a. Along the direction of the second corner surface 302 away from the second screen support surface 301, the fillet radii of the two second arc surfaces 302a are 0.5mm and 0.1mm, respectively. Of course, the fillet radii of the two second arc surfaces 302a can also be other values, and the difference in the fillet radius of two adjacent second arc surfaces 302a can also be other values.
[0055] By employing this embodiment, the difference in the rounded radii of two adjacent first arc surfaces 202a is avoided from being too large or too small, ensuring that the difference in rounded radii is within a suitable range. Consequently, along the direction of the first corner surface 202 away from the first screen support surface 201, the change in the curvature of the first corner surface 202 is within a suitable range. This avoids the first corner surface 202 from having an excessively large difference in rounded radii, which would lead to an excessively large change in the curvature of the first corner surface 202, thus preventing the first corner surface 202 from having a large sharpness. At the same time, it avoids the first corner surface 202 from having an excessively small difference in rounded radii, which would lead to an excessively small change in the curvature of the first corner surface 202, thus preventing the first corner surface 202 from extending towards the position of the hinge bracket 300, thereby preventing a large gap between the swing arm 200 and the hinge bracket 300.
[0056] Similarly, to avoid the difference between the fillet radii of two adjacent second arc surfaces 302a being too large or too small, and to ensure that the difference in fillet radii is within a suitable range, the change in the curvature of the second corner surface 302 along the direction away from the second screen support surface 301 is within a suitable range. This avoids the difference between the fillet radii of two adjacent second arc surfaces 302a being too large, which would lead to an excessive change in the curvature of the second corner surface 302, and thus avoids a large sharpness of the second corner surface 302. At the same time, it avoids the difference between the fillet radii of two adjacent second arc surfaces 302a being too small, which would lead to an excessively small change in the curvature of the second corner surface 302, and thus would be unfavorable for the second corner surface 302 to extend towards the position of the swing arm 200, thereby avoiding a large gap between the swing arm 200 and the hinge bracket 300.
[0057] Of course, in other embodiments, the difference in fillet radius between two adjacent first arc surfaces 202a and the difference in fillet radius between two adjacent second arc surfaces 302a can be less than 0.1mm or greater than 0.5mm.
[0058] In an optional embodiment, the difference in fillet radius between two adjacent first arc surfaces 202a is smaller than the difference in fillet radius between two adjacent second arc surfaces 302a. That is, the difference in fillet radius between two adjacent first arc surfaces 202a is smaller, while the difference in fillet radius between two adjacent second arc surfaces 302a is larger.
[0059] Optionally, the difference in fillet radius between two adjacent first arc surfaces 202a is 0.2 mm, and the difference in fillet radius between two adjacent second arc surfaces 302a is 0.4 mm. Of course, the difference in fillet radius between two adjacent first arc surfaces 202a and between two adjacent second arc surfaces 302a can also be other values.
[0060] refer to Figure 4 As shown, in addition to the first screen support surface 201 and the first corner surface 202, the swing arm 200 also includes a first connecting surface 203, which is connected to the first corner surface 202. The height direction of the first connecting surface 203 is approximately equal to that of the hinge mechanism. In other words, after passing through the first corner surface 202, the surface curvature angle of the swing arm 200 is 90°. In addition to the second screen support surface 301 and the second corner surface 302, the hinge bracket 300 also includes a second connecting surface 303, which is connected to the second corner surface 302. The second connecting surface 303 is opposite to the first connecting surface 203. The angle between the second connecting surface 303 and the height direction of the hinge mechanism is an acute angle. In other words, after passing through the second corner surface 302, the surface curvature angle of the hinge bracket 300 is greater than 90°, and the curvature angle of the second corner surface 302 is greater than that of the first corner surface 202.
[0061] Therefore, in this embodiment, the difference in the rounded corner radius between two adjacent first arc surfaces 202a is small, and the difference in the rounded corner radius between two adjacent second arc surfaces 302a is large. This is beneficial to achieve a smaller overall bending angle for the first corner surface 202 and a larger overall bending angle for the second corner surface 302, thereby achieving a smooth transition between the first screen support surface 201 and the first connecting surface 203, as well as a smooth transition between the second screen support surface 301 and the second connecting surface 303.
[0062] Of course, in other embodiments, the difference in fillet radius between two adjacent first arc surfaces 202a can be smaller than the difference in fillet radius between two adjacent second arc surfaces 302a.
[0063] In the alternative solutions of this application, refer to Figure 5 and Figure 6 As shown, the swing arm 200 includes a swing arm body 210 and a first flexible member 220. The swing arm body 210 has a first slot near the edge of the hinge bracket 300. That is, the first slot is provided at the corner position of the surface of the swing arm body 210. The first flexible member 220 is disposed in the first slot, and the surface of the first flexible member 220 forms a first corner surface 202.
[0064] Optionally, the material of the swing arm body 210 can be metal, specifically stainless steel, etc.; the swing arm body 210 includes the cylindrical part mentioned above, the first flexible component 220 has flexible properties, the structure of the first flexible component 220 is the same as the structure of the first slot, the first flexible component 220 is disposed in the first slot, and can realize the smooth connection between the first screen support surface 201 and the first corner surface 202.
[0065] Alternatively, the swing arm body 210 can be injection molded to form the first flexible component 220 within the first groove, thus integrating the swing arm body 210 with the first flexible component 220. Alternatively, 3D printing technology can be used to form the first flexible component 220 within the first groove on the swing arm body 210. This integration of the swing arm body 210 with the first flexible component 220 helps avoid stress concentration at the edges of the swing arm body 210, reduces the squeezing force exerted by the swing arm body 210 on the screen 730, and improves the sliding reliability of the screen 730.
[0066] In this embodiment, the corner of the swing arm 200 is a flexible structure. When the swing arm 200 supports the screen 730, the first flexible component 220 can deform, which increases the contact area between the first flexible component 220 and the screen 730 when the first flexible component 220 is squeezed, thereby avoiding stress concentration and damage to the screen 730 and ensuring the safety performance of the screen 730.
[0067] Of course, in other embodiments, the swing arm 200 may not have the first flexible member 220, and the swing arm 200 may be an integral structure.
[0068] In an optional embodiment of this application, the hinge bracket 300 includes a bracket body 310 and a second flexible member 320. The bracket body 310 is provided with a second slot near the edge of the swing arm 200. That is, the second slot is provided at the corner position of the surface of the hinge bracket 300. The second flexible member 320 is disposed in the second slot, and the surface of the second flexible member 320 forms a second corner surface 302.
[0069] Optionally, the support body 310 can be made of metal, specifically stainless steel, etc.; the second flexible component 320 has flexible properties, and the structure of the second flexible component 320 is the same as the structure of the second slot. The second flexible component 320 is set in the second slot, which can realize the smooth connection between the second screen support surface 301 and the second corner surface 302.
[0070] Alternatively, injection molding can be performed on the support body 310 to form a second flexible component 320 within the second groove, thus integrating the support body 310 and the second flexible component 320. Alternatively, 3D printing technology can be used on the support body 310 to form the second flexible component 320 within the second groove. This integration of the support body 310 and the second flexible component 320 helps avoid stress concentration at the corners of the support body 310, reduces the compressive force exerted by the support body 310 on the screen 730, and improves the sliding reliability of the screen 730.
[0071] In this embodiment, the corner of the hinge bracket 300 is a flexible structure. When the hinge bracket 300 supports the screen 730, the second flexible member 320 can deform, which increases the contact area between the second flexible member 320 and the screen 730 when the second flexible member 320 is squeezed, thereby avoiding stress concentration and damage to the screen 730 and ensuring the safety performance of the screen 730.
[0072] Of course, in other embodiments, the hinge bracket 300 may not have the second flexible member 320, and the hinge bracket 300 may be an integral structure.
[0073] In a further embodiment, the first flexible member 220 and / or the second flexible member 320 are made of rubber. Specifically, only the first flexible member 220 or only the second flexible member 320 may be made of rubber, or both the first flexible member 220 and the second flexible member 320 may be made of rubber.
[0074] Rubber exhibits excellent flexibility. In embodiments where the first flexible member 220 is made of rubber, its excellent deformation properties when in contact with the screen 730 facilitate an increase in the contact area between the first flexible member 220 and the screen 730, thereby further enhancing the safety performance of the screen 730. Similarly, in embodiments where the second flexible member 320 is made of rubber, its excellent deformation properties when in contact with the screen 730 also facilitate an increase in the contact area between the second flexible member 320 and the screen 730, further enhancing the safety performance of the screen 730.
[0075] Of course, in other embodiments, the first flexible member 220 and the second flexible member 320 can both be made of flexible materials other than rubber.
[0076] In the alternative solutions of this application, refer to Figure 1 As shown, there are at least two swing arms 200, including a first swing arm 200a and a second swing arm 200b, which are located on both sides of the hinge base 100. The first swing arm 200a and the second swing arm 200b are rotatably connected to the hinge base 100 via different pivots 100a.
[0077] In one alternative embodiment, one of the first swing arm 200a and the second swing arm 200b is provided with the first corner surface 202 mentioned above.
[0078] In another embodiment, both the first swing arm 200a and the second swing arm 200b are provided with the first corner surface 202 mentioned above, and the degree of curvature of the first corner surface 202 of the first swing arm 200a and the first corner surface 202 of the second swing arm 200b gradually changes.
[0079] In this embodiment, both the first swing arm 200a and the second swing arm 200b are provided with a first corner surface 202. Therefore, the degree of curvature at the corners of the swing arms 200 on both sides of the hinge bracket 300 is relatively small, which is beneficial for the first corner surfaces 202 of the swing arms 200 on both sides of the hinge bracket 300 to extend towards the position of the hinge bracket 300. The gaps between the first swing arm 200a and the second swing arm 200b and the hinge bracket 300 are relatively small, which is beneficial to further avoid the problem of slippage failure.
[0080] In one optional embodiment, the hinge bracket 300 is provided with a second corner surface 302 near the side edge of the first swing arm 200a, or the hinge bracket 300 is provided with a second corner surface 302 near the side edge of the second swing arm 200b.
[0081] In another embodiment, reference Figure 3 and Figure 4As shown, the hinge bracket 300 has a second corner surface 302 on both the side edge near the first swing arm 200a and the side edge near the second swing arm 200b. That is, the hinge bracket 300 has a second corner surface 302 on both sides.
[0082] In this embodiment, the hinge bracket 300 has a second corner surface 302 on both sides of its side edges. This reduces the curvature at the corners of the hinge bracket 300, which helps to reduce the sharpness of the side edges and further prevents slippage failure. Moreover, the second corner surfaces 302 on both sides of the hinge bracket 300 extend towards the position of the swing arm 200, which helps to reduce the gap between the side edges of the hinge bracket 300 and the swing arm 200, further preventing slippage failure.
[0083] In one optional embodiment, at least two swing arms 200 are provided at intervals along the direction of the rotation axis of the swing arm 200, and one of the swing arms 200 is provided with a first corner surface 202 near the edge of the hinge bracket 300.
[0084] In another embodiment, reference Figure 1 As shown, at least two swing arms 200 are provided at intervals along the direction of the rotation axis of the swing arm 200, and each swing arm 200 has a first corner surface 202 near the edge of the hinge bracket 300.
[0085] Optionally, along the direction of the rotation axis of the swing arm 200, a plurality of first swing arms 200a are provided on the first side of the hinge bracket 300, and a plurality of second swing arms 200b are provided on the second side of the hinge bracket 300. Each first swing arm 200a is provided with a first corner surface 202 near the edge of the hinge bracket 300, and each second swing arm 200b is provided with a first corner surface 202 near the edge of the hinge bracket 300.
[0086] In this embodiment, by increasing the number of swing arms 200 with the first corner surface 202 along the rotation axis of the swing arm 200, the curvature at the corners of different swing arms 200 is reduced, and the sharpness of the corners of multiple swing arms 200 is decreased, which helps to further avoid slippage failure. Simultaneously, it facilitates the extension of each swing arm 200 towards the hinge bracket 300, reducing the gap between each swing arm 200 and the hinge bracket 300, further effectively preventing slippage failure.
[0087] In an optional embodiment, refer to Figure 2As shown, the hinge mechanism also includes a third swing arm 410 and a fourth swing arm 420. The third swing arm 410 and the fourth swing arm 420 are located on both sides of the hinge base 100, respectively. The third swing arm 410 and the hinge base 100, and the fourth swing arm 420 and the hinge base 100 are rotatably connected by matching arc-shaped protrusions and arc-shaped grooves.
[0088] Optionally, the hinge mechanism further includes a frame support 500 and a connecting plate 600. Frame supports 500 and connecting plates 600 are provided on both sides of the hinge base 100. The frame support 500 on the first side of the hinge base 100 is slidably connected to the first swing arm 200a and the third swing arm 410, respectively. The frame support 500 on the second side of the hinge base 100 is slidably connected to the second swing arm 200b and the fourth swing arm 420, respectively. Connecting plates 600 are provided on both sides of the hinge base 100. The connecting plates 600 are connected to the frame support 500 and are opposite to the frame support 500 to cover the frame support 500 and improve the appearance of the hinge mechanism.
[0089] Based on the hinge mechanism disclosed in this application, with reference to Figure 7 As shown in the illustration, this application also discloses an electronic device, which includes a screen 730, a first device body 710, a second device body 720, and the aforementioned hinge mechanism. The first device body 710 is connected to the second device body 720 via the hinge mechanism, and the screen 730 is opposite to the first screen support surface 201 of the swing arm 200. During the relative rotation of the first device body 710 and the second device body 720, the electronic device switches between an unfolded state and a folded state.
[0090] Optionally, the frame bracket 500 located on the first side of the hinge base 100 is connected to the first device body 710, and the frame bracket 500 located on the second side of the hinge base 100 is connected to the second device body 720. Thus, during the relative rotation of the first device body 710 and the second device body 720, the first device body 710 drives the first swing arm 200a and the third swing arm 410 to rotate relative to the hinge base 100 via the frame bracket 500, and the second device body 720 drives the second swing arm 200b and the fourth swing arm 420 to rotate relative to the hinge base 100 via the corresponding frame bracket 500.
[0091] The screen 730 includes a first part, a second part, and a deformable part. The first part is connected to the first device body 710, the second part is connected to the second device body 720, and the deformable part is opposite to the hinge mechanism. During the relative rotation of the first device body 710 and the second device body 720, the deformable part deforms, and the screen 730 is folded or unfolded.
[0092] In this embodiment, the hinge arm 200 of the electronic device is provided with a first corner surface 202, and / or the hinge bracket 300 of the hinge mechanism is provided with a second corner surface 302, which helps to reduce the sharpness of the corner surface, reduce the gap between the hinge arm and the hinge bracket 300, and effectively avoid the problem of slippage failure.
[0093] The electronic devices disclosed in this application can be smartphones, tablets, e-book readers, wearable devices, video game consoles, etc. This application does not limit the specific types of electronic devices.
[0094] 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 mechanism, characterized by It includes a hinge base, a hinge bracket, and a swing arm. The swing arm is rotatably connected to the hinge base via a pivot, and the hinge bracket is connected to the hinge base. The swing arm includes a first screen support surface and a first corner surface connected together. The first corner surface is located at the edge of the swing arm near the hinge bracket. The curvature of the first corner surface increases in the direction away from the first screen support surface. And / or, the hinge bracket includes a connected second screen support surface and a second corner surface, the second corner surface being located at the edge of the hinge bracket near the swing arm, and the curvature of the second corner surface increasing along the direction away from the second screen support surface; The first corner surface and the second corner surface are opposite each other.
2. The hinge mechanism of claim 1, wherein, The first corner surface includes a plurality of sequentially connected first arc surfaces, and the radius of the rounded corners of each first arc surface decreases along the direction away from the first screen support surface of the first corner surface. And / or, the second corner surface includes a plurality of sequentially connected second arc surfaces, and the radius of the rounded corners of each second arc surface decreases in the direction away from the second screen support surface along the second corner surface.
3. The hinge mechanism of claim 2, wherein, The radius of the rounded corner of the first arc surface connected to the first screen support surface is the first radius, and the radius of the rounded corner of the second arc surface connected to the second screen support surface is the second radius. The first radius and the second radius are equal.
4. The hinge mechanism of claim 2, wherein, The difference in fillet radius between two adjacent first arc surfaces and the difference in fillet radius between two adjacent second arc surfaces are both greater than 0.1 mm and less than 0.5 mm.
5. The hinge mechanism of claim 2, wherein, The difference in fillet radius between two adjacent first arc surfaces is less than the difference in fillet radius between two adjacent second arc surfaces.
6. The hinge mechanism of claim 1, wherein, The swing arm includes a swing arm body and a first flexible component. The swing arm body has a first slot near the edge of the hinge bracket. The first flexible component is disposed in the first slot, and the surface of the first flexible component forms the first corner surface. And / or, the hinge bracket includes a bracket body and a second flexible member, the bracket body has a second slot near the edge of the swing arm, the second flexible member is disposed in the second slot, and the surface of the second flexible member forms the second corner surface.
7. The hinge mechanism of claim 6, wherein, The first flexible member and / or the second flexible member are made of rubber.
8. The hinge mechanism of claim 1, wherein, The number of swing arms is at least two, including a first swing arm and a second swing arm, which are respectively located on both sides of the hinge base. Both the first swing arm and the second swing arm are provided with the first corner surface; and / or, the hinge bracket is provided with the second corner surface near the side edge of the first swing arm and near the side edge of the second swing arm.
9. The hinge mechanism of claim 1, wherein, Along the direction of the rotation axis of the swing arm, at least two swing arms are spaced apart, and each swing arm has a first corner surface near the edge of the hinge bracket.
10. An electronic device, comprising: The device includes a screen, a first device body, a second device body, and a hinge mechanism as described in any one of claims 1-9, wherein the first device body is connected to the second device body through the hinge mechanism, and the screen is opposite to the first screen support surface of the swing arm. During the relative rotation of the first device body and the second device body, the electronic device switches between an unfolded state and a folded state.