Hinge mechanism and electronic device

Abstract

The invention discloses a hinge mechanism and electronic equipment, and belongs to the field of electronic equipment, in the hinge mechanism, a base is provided with a first arc-shaped groove and a second arc-shaped groove, a first arc-shaped connecting part of a first swing arm is rotationally connected with the first arc-shaped groove, and a second arc-shaped connecting part of a second swing arm is rotationally connected with the second arc-shaped groove; the first swing arm is provided with a first sliding block, the first synchronous piece is provided with a first sliding groove in sliding fit with the first sliding block, the second swing arm is provided with a second sliding block, the second synchronous piece is provided with a second sliding groove in sliding fit with the second sliding block, the extending direction of the first sliding groove and the extending direction of the second sliding groove are each provided with a first component, and the first components are parallel to the screen supporting direction of the base. The transmission connecting piece is installed on the base, the first synchronous piece and the second synchronous piece are both in transmission connection with the transmission connecting piece, the movement direction of the first synchronous piece and the second synchronous piece relative to the base comprises a second component, and the second component is perpendicular to the screen supporting direction of the base and the rotating axial direction of the first swing arm.

Description

Technical Field

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

[0002] Foldable screen phones are becoming increasingly popular due to their large display area and high portability. The hinge mechanism in a foldable screen phone provides the ability to fold and unfold. It typically has supports on opposite sides of the base, and these supports are connected to the base via hinge arms, allowing the supports on opposite sides of the base to rotate relative to each other, thus enabling the hinge mechanism to fold. In related technologies, hinge arms usually include two types: one for connection, that is, connecting the base and the housing of the electronic device through the hinge arm; and the other for synchronization, allowing the two housings on opposite sides of the base to rotate at the same or nearly the same angle relative to the base. Therefore, in related technologies, both types of hinge arms are required on either side of the base in the hinge mechanism, resulting in a relatively large number of hinge arms, a relatively high structural complexity, and relatively low assembly efficiency. Summary of the Invention

[0003] The purpose of this application is to provide a hinge mechanism and an electronic device to solve the problem of relatively low reliability of current hinge mechanisms.

[0004] In a first aspect, embodiments of this application provide a hinge mechanism, which includes a base, a first swing arm, a second swing arm, a first synchronizing member, a second synchronizing member, and a transmission connecting member; The base is provided with a first arc-shaped groove and a second arc-shaped groove. The first swing arm includes a first arc-shaped connecting part, and the second swing arm includes a second arc-shaped connecting part. The first arc-shaped connecting part is rotatably connected to the first arc-shaped groove, and the second arc-shaped connecting part is rotatably connected to the second arc-shaped groove. The first swing arm is provided with a first slider, the first synchronization member is provided with a first sliding groove, and the first slider is slidably engaged with the first sliding groove. The second swing arm is provided with a second slider, the second synchronization member is provided with a second sliding groove, and the second slider is slidably engaged with the second sliding groove. The extension directions of the first sliding groove and the second sliding groove both have a first component, and the first component is parallel to the screen support direction of the base. The transmission connector is mounted on the base. The first synchronizing member and the second synchronizing member are both connected to the transmission connector. The movement direction of the first synchronizing member and the second synchronizing member relative to the base includes a second component. The second component is perpendicular to the screen support direction of the base and the rotation axis of the first swing arm.

[0005] Secondly, this application discloses an electronic device comprising a housing, a display screen, and the aforementioned hinge mechanism, wherein a first bracket and a second bracket in the hinge mechanism are respectively fixedly connected to one of the housings, and the display screen is mounted on each of the housings.

[0006] This application discloses a hinge mechanism in which a first swing arm is rotatably connected to a first arcuate groove of a base via a first arcuate connecting part, and a second swing arm is rotatably connected to a second arcuate groove of a base via a second arcuate connecting part. Thus, when the first swing arm and the second swing arm are respectively connected to the housing of an electronic device, the adjacent housings have the ability to rotate relative to each other, thereby enabling the electronic device to switch between a folded state and an unfolded state.

[0007] Furthermore, in the hinge mechanism, the first slider of the first swing arm slides in engagement with the first groove of the first synchronizing member, and the second slider of the second swing arm slides in engagement with the second groove of the second synchronizing member. Simultaneously, both the first and second synchronizing members are connected to the transmission connector. The extension directions of both the first and second grooves have a first component, and the movement directions of the first and second synchronizing members relative to the base include a second component. The first component is parallel to the screen support direction of the base, and the second component is perpendicular to both the screen support direction and the rotation axis of the first swing arm. In this configuration, when the first swing arm rotates relative to the base, the first slider can move relative to the base along the first groove. During this process, the first slider can also drive the first synchronizing member to move relative to the base along the direction of the second component, allowing the first synchronizing member to correspondingly drive the second synchronizing member to move relative to the base along the aforementioned second component direction via the transmission connector. During the movement of the second synchronizing member, the second slider can be driven to rotate relative to the base via the second groove. Since the second slider and the second swing arm are fixed to each other, the second swing arm can correspondingly rotate relative to the base, creating a synchronized linkage between the first and second swing arms.

[0008] Obviously, in the hinge mechanism disclosed in the embodiments of this application, the first swing arm (and the second swing arm) itself has the function of connection and synchronization, so that the hinge mechanism does not need to be configured with an additional swing arm mechanism to provide synchronization. This makes the number of swing arms in the entire hinge mechanism relatively small, thereby simplifying the structural complexity of the hinge mechanism and improving the assembly efficiency of the hinge mechanism. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the hinge mechanism disclosed in the embodiments of this application in the unfolded state; Figures 2-7 They are Figure 1 The diagram shows cross-sectional views of the hinge mechanism at different locations. Figure 8 This is a cross-sectional schematic diagram of the hinge mechanism disclosed in the embodiments of this application in a folded state; Figure 9 This is an exploded view of the hinge mechanism disclosed in the embodiments of this application; Figure 10 This is a schematic diagram of a portion of the hinge mechanism disclosed in the embodiments of this application; Figure 11 This is an exploded view of a portion of the hinge mechanism disclosed in the embodiments of this application; Figure 12 This is a schematic diagram of the structure of the base in the hinge mechanism disclosed in the embodiments of this application; Figure 13 This is a schematic diagram of a portion of the hinge mechanism including the first swing arm disclosed in the embodiments of this application; Figure 14 This is a schematic diagram of the structure of the first synchronizing element in the hinge mechanism disclosed in the embodiments of this application; Figure 15 This is a schematic diagram of a portion of the hinge mechanism, including the cam seat, disclosed in the embodiments of this application; Figure 16 This is a schematic diagram of the structure of the electronic device disclosed in the embodiments of this application.

[0010] The attached diagram is described as follows: 1-Hinge mechanism, 2-House, 3-Display screen, 31-First part, 32-Second part, 33-Third part 100 - Base; 111 - First arc-shaped groove; 112 - Second arc-shaped groove; 121 - First guide groove; 122 - Second guide groove; 123 - Third guide groove; 124 - Fourth guide groove; 131 - First limiting groove; 133 - Third limiting groove; 134 - Fourth limiting groove; 141 - First pin; 142 - Second pin. 210 - First swing arm, 211 - First arc-shaped connecting part, 212 - First cam surface, 220 - Second swing arm, 221 - Second arc-shaped connecting part, 222 - Second cam surface, 230 - First slider, 240 - Second slider 310 - First support, 311 - Third arc-shaped groove, 320 - Second support, 321 - Fourth arc-shaped groove 410 - First synchronizing element, 411 - First mating part, 412 - First guide part, 413 - First limiting part, 414 - First slide groove, 420 - Second synchronizing element, 421 - Second mating part, 422 - Second guide part, 423 - Second limiting part, 424 - Second slide groove, 430 - Transmission connecting element 500 - Cam seat, 510 - First cam section, 520 - Second cam section, 530 - Third guide section, 540 - Third limiting section, 550 - Fourth guide section, 560 - Fourth limiting section 610 - Elastic element, 620 - Positioning pin, 710-First support plate, 711-First track groove, 720-Second support plate, 721-Second track groove, 730-Third arc-shaped connecting part, 740-Fourth arc-shaped connecting part, 750-Hinge cover, 760-Cover plate. Detailed Implementation

[0011] 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.

[0012] 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.

[0013] like Figures 1-15 As shown in the illustration, this application discloses a hinge mechanism that can be applied to electronic devices to enable the devices to fold and unfold, thereby achieving both a larger display area and greater portability. The hinge mechanism includes a base 100, a first swing arm 210, a second swing arm 220, a first synchronizer 410, a second synchronizer 420, and a transmission connector 430. Of course, the hinge mechanism may also include devices or components such as a cam mechanism to provide a damping effect, which will not be described in detail here.

[0014] As described above, the hinge mechanism disclosed in this application can be applied to electronic devices. Typically, an electronic device includes a housing, and the number of housings is at least two. Two adjacent housings can be connected by the hinge mechanism disclosed in this application, enabling relative rotation between the two housings. More specifically, in this application embodiment, the first swing arm 210 and the second swing arm 220 are respectively used to connect to two adjacent housings. To improve the connection stability of the housings, in this application embodiment, the hinge mechanism also includes a bracket, which is a device in the hinge mechanism directly connected to the housing.

[0015] like Figure 1 and Figure 2 As shown in the embodiment of this application, in the hinge mechanism, the base 100 is provided with a first arc-shaped groove 111 and a second arc-shaped groove 112. The first swing arm 210 includes a first arc-shaped connecting part 211, and the second swing arm 220 includes a second arc-shaped connecting part 221. The first arc-shaped connecting part 211 is rotatably connected to the first arc-shaped groove 111, and the second arc-shaped connecting part 221 is rotatably connected to the second arc-shaped groove 112.

[0016] The base 100 is the fundamental component of the hinge mechanism, and components such as the first swing arm 210 and the second swing arm 220 can be directly or indirectly mounted on the base 100. The base 100 can be formed of materials with relatively high structural strength, such as plastic or metal; similarly, the first swing arm 210 and the second swing arm 220 can also be formed of materials with relatively high structural strength, such as metal. Typically, both the first arc-shaped connecting portion 211 and the second arc-shaped connecting portion 221 can be tile-shaped structures, hence they can also be commonly referred to as bearing bushes. The dimensions and other parameters of the first arc-shaped connecting portion 211 and the second arc-shaped connecting portion 221 can be flexibly controlled according to actual needs, and this paper does not impose any limitations on them.

[0017] As described above, the first swing arm 210 and the second swing arm 220 are rotatably connected to the base 100 through the first arc-shaped connecting part 211 and the second arc-shaped connecting part 221, respectively. This allows the rotation axes of the first swing arm 210 and the second swing arm 220 relative to the base 100 to be located outside the base 100. More precisely, the aforementioned rotation axes are all located on the screen support side of the base 100. In this case, the maximum rotation angle of the first swing arm 210 and the second swing arm 220 relative to the base 100 can exceed 90°. Thus, when the hinge mechanism (and electronic device) is in a folded state, the first swing arm 210 and the second swing arm 220 can form an flared structure as a whole, and the flared opening faces the side where the base 100 is located. This provides a larger accommodating space for the middle part of the display screen (i.e., the folded part of the display screen) in the electronic device, preventing the display screen from developing large creases. This can improve the service life and display effect of the display screen.

[0018] In related technologies, the synchronization capability of the hinge mechanism is usually undertaken by other independent swing arm structures. In other words, the hinge mechanism of related technologies usually has two types of swing arms with different functions and structures. One type of swing arm mainly provides a connecting function, which enables two adjacent housings in the electronic device to form a connection relationship with the base 100 in the hinge mechanism. While the housings rotate relative to each other, the connecting function of the aforementioned swing arm enables the hinge mechanism to perform unfolding and folding actions. The other type of swing arm usually provides a synchronizing function, that is, it keeps the housings connected by the hinge mechanism in the electronic device in a synchronized state during the rotation relative to the base 100, so that the included angles between the two housings and the base 100 are the same or substantially the same, thereby ensuring that the symmetrical positions in the display screen are folded to the same degree, thus improving the service life of the display screen.

[0019] In the hinge mechanism disclosed in the embodiments of this application, the structures of the first swing arm 210 and the second swing arm 220 can be symmetrically identical. Of course, there may be some differences between the two structures. However, in this application, the first swing arm 210 and the second swing arm 220 have the same function, and both are used to provide the above-mentioned connection and synchronization functions.

[0020] Of course, in order to ensure that the first swing arm 210 and the second swing arm 220 can form a synchronous relationship, in this application, as described above, the hinge mechanism includes a first synchronizing member 410, a second synchronizing member 420 and a transmission connecting member 430, and there is a linkage relationship between the first swing arm 210 and the first synchronizing member 410, between the second swing arm 220 and the second synchronizing member 420, and between the first synchronizing member 410 and the second synchronizing member 420.

[0021] Among them, such as Figure 11 As shown, the first swing arm 210 is provided with a first slider 230, and the first synchronizing member 410 is provided with a first sliding groove 414. The first slider 230 is slidably engaged with the first sliding groove 414. The second swing arm 220 is provided with a second slider 240, and the second synchronizing member 420 is provided with a second sliding groove 424. The second slider 240 is slidably engaged with the second sliding groove 424. Furthermore, the extending directions of both the first sliding groove 414 and the second sliding groove 424 have a second component, which is parallel to the screen support direction of the base 100. And, as... Figure 10 As shown, the transmission connector 430 is installed on the base 100. The first synchronizing member 410 and the second synchronizing member 420 are both connected to the transmission connector 430. The movement direction of the first synchronizing member 410 and the second synchronizing member 420 relative to the base 100 includes a first component. The first component is perpendicular to the screen support direction of the base 100 and the rotation axis of the first swing arm 210.

[0022] As described above, both the first swing arm 210 and the second swing arm 220 are rotatably connected to the base 100. Therefore, during the rotation of the first swing arm 210 relative to the base 100, it can drive the first slider 230 to rotate relative to the base 100 as well, and the first slider 230 has the same motion trajectory as the first arc-shaped connecting portion 211. Based on this, in this embodiment, as described above, by making the extension directions of the first slide groove 414 and the second slide groove 424 have a first component parallel to the screen support direction of the base 100, the displacement of the first slider 230 can be decomposed into two mutually perpendicular components. The component parallel to the screen support direction can be received by the first slide groove 414, and correspondingly, the other component perpendicular to the screen support direction (and perpendicular to the rotation axis of the first swing arm 210) can act on the first synchronizing member 410, thereby causing the first synchronizing member 410 to generate a displacement along the aforementioned direction perpendicular to the screen support direction (and perpendicular to the rotation axis of the first swing arm 210). After the first synchronizing member 410 displaces along the aforementioned direction and acts on the transmission connector 430, the transmission connector 430 can correspondingly drive the second synchronizing member 420 to produce a displacement action corresponding to that of the first synchronizing member 410. As described above, the extension direction of the second slide groove 424 also has a first component parallel to the screen support direction. Therefore, under the action of the second slider 240, the movement of the second synchronizing member 420 can drive the second swing arm 220 to rotate relative to the base 100, and the rotation direction of the second swing arm 220 is opposite to the rotation direction of the first swing arm 210.

[0023] Optionally, both the first slide rail 414 and the second slide rail 424 can extend in a direction inclined relative to the aforementioned screen support direction. Of course, the extension direction of both is usually perpendicular to the rotation axis of the first swing arm 210 to reduce the design and manufacturing difficulty of the entire hinge mechanism. In this case, the inclination directions of the first slide rail 414 and the second slide rail 424 can be opposite. Of course, in other embodiments of this application, the inclination directions of the first slide rail 414 and the second slide rail 424 can also be the same. The first synchronizing member 410 and the second synchronizing member 420 can form a transmission connection with the transmission connecting member 430 through meshing or threaded engagement. Of course, if there are corresponding requirements, other transmission connection methods can also be used between the aforementioned components. More intuitively, the screen support direction can be... Figure 1 The rotation axis of the first swing arm 210 can be perpendicular to the plane of the paper. Figure 1 The direction Y in the middle, correspondingly, is perpendicular to both the screen support direction and the aforementioned rotation axis. Figure 1 In this context, the direction X can also be referred to as the width direction of the hinge mechanism.

[0024] This application discloses a hinge mechanism in which a first swing arm 210 is rotatably connected to a first arcuate groove 111 of a base 100 via a first arcuate connecting part 211, and a second swing arm 220 is rotatably connected to a second arcuate groove 112 of a base 100 via a second arcuate connecting part 221. Thus, when the first swing arm 210 and the second swing arm 220 are respectively connected to the housing of an electronic device, the adjacent housings have the ability to rotate relative to each other, thereby enabling the electronic device to switch between a folded state and an unfolded state.

[0025] Furthermore, in the hinge mechanism, the first slider 230 of the first swing arm 210 is slidably engaged with the first groove 414 of the first synchronizer 410, and the second slider 240 of the second swing arm 220 is slidably engaged with the second groove 424 of the second synchronizer 420. At the same time, the first synchronizer 410 and the second synchronizer 420 are both connected to the transmission connector 430. The extension direction of the first groove 414 and the second groove 424 both have a first component, and the movement direction of the first synchronizer 410 and the second synchronizer 420 relative to the base 100 includes a second component. The first component is parallel to the screen support direction of the base 100, and the second component is perpendicular to both the screen support direction and the rotation axis of the first swing arm 210. In this case, when the first swing arm 210 rotates relative to the base 100, the first slider 230 can move relative to the base 100 along the first slide groove 414. During this process, the first slider 230 can also drive the first synchronizing member 410 to move relative to the base 100 in the direction of the second component, so that the first synchronizing member 410 can drive the second synchronizing member 420 to move relative to the base 100 in the direction of the second component through the transmission connector 430. During the movement of the second synchronizing member 420, the second slider 240 can be driven to rotate relative to the base 100 through the second slide groove 424. Since the second slider 240 and the second swing arm 220 are fixed to each other, the second swing arm 220 can rotate relative to the base 100, so that the first swing arm 210 and the second swing arm 220 form a linkage relationship of synchronous action.

[0026] Obviously, in the hinge mechanism disclosed in the embodiments of this application, the first swing arm 210 (and the second swing arm 220) themselves have the function of connection and synchronization, so that the hinge mechanism does not need to be configured with an additional swing arm mechanism to provide synchronization. This makes the number of swing arms in the entire hinge mechanism relatively small, thereby simplifying the structural complexity of the hinge mechanism and improving the assembly efficiency of the hinge mechanism.

[0027] In the hinge mechanism disclosed in the embodiments of this application, by designing the extension direction of the first slide groove 414 and the second slide groove 424 relative to the base 100, and the moving direction of the first synchronizing member 410 and the second synchronizing member 420 relative to the base 100, it can be ensured that the rotation directions of the first swing arm 210 and the second swing arm 220 relative to the base 100 are opposite.

[0028] In one embodiment of this application, using Figure 1 Taking the shown orientation as an example, the screen support direction is perpendicular to the paper surface. Intuitively, the screen support direction is the inward and outward direction, the rotation axis of the first swing arm 210 is the up and down direction, and correspondingly, the width direction of the hinge mechanism is the left and right direction. In one embodiment of this application, the movement direction of the first synchronizer 410 and the second synchronizer 420 relative to the base 100 can be parallel to the aforementioned left and right directions. At the same time, when the first slide groove 414 extends from the outside to the inside, the first slide groove 414 can be gradually shifted to the right, and when the second slide groove 424 extends from the outside to the inside, the second slide groove 424 can be gradually shifted to the left. That is, the extension directions of the first slide groove 414 and the second slide groove 424 both have a first component (i.e., the inward and outward direction), and both are inclined relative to the inward and outward directions, and the inclination directions are opposite.

[0029] Meanwhile, the first synchronizing element 410 and the second synchronizing element 420 can be respectively disposed on the upper and lower sides of the transmission connector 430, and the first synchronizing element 410 and the second synchronizing element 420 can be connected to the transmission connector 430 through meshing or threaded engagement, so that the transmission connector 430 is rotatably connected to the base 100. In one embodiment of this application, the first synchronizing element 410 and the second synchronizing element 420 may include a worm gear, and the transmission connector 430 may include a worm wheel. In order to reduce the installation difficulty of the first synchronizing element 410, the second synchronizing element 420 and the transmission connector 430, and to improve the transmission stability between the components, such as Figure 10 As shown, the transmission connector 430 may include gears, such as... Figure 4 As shown, the transmission connector 430 can be rotatably mounted on the base 100 via a pin-type structural component. Correspondingly, both the first synchronizing component 410 and the second synchronizing component 420 can include racks.

[0030] Based on the above structure, when the first swing arm 210 rotates clockwise relative to the base 100, the first slider 230 moves along the lower left of the first slide groove 414. During this process, the first slider 230 can drive the first synchronizing member 410 to move to the left. Correspondingly, when the first synchronizing member 410 moves to the left relative to the base 100, the transmission connecting member 430 rotates counterclockwise and drives the second synchronizing member 420 to move to the right. When the second synchronizing member 420 moves to the right, the second slider 240, which is slidably installed in the second slide groove 424, can move upward along the second slide groove 424. By superimposing the movement trajectory of the second slide groove 424 (i.e., the second synchronizing member 420), the combined movement of the second swing arm 220 rotating counterclockwise can be synthesized.

[0031] Of course, based on the technical logic of the structure and motion process given in the above embodiments of this application, those skilled in the art can also adjust the cooperation method and relative position between the devices accordingly. For example, the first synchronizing member 410 and the second synchronizing member 420 can be stacked on the same side of the transmission connector 430 and are both connected to the same position (or area) of the transmission connector 430; or, the extending directions of the first slide groove 414 and the second slide groove 424 can be parallel to each other, etc., which will not be listed here.

[0032] To reduce the manufacturing difficulty of the hinge mechanism and improve the operational accuracy and reliability of each component within it, in one embodiment of this application, the first synchronizing element 410 and the second synchronizing element 420 are respectively disposed on opposite sides of the transmission connector 430, with the first synchronizing element 410 and the second synchronizing element 420 moving in opposite directions relative to the base 100. Furthermore, the moving directions of the first synchronizing element 410 and the second synchronizing element 420 relative to the base 100 are both perpendicular to the rotation axis of the first swing arm 210 and the aforementioned screen support direction. In other words, in this embodiment, both the first synchronizing element 410 and the second synchronizing element 420 move relative to the base 100 along the width direction of the hinge mechanism, and their moving directions relative to the transmission connector 430 are opposite during this movement.

[0033] Furthermore, in this embodiment, the extension directions of the first slide groove 414 and the second slide groove 424 can both be parallel to the aforementioned screen support direction. This can minimize the movement range of the first synchronization member 410 and the second synchronization member 420, and further improve the motion accuracy between the components in the hinge mechanism. Additionally, both the first slide groove 414 and the second slide groove 424 can be rectangular grooves to reduce their manufacturing difficulty. In this case, both the first slider 230 and the second slider 240 can be cubic structures. To further improve the smoothness of sliding between the corresponding mating components, in one embodiment of this application, both the first slider 230 and the second slider 240 are cylindrical structures. This allows for a wired connection between the first slider 230 and the first slide groove 414, and between the second slider 240 and the second slide groove 424, which can minimize the possibility of jamming between the first slider 230 and the second slider 240.

[0034] As described above, in the hinge mechanism disclosed in this application embodiment, when the first swing arm 210 rotates relative to the base 100, the first synchronizing member 410 can move relative to the base 100. In order to improve the movement accuracy of the first synchronizing member 410 and thus make the reliability of the hinge mechanism relatively high, in this application embodiment, a corresponding limiting structure can also be set for the movement trajectory of the first synchronizing member 410. For example, the first synchronizing member 410 can be integrally embedded in the base 100, that is, the base 100 can be provided with a receiving groove, and the first synchronizing member 410 can be installed in the receiving groove so that the groove wall of the receiving groove provides a limiting effect on the movement path of the first synchronizing member 410, ensuring that the movement accuracy of the first synchronizing member 410 is relatively high.

[0035] In order to make the assembly difficulty of the first synchronizing member 410 and the transmission connector 430 relatively low, and to make the size of each component in the hinge mechanism relatively small, so as to facilitate the development of the hinge mechanism and the entire electronic device towards thinner and lighter design, in one embodiment of this application, the first synchronizing member 410 may include a first mating part 411 and a first guiding part 412, wherein the first mating part 411 is connected to the transmission connector 430 in a transmission manner. As mentioned above, the first synchronizing member 410 may include a rack. In this case, the first mating part 411 may include a rack, which is used to engage with the transmission connector 430.

[0036] Meanwhile, in this application, the first guide portion 412 is connected to one side of the first mating portion 411, and as... Figure 3 and Figure 12As shown, the base 100 is provided with a first guide groove 121. During the assembly of the hinge mechanism, at least a portion of the first guide part 412 extends into the first guide groove 121, and the two slide in the direction of movement of the first synchronizer 410. In this case, the first guide part 412 can provide guidance for the movement of the entire first synchronizer 410, thereby ensuring that the relative movement accuracy between the first synchronizer 410 and the base 100 is relatively high.

[0037] Optionally, the first guide portion 412 may include a protrusion structure, and the protrusion structure and the first guide groove 121 are in a surface mating relationship. The first guide portion 412 and the first mating portion 411 are fixedly connected. Optionally, the first guide portion 412 and the first mating portion 411 are integrally formed. Accordingly, during the assembly of the hinge mechanism, the protrusion structure is inserted into the first guide groove 121, so that the first synchronizing member 410 and the base 100 can be assembled. In addition, when the first synchronizing member 410 adopts the structure in the embodiment of this application, the first sliding groove 414 can be formed on both the first mating portion 411 and the first guide portion 412. In other embodiments of this application, the first sliding groove 414 can be formed only on the first mating portion 411, which is not limited herein.

[0038] In the above embodiments, the first guide portion 412 can be installed in the first guide groove 121 by plugging. In one embodiment of this application, the first guide portion 412 can be a stepped protrusion structure. After the first guide portion 412 is installed in the first guide groove 121, fillers are respectively provided on both sides of the protrusion structure in the groove of the first guide groove 121. In the depth direction of the first guide groove 121 (i.e., the installation direction of the first guide portion 412), the fillers and the stepped protrusion structure form a limiting fit relationship to prevent the first guide portion 412 from uncontrollably coming out of the first guide groove 121.

[0039] To reduce the assembly difficulty between the first synchronizing element 410 and the first guide groove 121, in another embodiment of this application, such as Figure 3 As shown, the base 100 can also be provided with a first limiting groove 131, wherein the first limiting groove 131 communicates with the first guide groove 121, and the first limiting groove 131 is located on the side of the first guide groove 121 away from the screen support side of the base 100; at the same time, as Figure 14As shown, the first synchronizing member 410 also includes a first limiting part 413. The first limiting part 413 is connected to the side of the first guide part 412 away from the first mating part 411, and the first limiting part 413 extends into the first limiting groove 131. After the first synchronizing member 410 and the base 100 are assembled, the first limiting part 413 and the first limiting groove 131 are limited and engaged in the screen support direction of the base 100, thereby preventing the first synchronizing member 410 from uncontrollably coming out of the first guide groove 121.

[0040] To put it more intuitively, still based on Figure 1 Taking the orientation shown in the figure as an example, the depth direction of the first guide groove 121 is inward and outward, the extension direction of the first guide groove 121 is inward and outward, and the extension direction of the first guide groove 121 is left and right. The first limiting groove 131 is located inside the first guide groove 121, and the extension direction of the first limiting groove 131 is up and down. For example, the first limiting groove 131 can extend from one side of the first guide groove 121 to the other side of the first guide groove 121, and the first limiting groove 131 extends beyond the aforementioned other side of the groove wall and continues to extend for a distance to provide a accommodating space for the first limiting part 413, thereby ensuring that the first limiting part 413 can form a limiting fit relationship with the structure in the base 100 used to form the first guide groove 121 in the inward and outward directions. Of course, this example is only listed for ease of understanding. In actual applications, parameters such as the extension direction of the first limiting groove 131 can be flexibly determined according to the actual situation such as the structure of the base 100. It is only necessary to ensure that the first limiting part 413 can provide a limiting function parallel to the aforementioned screen support direction for the entire first synchronization member 410.

[0041] When adopting the above embodiments of this application, the first limiting part 413 and the first guiding part 412 can be fixedly connected in a detachable manner, so that the first limiting part 413 and the first guiding part 412 are respectively installed on the base 100 from opposite sides along the aforementioned screen support direction.

[0042] To further reduce the processing difficulty of the first synchronization component 410 and the assembly difficulty between the first synchronization component 410 and the base 100, in another embodiment of this application, the first guide groove 121 can be an irregular structure, and the size (or area) of the end position in the groove of the first guide groove 121 can be relatively large, so as to have the ability to avoid the first limiting part 413. This allows the first limiting part 413 to be installed in the first guide groove 121 through the aforementioned end position in the groove of the first guide groove 121. After the first limiting part 413 is installed in the first limiting groove 131, the first synchronization component 410 is controlled to move a certain distance along the first guide groove 121, so that the positions of the first limiting part 413 and the aforementioned end position in the groove of the first guide groove 121 are staggered, ensuring that the first limiting part 413 and the first limiting groove 131 can form a limiting engagement relationship in the screen support direction.

[0043] In this case, the first guide portion 412 and the first limiting portion 413 can be formed integrally, thereby reducing the processing and assembly difficulty of the first synchronizing member 410. Furthermore, when using the above technical solution, in order to prevent the first synchronizing member 410 from moving along the first guide groove 121 to the aforementioned end position, the extension dimension of the first guide groove 121 and the range of motion of the first synchronizing member 410 can be designed and limited to ensure that the first synchronizing member 410 will not move to the aforementioned end position of the first limiting groove 131 when the hinge mechanism is working.

[0044] As described above, the first synchronizing member 410 may include a first mating part 411, a first guiding part 412, and a first limiting part 413, and the base 100 may be provided with a corresponding first guiding groove 121 and a first limiting groove 131, so that the first guiding groove 121 provides guidance and limiting function for the reciprocating movement of the first synchronizing member 410, and the first limiting groove 131 restricts the first synchronizing member 410 from uncontrolled separation from the base 100.

[0045] Based on this, in order to improve the reciprocating movement accuracy of the second synchronizing member 420, the second synchronizing member 420 can also include a second mating part 421 and a second guide part 422, wherein the second mating part 421 is used for transmission connection with the transmission connector 430. Optionally, the second mating part 421 may include a rack, and the base 100 may be provided with a second guide groove 122, which extends along the moving direction of the second synchronizing member 420 relative to the base 100. At least a portion of the second limiting member can be installed in the second guide groove 122, thereby using the second guide part 422 to provide guidance and limiting function for the reciprocating movement of the second synchronizing member 420. Alternatively, the second synchronizing member 420 may also include a second limiting part 423, and the base 100 is provided with a second limiting groove communicating with the second guide groove 122. The second limiting part 423 and the second limiting groove mutually limit each other in the screen support direction.

[0046] Typically, the structure of the second synchronization element 420 corresponds to the structure of the first synchronization element 410. For example, their structures are symmetrical. Therefore, based on the cooperation relationship between the first synchronization element 410 and the first base 100, the cooperation relationship between the second synchronization element 420 and the base 100 can be designed accordingly. Considering the brevity of the text, it will not be described again here.

[0047] To improve the unfolding and folding feel of the hinge mechanism and to enable the first swing arm 210 and the second swing arm 220 to hover, in this embodiment, the hinge mechanism may also include a damping mechanism. More specifically, as... Figure 11 As shown, the hinge mechanism also includes a first cam portion 510, a second cam portion 520, and an elastic element 610. In the rotational axis of the first rocker arm 210, both the first cam portion 510 and the second cam portion 520 are movably engaged with the base 100, and both are elastically engaged with the elastic element 610. Simultaneously, in the rotational direction of the first rocker arm 210, both the first cam portion 510 and the second cam portion 520 are relatively fixed to the base 100. More specifically, both the first cam portion 510 and the second cam portion 520 are located in a cam structure, or in other words, both have cam surfaces. In this case, both the first cam portion 510 and the second cam portion 520 possess the ability to convert rotational driving action into linear driving action.

[0048] And, as Figure 11 and Figure 13 As shown, the first arc-shaped connecting part 211 is provided with a first cam surface 212, and the second arc-shaped connecting part 221 is provided with a second cam surface 222. During the assembly of the hinge mechanism, the first cam surface 212 engages with the cam of the first cam part 510, and the second cam surface 222 engages with the cam of the second cam part 520.

[0049] When the first swing arm 210 rotates relative to the base 100, the first cam surface 212 can rotate relative to the first cam portion 510. Since both the first cam portion 510 and the second cam portion 520 are fixedly arranged relative to the base 100 in the rotation direction of the first swing arm 210, the first cam surface 212 can drive the first cam portion 510 to move relative to the base 100 along the aforementioned rotation axis, thereby pressing the elastic element 610 on the other side of the first cam portion 510 to generate a damping effect in the hinge mechanism. At the same time, the pressing action of the elastic element 610 can make the first cam portion 510 and the first cam surface 212 form a stable state. In this case, if the first swing arm 210 (or the housing of the electronic device) is no longer subjected to other external forces (such as the driving force provided by the user), the first swing arm 210 can remain relatively stationary with the base 100, thereby keeping the hinge mechanism and the electronic device stably in a suspended state.

[0050] Optionally, both the first cam portion 510 and the second cam portion 520 can be connected to the base 100 in a relatively fixed relationship with the first rocker arm 210 in the rotation direction by means of a key connection. For example, the hinge mechanism may include two connecting shafts, and at least part of the outer peripheral surface of each connecting shaft can be a rectangular structure. At the same time, both the first cam portion 510 and the second cam portion 520 can be provided with shaft holes, and the inner wall of the shaft hole is a rectangular structure corresponding to the connecting shaft. In this case, when the first cam portion 510 forms a shaft hole fit relationship with the aforementioned connecting shaft, the first cam portion 510 and the connecting shaft can form a relatively fixed relationship with the first rocker arm 210 in the rotation direction, and ensure that the first cam portion 510 and the connecting shaft still have the ability to move relative to each other in the rotation axis. Correspondingly, the second cam portion 520 can also form the above-mentioned fit relationship with the other connecting shaft. In addition, the parameters of the first cam portion 510, the second cam portion 520, the first cam surface 212 and the second cam surface 222 can be flexibly designed according to the actual situation, and ensure that the first cam portion 510 and the first cam surface 212, as well as the second cam portion 520 and the second cam surface 222, form a corresponding cam engagement relationship.

[0051] To further reduce the number of components in the hinge mechanism and simplify the assembly of the first cam portion 510 and the second cam portion 520, in another embodiment of this application, the first cam portion 510 and the second cam portion 520 can be relatively fixed and mounted together on the base 100. Specifically, the hinge mechanism includes a cam seat 500, which includes the aforementioned first cam portion 510 and second cam portion 520, and the first cam portion 510 and the second cam portion 520 are fixedly connected. Of course, to ensure that the entire cam seat 500 can still move relative to the base 100 along the rotational axis and is relatively fixed in the rotational direction of the first rocker arm 210, in this embodiment of the application, the cam seat 500 further includes a third guide portion 530, which is fixedly connected to the side of the first cam portion 510 away from the screen support side of the base 100; correspondingly, the base 100 also provides a third guide groove 123, and the third guide portion 530 and the third guide groove 123 slide in cooperation along the rotational axis.

[0052] Optionally, the third guide portion 530 can be located between the first cam portion 510 and the second cam portion 520, and the third guide portion 530 is fixedly connected to the side of the first cam portion 510 and the second cam portion 520 facing the base 100. Of course, the aforementioned three components can be formed integrally to reduce processing difficulty and improve the connection reliability between the components. Meanwhile, the surface of the first cam portion 510 facing the first cam surface 212 and the surface of the second cam portion 520 facing the second cam surface 222 can both be cam surfaces. Correspondingly, the third limiting groove 133 extends along the rotation axis, so that after the third guide portion 530 is installed in the third limiting groove 133, the third guide portion 530 can provide a guiding function for the entire cam seat 500.

[0053] Furthermore, in the above embodiments of this application, the first cam portion 510 and the second cam portion 520 do not need to be cylindrical structures. Both can be plate-shaped structures to ensure that the cam seat 500 can be assembled with the base 100. Of course, in order to improve the assembly stability between the cam seat 500 and the base 100, a positioning hole can be provided on the side of the cam seat 500 away from the first cam surface 212, and a corresponding positioning pin or other structure can be formed on the base 100. By ensuring that the positioning pin is always inserted into the positioning hole, the cam seat 500 can be provided with good guidance and limiting function.

[0054] In another embodiment of this application, such as Figure 5 As shown, the base 100 may also be provided with a third limiting groove 133, which communicates with the third guide groove 123, and the third limiting groove 133 is located on the side of the third guide groove 123 away from the screen support side of the base 100; at the same time, in the embodiments of this application, as Figure 15As shown, the cam seat 500 may also include a third limiting part 540. The third limiting part 540 is connected to the side of the third guide part 530 away from the first cam part 510, and the third limiting part 540 extends into the third limiting groove 133. After the cam seat 500 and the base 100 are assembled, the third limiting part 540 and the third limiting groove 133 are matched in the screen support direction of the base 100, thereby restricting the cam seat 500 and the base 100 from separating from each other uncontrollably. In this case, the above-mentioned positioning hole does not need to be provided on the cam seat 500, and the positioning pin does not need to be provided at the corresponding position on the base 100.

[0055] The structural and positional relationship between the third limiting groove 133 and the third guide groove 123 can be referred to the description of the first limiting groove 131 and the first guide groove 121 in the above embodiments, and will not be repeated here. In addition, in order to further improve the stability of the cam seat 500 and the base 100 in the rotational axis, in an optional embodiment of this application, the cam seat 500 may further include a fourth limiting part 560 and a fourth guide part 550. The third guide part 530 is connected to the side of the third cam portion facing the base 100, and the fourth guide part 550 is connected to the side of the fourth cam portion facing the base 100. Correspondingly, the third limiting part 540 is connected to the side of the third guide part 530 away from the third cam portion, and the fourth limiting part 560 is connected to the side of the fourth guide part 550 away from the fourth cam portion. Correspondingly, the base 100 is also provided with a fourth guide groove 124 and a fourth limiting groove 134 that are interconnected. The fourth guide part 550 is installed in the fourth guide groove 124, and the two slide in the rotation axis. The fourth limiting part 560 is installed in the fourth limiting groove 134, and the two limit in the aforementioned screen support direction.

[0056] As described above, the first cam portion 510 and the second cam portion 520 are provided with an elastic element 610 on the side opposite to the first cam surface 212 and the second cam surface 222. The elastic element 610 can be formed of a material with elasticity, such as rubber. In another embodiment of this application, the elastic element 610 can also be a compression spring. When the cam seat 500 includes the first cam portion 510 and the second cam portion 520, there can be one elastic element 610, and the elastic element 610 can abut against the cam seat 500. Of course, there can also be multiple elastic elements 610, and one end of the first cam portion 510 and the second cam portion 520 can be provided with an elastic element 610. Of course, when the hinge mechanism includes the cam seat 500, there can also be multiple elastic elements 610 to improve the damping effect.

[0057] To improve the stability of the elastic element 610, in an optional embodiment of this application, the base 100, the first cam portion 510, and the second cam portion 520 may all be provided with positioning posts 620, and each end of the elastic element 610 may be sleeved outside the corresponding positioning post 620. Of course, if there is only one elastic element 610, the base 100 and the cam seat 500 may both be provided with the aforementioned positioning posts 620, and the opposite ends of the elastic element 610 may be sleeved on the positioning posts 620 on the base 100 and the cam seat 500, respectively.

[0058] As described above, the hinge mechanism is connected to the housing in the electronic device via the first swing arm 210 and the second swing arm 220. In order to improve the connection stability between the hinge mechanism and the housing, in this embodiment, the hinge mechanism includes a first bracket 310 and a second bracket 320. The first bracket 310 and the second bracket 320 are respectively disposed on opposite sides of the base 100, so that the first bracket 310 and the second bracket 320 are fixedly connected to the two housings respectively, so that the first swing arm 210 and the second swing arm 220 rotate relative to the base 100 during the relative rotation of the housings.

[0059] Meanwhile, in this application, the end of the first swing arm 210 facing away from the first arc-shaped connecting portion 211 is fixedly connected to the first bracket 310, and the end of the second swing arm 220 facing away from the second arc-shaped connecting portion 221 is fixedly connected to the second bracket 320. Optionally, as follows... Figure 7 As shown, the first swing arm 210 and the first bracket 310, as well as the second swing arm 220 and the second bracket 320, can be fixedly connected by screws. That is, in this embodiment, the rotation angle of the first bracket 310 and the second bracket 320 relative to the base 100 is basically 90°. In this case, even when the hinge mechanism is in the folded state, the portion of the first arc-shaped connecting part 211 located in the first arc-shaped groove 111, and the portion of the first arc-shaped connecting part 211 located in the first arc-shaped groove 111, are still relatively large. In this case, the stability between the first swing arm 210 and the second swing arm 220 and the base 100 can be relatively high, and the probability of jamming between the first swing arm 210 and the second swing arm 220 and the base 100 can be greatly reduced.

[0060] As described above, the first bracket 310 is connected to one end of the first swing arm 210 that is away from the first arc-shaped connecting part 211, and the first bracket 310 is connected to the housing. The housing can provide support for the display screen. In order to ensure relatively high overall support for the display screen, in this application, the hinge mechanism also includes a first support plate 710 and a second support plate 720. The first support plate 710 and the second support plate 720 are respectively disposed on opposite sides of the base 100, thereby using the first support plate 710 and the second support plate 720 to provide support for the part of the display screen located between two adjacent housings.

[0061] As described above, in the technical solution disclosed in this application embodiment, the rotation angle of the first bracket 310 and the second bracket 320 relative to the base 100 is basically 90°. Based on this, in order to increase the size of the space used by the hinge mechanism to accommodate the folded and deformed part of the display screen, in this application embodiment, such as Figure 8 As shown, the first support plate 710 can be rotatably connected to the first bracket 310, and the second support plate 720 can be rotatably connected to the second bracket 320. The rotation angle of the first support plate 710 and the second support plate 720 relative to the base 100 is greater than 90°. Thus, when the hinge mechanism is in the folded state, the first support plate 710 and the second support plate 720 can form a flared structure with the flared opening facing the base 100, thereby reducing the degree of folding of the display screen and improving the service life and display effect of the display screen.

[0062] More specifically, in the embodiments of this application, one of the base 100 and the first support plate 710 may be provided with a first pin 141 and the other with a first track groove 711; one of the base 100 and the second support plate 720 may be provided with a second pin 142 and the other with a second track groove 721; the first pin 141 is installed in the first track groove 711 and the second pin 142 is installed in the second track groove 721. Based on this, during the switching process between the unfolded state and the folded state of the hinge mechanism, the first support plate 710 rotates relative to the first bracket 310, and the first pin 141 moves in the first track groove 711; the second support plate 720 rotates relative to the second bracket 320, and the second pin 142 moves in the second track groove 721, so that the rotation angle of the first support plate 710 relative to the base 100 is greater than the rotation angle of the first bracket 310 relative to the base 100, and the rotation angle of the second support plate 720 relative to the base 100 is greater than the rotation angle of the second bracket 320 relative to the base 100.

[0063] Optionally, by designing the extension paths of the first track groove 711 and the second track groove 721, it can be ensured that during the rotation of the first support plate 710 with the first bracket 310 relative to the base 100, the first support plate 710 can also rotate relative to the first bracket 310, thereby making the rotation angle of the first support plate 710 relative to the base 100 greater than the rotation angle of the first bracket 310 relative to the base 100. Similarly, during the rotation of the second support plate 720 with the second bracket 320 relative to the base 100, it can be ensured that the second support plate 720 can also rotate relative to the second bracket 320, thereby making the rotation angle of the second support plate 720 relative to the base 100 greater than the rotation angle of the second bracket 320 relative to the base 100.

[0064] To improve the operational stability of the first support plate 710 and the second support plate 720, in the embodiments of this application, such as Figure 6 and Figure 12 As shown, along the rotation axis, the base 100 can be provided with a first pin 141 and a second pin 142 on opposite sides, and the first support plate 710 can be provided with a first track groove 711 on opposite sides, and the second support plate 720 can be provided with a second track groove 721 on opposite sides. In this case, the opposite ends of the first support plate 710 and the second support plate 720 can form a linkage relationship with the base 100, which can also improve the movement accuracy of the first support plate 710 and the second support plate 720. In addition, when multiple hinge mechanisms form a hinge assembly, the first pin 141 and the second pin 142 can be provided only on the hinge mechanisms located at both ends along the aforementioned rotation axis.

[0065] Of course, when adopting the above technical solution, a rotational connection is also required between the first support plate 710 and the first bracket 310, and between the second support plate 720 and the second bracket 320. Optionally, the corresponding two can form a rotational fit relationship through a shaft hole type connection structure. In order to minimize the size of the aforementioned components while keeping the rotation angle between the first support plate 710 and the first bracket 310, and between the second support plate 720 and the second bracket 320 unchanged, so as to facilitate the development of the hinge mechanism towards thinner and lighter design, in another embodiment of this application, one of the first bracket 310 and the first support plate 710 can be provided with a third arc-shaped connecting portion 730, and the other can be provided with a third arc-shaped groove 311, with the third arc-shaped connecting portion 730 and the third arc-shaped groove 311 rotatably connected; correspondingly, one of the second bracket 320 and the second support plate 720 can be provided with a fourth arc-shaped connecting portion 740, and the other can be provided with a fourth arc-shaped groove 321, with the fourth arc-shaped connecting portion 740 and the fourth arc-shaped groove 321 rotatably connected.

[0066] Optionally, both the third arc-shaped connecting portion 730 and the fourth arc-shaped connecting portion 740 can be bush-shaped structures. The size and shape of the two correspond to the size and shape of the third arc-shaped groove 311 and the fourth arc-shaped groove 321, respectively, so as to ensure that during the rotation of the first bracket 310 and the second bracket 320 relative to the base 100, the third arc-shaped connecting portion 730 and the fourth arc-shaped connecting portion 740 can rotate and cooperate with the third arc-shaped groove 311 and the fourth arc-shaped groove 321, respectively.

[0067] To improve the support effect of the portion of the display screen opposite to the base 100, in this embodiment of the application, such as... Figure 9 As shown, the hinge mechanism may further include a hinge cover 750 and a cover plate 760. The base 100 is fixedly mounted on the hinge cover 750, and the cover plate 760 is fixedly mounted on the side of the base 100 facing away from the hinge cover 750. In a plane perpendicular to the screen support direction of the base 100, at least a portion of the first arc-shaped connecting portion 211 and the second arc-shaped connecting portion 221 lies within the projection of the cover plate 760. In this configuration, the cover plate 760 provides a covering effect for the first arc-shaped connecting portion 211 and the second arc-shaped connecting portion 221, preventing the display screen from directly contacting or even pressing against them. Simultaneously, the cover plate 760 provides support for the portion of the display screen facing the base 100, ensuring relatively good support for different areas of the display screen. Furthermore, the hinge cover 750 provides a covering and protection effect for the side of the base 100 facing away from its screen support side, ensuring relatively high reliability of the hinge mechanism.

[0068] Based on the hinge mechanism disclosed in any of the above embodiments, such as Figure 16 As shown in the figure, this application also discloses an electronic device, which is a foldable electronic device, that is, the electronic device has a folded state and an unfolded state, and can switch between the folded state and the unfolded state. As shown in the figure, the electronic device includes a housing 2, a display screen 3, and any of the aforementioned hinge mechanisms 1, wherein any two housings 2 can be rotatably connected by the hinge mechanism 1, and the display screen 3 can be disposed on one side surface of the hinge mechanism 1 and the housing 2 to form a foldable electronic device with folding capability.

[0069] In addition, the display screen 3 can be a flexible screen as a whole, or the display screen 3 can include a first display area 31, a second display area 32 and a third display area 33, wherein the third display area 33 is connected between the first display area 31 and the second display area 32, and the first display area 31 and the second display area 32 are respectively supported on two housings 2, which can be flexible structures or rigid structures. The third display area 33 is opposite to the hinge mechanism 1, and the third display area 33 is a flexible structure.

[0070] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0071] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the above-described embodiments. The above-described embodiments 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, It includes a base, a first swing arm, a second swing arm, a first synchronizer, a second synchronizer, and a transmission connector; The base is provided with a first arc-shaped groove and a second arc-shaped groove. The first swing arm includes a first arc-shaped connecting part, and the second swing arm includes a second arc-shaped connecting part. The first arc-shaped connecting part is rotatably connected to the first arc-shaped groove, and the second arc-shaped connecting part is rotatably connected to the second arc-shaped groove. The first swing arm is provided with a first slider, the first synchronization member is provided with a first sliding groove, and the first slider is slidably engaged with the first sliding groove. The second swing arm is provided with a second slider, the second synchronization member is provided with a second sliding groove, and the second slider is slidably engaged with the second sliding groove. The extension directions of the first sliding groove and the second sliding groove both have a first component, and the first component is parallel to the screen support direction of the base. The transmission connector is mounted on the base. The first synchronizing member and the second synchronizing member are both connected to the transmission connector. The movement direction of the first synchronizing member and the second synchronizing member relative to the base includes a second component. The second component is perpendicular to the screen support direction of the base and the rotation axis of the first swing arm.

2. The hinge mechanism according to claim 1, characterized in that, The first synchronizing member includes a first mating part and a first guiding part. The first mating part is connected to the transmission connecting member. The first guiding part is connected to one side of the first mating part. The base is provided with a first guiding groove. At least a portion of the first guiding part extends into the first guiding groove. The two are slidably mated in the moving direction of the first synchronizing member.

3. The hinge mechanism according to claim 2, characterized in that, The base is provided with a first limiting groove, which is connected to the first guide groove, and the first limiting groove is located on the side of the first guide groove away from the screen support side of the base. The first synchronization component further includes a first limiting part, which is connected to the side of the first guide part away from the first mating part, and the first limiting part extends into the first limiting groove. In the screen support direction of the base, the first limiting part and the first limiting groove are mutually limiting and mating.

4. The hinge mechanism according to claim 1, characterized in that, The hinge mechanism further includes a first cam portion, a second cam portion, and an elastic element. In the rotational axis of the first swing arm, both the first cam portion and the second cam portion are movably engaged with the base, and both the first cam portion and the second cam portion are elastically engaged with the elastic element. In the rotational direction of the first swing arm, both the first cam portion and the second cam portion are relatively fixed to the base. The first arc-shaped connecting part is provided with a first cam surface, and the second arc-shaped connecting part is provided with a second cam surface. The first cam surface engages with the cam of the first cam part, and the second cam surface engages with the cam of the second cam part.

5. The hinge mechanism according to claim 4, characterized in that, The hinge mechanism includes a cam seat, which includes a third guide portion, a first cam portion, and a second cam portion. The first cam portion and the second cam portion are fixedly connected, and the third guide portion is fixedly connected to the side of the first cam portion away from the screen support side of the base. The base is also provided with a third guide groove, and the third guide part slides in cooperation with the third guide groove along the rotation axis.

6. The hinge mechanism according to claim 5, characterized in that, The base is provided with a third limiting groove, which is connected to the third guide groove, and the third limiting groove is located on the side of the third guide groove away from the screen support side of the base. The cam seat also includes a third limiting part, which is connected to the side of the third guide part away from the first cam part, and the third limiting part extends into the third limiting groove. In the screen support direction of the base, the third limiting part and the third limiting groove are in a limiting engagement.

7. The hinge mechanism according to claim 1, characterized in that, The hinge mechanism includes a first bracket and a second bracket, which are respectively disposed on opposite sides of the base. The end of the first swing arm that is away from the first arc-shaped connecting part is fixedly connected to the first bracket, and the end of the second swing arm that is away from the second arc-shaped connecting part is fixedly connected to the second bracket.

8. The hinge mechanism according to claim 7, characterized in that, The hinge mechanism further includes a first support plate and a second support plate, which are respectively disposed on opposite sides of the base. The first support plate is rotatably connected to the first bracket, and the second support plate is rotatably connected to the second bracket. One of the base and the first support plate is provided with a first pin, and the other is provided with a first track groove. One of the base and the second support plate is provided with a second pin, and the other is provided with a second track groove. The first pin is installed in the first track groove, and the second pin is installed in the second track groove. During the switching process between the unfolded and folded states of the hinge mechanism, the first support plate rotates relative to the first bracket, and the first pin moves in the first track groove; the second support plate rotates relative to the second bracket, and the second pin moves in the second track groove, so that the rotation angle of the first support plate relative to the base is greater than the rotation angle of the first bracket relative to the base, and the rotation angle of the second support plate relative to the base is greater than the rotation angle of the second bracket relative to the base.

9. The hinge mechanism according to claim 8, characterized in that, One of the first bracket and the first support plate is provided with a third arc-shaped connecting part, and the other is provided with a third arc-shaped groove. The third arc-shaped connecting part is rotatably connected to the third arc-shaped groove. One of the second bracket and the second support plate is provided with a fourth arc-shaped connecting part, and the other is provided with a fourth arc-shaped groove. The fourth arc-shaped connecting part and the fourth arc-shaped groove are rotatably connected.

10. An electronic device, characterized in that, The device includes a housing, a display screen, and a hinge mechanism as described in any one of claims 1-9, wherein a first bracket and a second bracket in the hinge mechanism are respectively fixedly connected to one of the housings, and the display screen is mounted on each of the housings.

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