Hinge mechanism and electronic device

Abstract

The application discloses a hinge mechanism and an electronic device, and belongs to the technical field of communication. The hinge mechanism comprises a base, a first swing arm, a second swing arm and a transmission connecting rod. The first swing arm and the second swing arm are respectively located on two sides of the base. The first swing arm and the second swing arm are both provided with arc-shaped protrusions. The base is provided with at least two arc-shaped grooves. The arc-shaped protrusions and the arc-shaped grooves are in one-to-one correspondence. Each arc-shaped protrusion respectively extends into the corresponding arc-shaped groove, and each arc-shaped protrusion is in sliding fit with the corresponding arc-shaped groove, so that the first swing arm and the second swing arm can rotate relative to the base. The transmission connecting rod is in sliding connection with the base along a first direction. The first direction intersects with the plane where the base is located. The transmission connecting rod is in transmission connection with the arc-shaped protrusions of the first swing arm and the second swing arm respectively. When one of the first swing arm and the second swing arm rotates relative to the base, the transmission connecting rod moves along the first direction and drives the other one to rotate relative to the base, so that the first swing arm and the second swing arm rotate synchronously.

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. In pursuit of a better visual experience, the screen sizes of electronic devices are getting larger and larger, but this has resulted in a significant reduction in the portability and user comfort of these devices.

[0003] To maintain portability and user comfort, foldable electronic devices are increasingly being used. In some related technologies, the hinge mechanism of foldable electronic devices relies on gear sets to achieve synchronous folding and unfolding. Since these gear sets consist of multiple sequentially meshing gears, and the gears themselves are relatively large and thick, the gear sets occupy a significant amount of space, resulting in a large space requirement for both the gear set and the hinge mechanism. This hinders the miniaturization of electronic devices. Summary of the Invention

[0004] The purpose of this application is to provide a hinge mechanism and electronic device that can solve the problem of large space occupation of hinge mechanisms in related technologies.

[0005] In a first aspect, embodiments of this application provide a hinge mechanism, including a base, a first swing arm, a second swing arm, and a transmission link. The first swing arm and the second swing arm are respectively located on both sides of the base. Both the first swing arm and the second swing arm are provided with arc-shaped protrusions. The base is provided with at least two arc-shaped grooves. The arc-shaped protrusions correspond one-to-one with the arc-shaped grooves. Each arc-shaped protrusion extends into the corresponding arc-shaped groove, and each arc-shaped protrusion slides into the corresponding arc-shaped groove, so that the first swing arm and the second swing arm can rotate relative to the base.

[0006] The transmission link is slidably connected to the base along a first direction, which intersects the plane of the base. The transmission link is also operatively connected to the arc-shaped protrusions of the first and second swing arms.

[0007] When one of the first swing arm and the second swing arm rotates relative to the base, the transmission link moves along the first direction and drives the other to rotate relative to the base, so that the first swing arm and the second swing arm rotate synchronously.

[0008] Secondly, embodiments of this application also provide an electronic device, including 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 via the hinge mechanism;

[0009] 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.

[0010] In this embodiment, the first and second swing arms of the hinge mechanism are rotatably connected to the base through an arc-shaped protrusion and an arc-shaped groove. Furthermore, the first and second swing arms are connected by a transmission link and rotate synchronously only through a transmission link. Since the transmission link is a rod-shaped structure, the number of transmission components is reduced compared to a complex gear set. The structure of the transmission components is simple, which reduces the space occupied by the hinge mechanism. Moreover, the transmission link can slide along the direction intersecting the plane where the base is located. Therefore, the range of motion of the transmission link is small in the direction of the rotation axis of the first and second swing arms, and the space occupied by the transmission link is also small, which is conducive to the miniaturization of electronic devices. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the hinge mechanism in the unfolded state as disclosed in the embodiments of this application;

[0012] Figure 2 This is a schematic diagram of the hinge mechanism in the unfolded state disclosed in an embodiment of this application from another perspective;

[0013] Figure 3 This is a schematic diagram of the hinge mechanism in the folded state disclosed in the embodiments of this application;

[0014] Figure 4 This is a schematic diagram of the hinge mechanism in the folded state as disclosed in an embodiment of this application from another perspective;

[0015] Figure 5 This is an exploded view of the hinge mechanism disclosed in the embodiments of this application;

[0016] Figure 6 This is an exploded view of a partial structure of the hinge mechanism disclosed in an embodiment of this application;

[0017] Figure 7 This is a partial structural schematic diagram of the hinge mechanism disclosed in the embodiments of this application;

[0018] Figure 8 This is a partial structural schematic diagram of the hinge mechanism in the unfolded state disclosed in the embodiments of this application;

[0019] Figure 9 This is a partial structural schematic diagram of the hinge mechanism in the folded state disclosed in the embodiments of this application;

[0020] Figure 10 This is a schematic diagram of the structure of the electronic device disclosed in the embodiments of this application.

[0021] Explanation of reference numerals in the attached figures:

[0022] 10-Hinge assembly

[0023] 100-Base, 110-Arc groove, 120-Guide component,

[0024] 210-First swing arm, 210a-First meshing tooth, 220-Second swing arm, 220a-Second meshing tooth, 201-Arch-shaped protrusion, 201a-Cylindrical protrusion

[0025] 300 - Transmission link, 310 - First transmission part, 320 - Second transmission part, 301 - Slot, 302 - Opening, A - First direction

[0026] 410 - First gear, 420 - Second gear

[0027] 510 - Third swing arm, 520 - Fourth swing arm, 500a - Cylindrical section, 501 - First cylindrical section, 502 - Second cylindrical section, 530 - First pivot, 540 - Second pivot, 550 - Snap ring.

[0028] 600 - Mating part, 610 - First mating part, 620 - Second mating part

[0029] 700 - Elastic component, 710 - First elastic component, 720 - Second elastic component

[0030] 810 - First frame bracket, 820 - Second frame bracket

[0031] 910 - First equipment body, 920 - Second equipment body. Detailed Implementation

[0032] 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.

[0033] 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.

[0034] 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.

[0035] Please refer to Figures 1-10 The hinge mechanism disclosed in this application includes a base 100, a first swing arm 210, a second swing arm 220, and a transmission link 300. The base 100 serves as the mounting base for the first swing arm 210, the second swing arm 220, and the transmission link 300. The first swing arm 210 and the second swing arm 220 are located on both sides of the base 100, and are rotatably connected to the base 100. The first swing arm 210 and the second swing arm 220 rotate synchronously through the transmission link 300.

[0036] Specifically, refer to Figure 6 As shown, both the first swing arm 210 and the second swing arm 220 are provided with arc-shaped protrusions 201, and the base 100 is provided with at least two arc-shaped grooves 110. The arc-shaped protrusions 201 and the arc-shaped grooves 110 correspond one-to-one, with each arc-shaped protrusion 201 extending into its corresponding arc-shaped groove 110 and slidingly engaging with it, allowing the first swing arm 210 and the second swing arm 220 to rotate relative to the base 100. During the rotation of the first swing arm 210 and the second swing arm 220 relative to the base 100, the arc-shaped protrusions 201 slide along the arc-shaped grooves 110. Thus, the first swing arm 210 and the second swing arm 220 are rotatably connected to the base 100 through the structure of the arc-shaped protrusions 201 and the arc-shaped grooves 110.

[0037] The transmission link 300 and the base 100 are slidably connected along the first direction A. Optionally, the transmission link 300 and the base 100 can be slidably connected by a matching slide rail and a slider, or by other structures.

[0038] The first direction A intersects the plane containing the base 100, and the transmission link 300 is respectively connected to the arcuate protrusion 201 of the first swing arm 210 and the arcuate protrusion 201 of the second swing arm 220. Optionally, the first direction A may be perpendicular to the rotation axis of the first swing arm 210 and the second swing arm 220; the first direction A may be perpendicular to the plane containing the base 100; or, the first direction A may intersect the plane containing the base 100 but not be perpendicular to it.

[0039] When one of the first swing arm 210 and the second swing arm 220 rotates relative to the base 100, the transmission link 300 moves along the first direction A and drives the other to rotate relative to the base 100, so that the first swing arm 210 and the second swing arm 220 rotate synchronously. Specifically, the transmission link 300 has a first transmission engagement structure with the arc-shaped protrusion 201 of the first swing arm 210, and the transmission link 300 has a second transmission engagement structure with the arc-shaped protrusion 201 of the second swing arm 220. When the first swing arm 210 rotates relative to the base 100, the rotational power of the arc-shaped protrusion 201 is converted into the moving power of the transmission link 300 through the first transmission engagement structure. That is, the first swing arm 210 drives the transmission link 300 to move along the first direction A. Furthermore, the moving power of the transmission link 300 is converted into the rotational power of the second swing arm 220 through the second transmission engagement structure. That is, when the transmission link 300 moves, it drives the second swing arm 220 to rotate relative to the base 100, thereby enabling the first swing arm 210 and the second swing arm 220 to rotate synchronously.

[0040] In this embodiment, the first swing arm 210 and the second swing arm 220 of the hinge mechanism are rotatably connected to the base 100 through the arc-shaped protrusion 201 and the arc-shaped groove 110. Furthermore, the first swing arm 210 and the second swing arm 220 are connected by transmission link 300 and rotate synchronously. Since the transmission link 300 is a rod-shaped structure, compared with the complex gear set, the number of transmission components is reduced and the structure of the transmission components is simple, which reduces the space occupied by the hinge mechanism. Moreover, the transmission link 300 can slide along the direction intersecting the plane where the base 100 is located. Therefore, in the direction where the rotation axis of the first swing arm 210 and the second swing arm 220 is located, the range of motion of the transmission link 300 is small and the space occupied by the transmission link 300 is also small, which is conducive to the miniaturization of electronic devices.

[0041] In related technologies, hinge mechanisms typically employ multiple sequentially meshing gears to achieve synchronous rotation in the width direction, and the gears have a certain length in the axial direction of the first swing arm 210 (i.e., in the length direction of the hinge mechanism). However, the embodiment of this application does not require synchronization through gears, thus saving space in the width direction of the hinge mechanism. Furthermore, compared with gears in related technologies, the transmission link 300 has a smaller dimension in the length direction of the hinge mechanism, thus also saving space in the length direction of the hinge mechanism.

[0042] In an optional embodiment, refer to Figures 6-9As shown, both the arc-shaped protrusion 201 of the first swing arm 210 and the arc-shaped protrusion 201 of the second swing arm 220 are provided with cylindrical protrusions 201a. Optionally, along the rotation axis of the first swing arm 210, the cylindrical protrusion 201a protrudes from the end face of the arc-shaped protrusion 201. The cylindrical protrusion 201a can be a cylindrical protrusion or a prismatic protrusion. The embodiments of this application do not limit the structure of the cylindrical protrusion 201a, and the cylindrical protrusion 201a and the arc-shaped protrusion 201 can be an integral structure. The transmission connecting rod 300 is provided with at least two strip grooves 301. The extending direction of the strip grooves 301 intersects with the first direction A. Optionally, the extending direction of the strip grooves 301 is perpendicular to the first direction A. Each cylindrical protrusion 201a corresponds one-to-one with a strip groove 301, with each protrusion 201a extending into its corresponding groove 301 and slidingly engaging with it. In other words, the first swing arm 210 and the transmission link 300 are connected via the engaging cylindrical protrusions 201a and grooves 301, and the second swing arm 220 and the transmission link 300 are also connected via the engaging cylindrical protrusions 201a and grooves 301.

[0043] Optionally, the first swing arm 210 and the transmission link 300 are connected by at least one set of cooperating cylindrical protrusions 201a and strip grooves 301, and the second swing arm 220 and the transmission link 300 are also connected by at least one set of cooperating cylindrical protrusions 201a and strip grooves 301. The strip grooves 301 for cooperating with the first swing arm 210 and the strip grooves 301 for cooperating with the second swing arm 220 are arranged side by side.

[0044] When the first swing arm 210 and the second swing arm 220 rotate relative to the base 100, each cylindrical protrusion 201a slides along the extension direction of the strip groove 301, and the transmission link 300 slides relative to the base 100 along the first direction A. Specifically, when the arc protrusion 201 rotates relative to the base 100, the cylindrical protrusion 201a follows the arc protrusion 201 in rotating relative to the base 100. The cylindrical protrusion 201a applies a force to the transmission link 300. The force applied by the cylindrical protrusion 201a is decomposed into a force along the first direction A and a force along the extension direction of the strip groove 301. Due to the arrangement of the strip groove 301, the force along the extension direction of the strip groove 301 causes the cylindrical protrusion 201a to slide relative to the transmission link 300 along the first direction A. Therefore, this force will not cause the transmission link 300 to move, while the force along the first direction A directly drives the transmission link 300 to move along the first direction A.

[0045] In this embodiment, the arc-shaped protrusion 201a and the transmission connecting rod 300 are connected by the structure of the cylindrical protrusion 201a and the strip groove 301. Only the cylindrical protrusion 201a and the strip groove 301 need to be set. There is no need to add additional transmission components, which helps to simplify the transmission connection structure between the arc-shaped protrusion 201 and the transmission connecting rod 300.

[0046] Of course, in other embodiments, a transmission component can be provided between the arc-shaped protrusion 201 and the transmission link 300, the arc-shaped protrusion 201 and the transmission component are connected in a transmission manner, and the transmission link 300 and the transmission component are connected in a transmission manner, thereby realizing the transmission cooperation between the arc-shaped protrusion 201 and the transmission link 300.

[0047] In this application, the hinge mechanism further includes a first gear 410 and a second gear 420. The first gear 410 and the second gear 420 are rotatably mounted on the base 100. The arcuate protrusion 201 of the first swing arm 210 is provided with multiple first meshing teeth 210a spaced apart around its own rotation axis. The arcuate protrusion 201 of the second swing arm 220 is provided with multiple second meshing teeth 220a spaced apart around its own rotation axis. The first gear 410 meshes with the first meshing teeth 210a, and the second gear 420 meshes with the second meshing teeth 220a. Thus, when the arcuate protrusion 201 of the first swing arm 210 rotates relative to the base 100, the first gear 410 also rotates relative to the base 100; similarly, when the arcuate protrusion 201 of the second swing arm 220 rotates relative to the base 100, the second gear 420 also rotates relative to the base 100.

[0048] Optionally, the base 100 may be provided with a first fixed shaft and a second fixed shaft, a first gear 410 is sleeved on the outside of the first fixed shaft and can rotate relative to the first fixed shaft, and a second gear 420 is sleeved on the outside of the second fixed shaft and can rotate relative to the second fixed shaft.

[0049] In this embodiment, the meshing first gear 410 and the first meshing tooth 210a ensure that the first swing arm 210 rotates smoothly relative to the base 100, preventing the first swing arm 210 from retracting when it rotates to a certain position relative to the base 100. Similarly, the meshing second gear 420 and the second meshing tooth 220a ensure that the second swing arm 220 rotates smoothly relative to the base 100, preventing the second swing arm 220 from retracting when it rotates to a certain position relative to the base 100.

[0050] Of course, in other embodiments, the hinge mechanism may not have the first gear 410 and the second gear 420, the arc-shaped protrusion 201 of the first swing arm 210 may not have the first meshing tooth 210a, and the arc-shaped protrusion 201 of the second swing arm 220 may not have the second meshing tooth 220a.

[0051] In a further embodiment, reference is made to... Figure 8 and Figure 9 As shown, the first meshing tooth 210a is disposed on the outer side of the arcuate protrusion 201 of the first rocker arm 210, and the first gear 410 is located on the side of the arcuate protrusion 201 of the first rocker arm 210 facing away from the arcuate protrusion 201 of the second rocker arm 220. Specifically, the arcuate protrusion 201 of the first rocker arm 210 has a first inner surface and a first outer surface, and the first meshing tooth 210a is disposed on the first outer surface.

[0052] During the sliding process of the arc-shaped protrusion 201 relative to the arc-shaped groove 110, the transmission link 300 will move along the first direction A in the area corresponding to the arc-shaped groove 110. In this embodiment, the first meshing tooth 210a and the first gear 410 are both located outside the arc-shaped protrusion 201 of the first rocker arm 210. The first meshing tooth 210a and the first gear 410 are relatively far away from the transmission link 300 to avoid affecting the cooperation structure between the arc-shaped protrusion 201 of the first rocker arm 210 and the transmission link 300.

[0053] Of course, in other embodiments, the first meshing tooth 210a and the first gear 410 may be disposed on the inner side of the arcuate protrusion 201 of the first rocker arm 210.

[0054] In a further embodiment, the second meshing tooth 220a is disposed on the outer side of the arcuate protrusion 201 of the second rocker arm 220, and the second gear 420 is located on the side of the arcuate protrusion 201 of the second rocker arm 220 facing away from the arcuate protrusion 201 of the first rocker arm 210. Specifically, the arcuate protrusion 201 of the second rocker arm 220 has a second inner surface and a second outer surface, and the second meshing tooth 220a is disposed on the second outer surface.

[0055] During the sliding process of the arc-shaped protrusion 201 relative to the arc-shaped groove 110, the transmission link 300 will move along the first direction A in the area corresponding to the arc-shaped groove 110. In this embodiment, the second meshing tooth 220a and the second gear 420 are both located outside the arc-shaped protrusion 201 of the second swing arm 220. The second meshing tooth 220a and the second gear 420 are relatively far away from the transmission link 300 to avoid affecting the cooperation structure between the arc-shaped protrusion 201 of the second swing arm 220 and the transmission link 300.

[0056] Of course, in other embodiments, the second meshing tooth 220a and the second gear 420 may be disposed on the inner side of the arcuate protrusion 201 of the second rocker arm 220.

[0057] In one optional embodiment, there is one first swing arm 210 and one second swing arm 220. The transmission link 300 includes a first transmission part 310 and a second transmission part 320 connected together. The first transmission part 310 is opposite to the first swing arm 210, and the second transmission part 320 is opposite to the second swing arm 220. The first transmission part 310 is provided with a strip groove 301, which corresponds to and engages with the cylindrical protrusion 201a of the first swing arm 210. The second transmission part 320 is provided with a strip groove 301, which corresponds to and engages with the cylindrical protrusion 201a of the second swing arm 220.

[0058] In another embodiment, reference Figures 5-7 As shown, there are multiple first swing arms 210 and second swing arms 220, with one first swing arm 210 corresponding to one second swing arm 220. Each first swing arm 210 and each second swing arm 220 is spaced apart along the direction of the rotation axis of the first swing arm 210. In this way, the multiple sets of corresponding first swing arms 210 and second swing arms 220 facilitate the smooth folding or unfolding of the hinge mechanism.

[0059] The first transmission part 310 is provided with at least two strip grooves 301, and each arc-shaped protrusion 201 of the first swing arm 210 is provided with a cylindrical protrusion 201a. The at least two strip grooves 301 of the first transmission part 310 are respectively matched with the cylindrical protrusions 201a of each first swing arm 210. That is to say, at least two first swing arms 210 are simultaneously driven and engaged with the first transmission part 310, and at least two first swing arms 210 rotate synchronously. The second transmission part 320 is provided with at least two strip grooves 301, and each arc-shaped protrusion 201 of the second swing arm 220 is provided with a cylindrical protrusion 201a. The at least two strip grooves 301 of the second transmission part 320 are respectively matched with the cylindrical protrusions 201a of each second swing arm 220. That is to say, at least two second swing arms 220 are simultaneously driven and engaged with the second transmission part 320, and at least two second swing arms 220 rotate synchronously.

[0060] In this embodiment, when the transmission link 300 moves relative to the base 100 along the first direction A, the first transmission part 310 drives different first swing arms 210 to rotate through different strip grooves 301 and cylindrical protrusions 201a, thereby realizing the synchronous rotation of multiple first swing arms 210; at the same time, the second transmission part 320 drives different second swing arms 220 to rotate through different strip grooves 301 and cylindrical protrusions 201a, thereby realizing the synchronous rotation of multiple second swing arms 220.

[0061] Thus, the corresponding first swing arm 210 and second swing arm 220 not only achieve synchronous rotation through the transmission link 300, but also the multiple first swing arms 210 located on the same side of the base 100 and the multiple second swing arms 220 located on the same side of the base 100 achieve synchronous rotation through the transmission link 300. That is, each first swing arm 210 and each second swing arm 220 achieve synchronous rotation through the transmission link 300.

[0062] In related technologies, each first swing arm 210 and each second swing arm 220 is provided with at least two arc-shaped protrusions 201. Therefore, when installing the first swing arm 210 and the second swing arm 220, it is necessary to ensure that at least two arc-shaped protrusions 201 simultaneously engage with the corresponding arc-shaped grooves 110, requiring high precision in the engagement. However, in the embodiment of this application, the number of first swing arms 210 and second swing arms 220 is increased, and each first swing arm 210 and each second swing arm 220 is provided with one arc-shaped protrusion 201. Each arc-shaped protrusion 201 can accurately engage with the corresponding arc-shaped grooves 110, reducing the precision requirement in the engagement.

[0063] In a further embodiment, reference is made to... Figure 7 As shown, the transmission link 300 located between two adjacent first swing arms 210 is a one-piece molded structure, that is, the transmission link 300 located between two adjacent second swing arms 220 is a one-piece molded structure. In other words, the one-piece molded transmission link 300 simultaneously engages with the two adjacent first swing arms 210 and the two adjacent second swing arms 220 in transmission.

[0064] Optionally, in the direction of the rotation axis of the first swing arm 210, strip grooves 301 are provided on both opposite sides of the first transmission part 310, and the cylindrical protrusions 201a provided on two adjacent first swing arms 210 respectively cooperate with the strip grooves 301 on both opposite sides of the first transmission part 310; similarly, in the direction of the rotation axis of the first swing arm 210, strip grooves 301 are provided on both opposite sides of the second transmission part 320, and the cylindrical protrusions 201a provided on two adjacent second swing arms 220 respectively cooperate with the strip grooves 301 on both opposite sides of the second transmission part 320; the first transmission part 310 and the second transmission part 320 have the same structure, and the first transmission part 310 and the second transmission part 320 are integrally formed structures.

[0065] Alternatively, the transmission link 300 can be formed into an integral structure by injection molding, casting, or other methods.

[0066] In this embodiment, the first transmission part 310 and the second transmission part 320 of the transmission link 300 are connected as one unit, that is, all the connection points of the transmission link 300 are integrated, which improves the strength of the transmission link 300 and is more conducive to the simultaneous transmission and cooperation of each part of the transmission link 300 with the two adjacent first swing arms 210 and the two adjacent second swing arms 220, thereby improving synchronization.

[0067] Of course, in other embodiments, the transmission link 300 located between two adjacent first swing arms 210 can be a split structure, and different split structures of the transmission link 300 are respectively connected to different first swing arms 210 for transmission.

[0068] In an optional embodiment, the base 100 is provided with a guide member 120, and the transmission link 300 is guided and engaged with the guide member 120 in the first direction A. Optionally, the guide member 120 can be a guide post extending along the first direction A, and the guide post can be provided with a guide groove along the first direction A. The transmission link 300 is provided with a guide protrusion, and the guide protrusion is guided and engaged with the guide groove. Alternatively, the transmission link 300 can be directly provided with an opening 302, and the guide post passes through the opening 302, and the guide post is guided and engaged with the transmission link 300. Of course, the guide member 120 can also adopt other structures besides a guide post.

[0069] In this embodiment, the base 100, through the guide member 120, guides the transmission link 300 in its movement direction, which facilitates the accurate movement of the transmission link 300 along the first direction A. Furthermore, only the guide member 120 is required, eliminating the need for complex slide rails and slider structures, thus simplifying the guiding structure.

[0070] In the scheme of this application, combined with Figures 1-5 As shown, the hinge mechanism also includes a third swing arm 510, a fourth swing arm 520, a mating component 600, and an elastic component 700. The third swing arm 510, the fourth swing arm 520, the mating component 600, and the elastic component 700 cooperate to provide damping force during the folding or unfolding process of the hinge mechanism. Specifically, the third swing arm 510 and the fourth swing arm 520 are located on opposite sides of the base 100 and are rotatably connected to the base 100. The rotation axis of the third swing arm 510 is parallel to the rotation axis of the fourth swing arm 520. It should be noted that the rotation axis of the third swing arm 510 is different from the rotation axis of the first swing arm 210.

[0071] Both the third swing arm 510 and the fourth swing arm 520 include a cylindrical portion 500a, which mates with a mating member 600. The mating member 600 and the elastic member 700 are sequentially arranged in the direction of the rotation axis of the cylindrical portion 500a. The elastic member 700 may be, but is not limited to, a spring. When the cylindrical portion 500a rotates relative to the base 100, the mating member 600 moves along the direction of the rotation axis of the cylindrical portion 500a, and the mating member 600 acts on the elastic member 700 to cause elastic deformation in the elastic member 700.

[0072] Optionally, the hinge mechanism further includes a first rotating shaft 530 and a second rotating shaft 540, the first rotating shaft 530 and the second rotating shaft 540 being parallel to each other and disposed on the base 100. The cylindrical portion 500a of the third swing arm 510 is sleeved outside the first rotating shaft 530, and the cylindrical portion 500a of the third swing arm 510 is rotatably engaged with the first rotating shaft 530. The cylindrical portion 500a of the fourth swing arm 520 is sleeved outside the second rotating shaft 540, and the cylindrical portion 500a of the fourth swing arm 520 is rotatably engaged with the second rotating shaft 540, thereby realizing the rotatable connection between the third swing arm 510 and the fourth swing arm 520 and the base 100, respectively. Further optionally, elastic elements 700 are sleeved on the outside of both the first rotating shaft 530 and the second rotating shaft 540. The number of elastic elements 700 is not limited in this embodiment.

[0073] Optionally, both the cylindrical portion 500a of the third swing arm 510 and the cylindrical portion 500a of the fourth swing arm 520 are provided with a first driving surface, and the mating component 600 is provided with at least two second driving surfaces. The first driving surfaces and the second driving surfaces are matched one-to-one. Therefore, when the cylindrical portion 500a rotates relative to the base 100, the first driving surfaces and the second driving surfaces drive the mating component 600 to move along the direction of the rotation axis of the cylindrical portion 500a. In turn, the mating component 600 compresses the elastic component 700, causing the elastic component 700 to undergo elastic deformation and accumulate elastic potential energy. At the same time, the elastic component 700 exerts a reverse force on the mating component 600, causing the mating component 600 to compress the third swing arm 510 and the fourth swing arm 520 in the opposite direction, thereby hindering the rotation of the third swing arm 510 and the fourth swing arm 520 relative to the base 100 and providing rotational damping.

[0074] Further optionally, each mating part 600 includes a first mating part, a connecting part, and a second mating part connected together. The first mating part is sleeved on the outside of the first rotating shaft 530, and the second mating part is sleeved on the outside of the second rotating shaft 540. The first mating part mates with the cylindrical part 500a of the first swing arm 210, and the second mating part mates with the cylindrical part 500a of the second swing arm 220.

[0075] In this embodiment, the rotational power of the third swing arm 510 and the fourth swing arm 520 is converted into the moving power of the mating part 600, which in turn causes the elastic part 700 to undergo elastic deformation. The elastic part 700 acts in the opposite direction to the third swing arm 510 and the fourth swing arm 520 through the mating part 600, providing rotational damping, which helps to improve the feel of the hinge mechanism during folding or unfolding.

[0076] Optionally, the hinge mechanism further includes a retaining ring 550. Both the first rotating shaft 530 and the second rotating shaft 540 are provided with retaining rings 550. The retaining ring 550 provided on the first rotating shaft 530 is in a limiting engagement with the cylindrical portion 500a of the third swing arm 510 along the first rotating shaft 530. The retaining ring 550 provided on the second rotating shaft 540 is in a limiting engagement with the cylindrical portion 500a of the third swing arm 510 along the second rotating shaft 540, thereby ensuring that the axial positions of the third swing arm 510 and the fourth swing arm 520 relative to the base 100 are fixed.

[0077] Of course, in other embodiments, the hinge mechanism may omit the third swing arm 510, the fourth swing arm 520, the mating part 600, and the elastic part 700 to improve the rotation feel.

[0078] In one optional embodiment, both the third swing arm 510 and the fourth swing arm 520 include a cylindrical portion 500a, and the number of mating parts 600 is also one. One end of the elastic member 700 is a fixed end. When the third swing arm 510 and the fourth swing arm 520 rotate, the cylindrical portion 500a acts on the mating part 600, and the mating part 600 moves along the direction of the rotation axis of the cylindrical portion 500a and acts on the other end of the elastic member 700.

[0079] In another embodiment, reference Figures 1-5 As shown, both the third swing arm 510 and the fourth swing arm 520 include at least two cylindrical portions 500a, that is, the number of cylindrical portions 500a is at least two, including a first cylindrical portion 501 and a second cylindrical portion 502. The first cylindrical portion 501 and the second cylindrical portion 502 are spaced apart along the direction of the rotation axis of the third swing arm 510. The number of mating parts 600 is at least two, including a first mating part 610 and a second mating part 620. The first mating part 610 and the second mating part 620 are both located between the first cylindrical portion 501 and the second cylindrical portion 502, and the first mating part 610 mates with the first cylindrical portion 501, and the second mating part 620 mates with the second cylindrical portion 502. The elastic member 700 is located between the first mating part 610 and the second mating part 620. Thus, when the first cylindrical portion 501 and the second cylindrical portion 502 rotate relative to the base 100, the first mating part 610 and the second mating part 620 can move closer to each other and act together on the elastic member 700.

[0080] In this embodiment, the same third swing arm 510 and the same fourth swing arm 520 act on different mating parts 600 using different cylindrical portions 500a, thereby causing elastic deformation at both ends of the elastic member 700. This increases the elastic deformation of the elastic member 700. Consequently, the damping force applied by the elastic member 700 to the third swing arm 510 and the fourth swing arm 520 through the mating part 600 is increased, which further enhances the damping feel.

[0081] In this embodiment, reference Figure 5 As shown, there are at least two third swing arms 510 and four swing arms 520, and multiple mating parts 600 and elastic elements 700. One third swing arm 510 and one fourth swing arm 520 each include a first cylindrical portion 501 and a second cylindrical portion 502, with a first mating part 610, a second mating part 620, and an elastic element 700 between the first cylindrical portion 501 and the second cylindrical portion 502. The other third swing arm 510 and the other fourth swing arm 520 each include a cylindrical portion 500a, which acts on other elastic elements 700 through other mating parts 600. Thus, the hinge mechanism has multiple sets of mating third swing arms 510, fourth swing arms 520, mating parts 600, and elastic elements 700, which helps to further increase the elastic deformation and further improve the damping feel.

[0082] Optionally, the plurality of elastic elements 700 includes a first elastic element 710 and a second elastic element 720. The first elastic element 710 is sleeved on the outside of the first rotating shaft 530 and the second rotating shaft 540, that is, the first elastic element 710 is opposite to the cylindrical part 500a, and the second elastic element 720 is located between the first rotating shaft 530 and the second rotating shaft 540.

[0083] In an optional embodiment, refer to Figures 1-5 As shown, the hinge mechanism also includes a first frame bracket 810 and a second frame bracket 820. The first frame bracket 810 and the second frame bracket 820 are located on both sides of the base 100, and the first frame bracket 810 is rotatably connected to the first swing arm 210, and the second frame bracket 820 is rotatably connected to the second swing arm 220. Optionally, the first frame bracket 810 is slidably connected to the third swing arm 510, and the second frame bracket 820 is slidably connected to the fourth swing arm 520.

[0084] In summary, the base 100, the first swing arm 210, the second swing arm 220, the transmission link 300, the third swing arm 510, the fourth swing arm 520, the mating part 600, and the elastic part 700 form a hinge assembly 10. The hinge mechanism may include multiple hinge assemblies 10, which are arranged sequentially along the axial direction of the first swing arm 210.

[0085] Based on the hinge mechanism disclosed in this application, this application also discloses an electronic device. The electronic device includes a first device body 910, a second device body 920, and the hinge mechanism described in the above embodiments. The first device body 910 is connected to the second device body 920 via the hinge mechanism. During the relative rotation of the first device body 910 and the second device body 920, the electronic device switches between an unfolded state and a folded state.

[0086] Optionally, the first device body 910 is connected to the first swing arm 210 through the first frame bracket 810, and the second device body 920 is connected to the second swing arm 220 through the second frame bracket 820. That is, the first device body 910 drives the first swing arm 210 to rotate relative to the base 100 through the first frame bracket 810, and the second device body 920 drives the second swing arm 220 to rotate relative to the base 100 through the second frame bracket 820.

[0087] In this embodiment, the first swing arm 210 and the second swing arm 220 of the hinge mechanism of the electronic device rotate synchronously through the transmission link 300. The number of transmission components is reduced, the structure of the transmission link 300 is simple, and the space occupied is reduced, which reduces the space occupied by the hinge mechanism and is conducive to the miniaturization of the electronic device.

[0088] 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 in that, The device includes a base, a first swing arm, a second swing arm, and a transmission link. The first swing arm and the second swing arm are located on both sides of the base. Both the first swing arm and the second swing arm are provided with arc-shaped protrusions. The base is provided with at least two arc-shaped grooves. The arc-shaped protrusions correspond one-to-one with the arc-shaped grooves. Each arc-shaped protrusion extends into the corresponding arc-shaped groove, and each arc-shaped protrusion slides into the corresponding arc-shaped groove, so that the first swing arm and the second swing arm can rotate relative to the base. The transmission link is slidably connected to the base along a first direction, which intersects the plane of the base. The transmission link is also operatively connected to the arc-shaped protrusions of the first and second swing arms. When one of the first swing arm and the second swing arm rotates relative to the base, the transmission link moves along the first direction and drives the other to rotate relative to the base, so that the first swing arm and the second swing arm rotate synchronously. Both the arc-shaped protrusion of the first swing arm and the arc-shaped protrusion of the second swing arm are provided with columnar protrusions. The transmission connecting rod is provided with at least two strip grooves. The extension direction of the strip grooves is perpendicular to the first direction. The columnar protrusions correspond one-to-one with the strip grooves. Each columnar protrusion extends into the corresponding strip groove, and each columnar protrusion slides into the corresponding strip groove. When the first swing arm and the second swing arm rotate relative to the base, each of the cylindrical protrusions slides along the extension direction of the strip groove, and the transmission link slides relative to the base along the first direction; The hinge mechanism further includes a first gear and a second gear, which are rotatably mounted on the base. The arc-shaped protrusion of the first swing arm is provided with a plurality of first meshing teeth at intervals around its own rotation axis, and the arc-shaped protrusion of the second swing arm is provided with a plurality of second meshing teeth at intervals around its own rotation axis. The first gear meshes with the first meshing teeth, and the second gear meshes with the second meshing teeth. The first meshing tooth is disposed on the outside of the arc-shaped protrusion of the first swing arm, and the first gear is located on the side of the arc-shaped protrusion of the first swing arm that faces away from the arc-shaped protrusion of the second swing arm; And / or, the second meshing tooth is disposed on the outside of the arcuate protrusion of the second swing arm, and the second gear is located on the side of the arcuate protrusion of the second swing arm facing away from the arcuate protrusion of the first swing arm.

2. The hinge mechanism according to claim 1, characterized in that, There are multiple first swing arms and multiple second swing arms, with one first swing arm corresponding to one second swing arm. Each first swing arm and each second swing arm is spaced apart in the direction of the rotation axis of the first swing arm. The transmission link includes a first transmission part and a second transmission part connected together. The first transmission part is opposite to the first swing arm. The first transmission part is provided with at least two strip grooves. Each arc-shaped protrusion of the first swing arm is provided with a cylindrical protrusion. The at least two strip grooves of the first transmission part are respectively matched with the cylindrical protrusions of each first swing arm. The second transmission part is opposite to the second swing arm. The second transmission part is provided with at least two strip grooves. Each arc-shaped protrusion of the second swing arm is provided with a cylindrical protrusion. The at least two strip grooves of the second transmission part are respectively matched with the cylindrical protrusions of each second swing arm.

3. The hinge mechanism according to claim 2, characterized in that, The transmission link located between two adjacent first swing arms is a one-piece molded structure.

4. The hinge mechanism according to claim 1, characterized in that, The base is provided with a guide member, and the transmission connecting rod is guided and engaged with the guide member in the first direction.

5. The hinge mechanism according to claim 1, characterized in that, The hinge mechanism further includes a third swing arm, a fourth swing arm, a mating component, and an elastic component. The third and fourth swing arms are located on opposite sides of the base and are rotatably connected to the base. Both the first and second swing arms include a cylindrical portion that mates with the mating component. When the cylindrical part rotates relative to the base, the mating member moves along the direction of the rotation axis of the cylindrical part, and the mating member acts on the elastic member to cause the elastic member to undergo elastic deformation.

6. The hinge mechanism according to claim 5, characterized in that, The number of the cylindrical sections is at least two, including a first cylindrical section and a second cylindrical section, which are spaced apart along the direction of the rotation axis of the third swing arm. The number of the mating parts is at least two, including a first mating part and a second mating part. Both the first mating member and the second mating member are located between the first cylindrical portion and the second cylindrical portion, with the first mating member mating with the first cylindrical portion and the second mating member mating with the second cylindrical portion. The elastic member is located between the first mating member and the second mating member. When the first cylindrical portion and the second cylindrical portion rotate relative to the base, the first mating member and the second mating member can move closer to each other and act together on the elastic member.

7. An electronic device, characterized in that, It includes a first device body, a second device body, and a hinge mechanism as described in any one of claims 1-6, wherein the first device body is connected to the second device body through the hinge mechanism; 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.

Images