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, first swing arms and second swing arms are arranged on the two opposite sides of a base, one end of any first swing arm and one end of any second swing arm are rotationally connected with the base, and the second swing arms located on the two opposite sides of the base rotate synchronously; the other end of the first swing arm is rotationally connected with the shell connecting piece, the side edge of the side, away from the base, of the supporting plate is rotationally connected with the shell connecting piece, and the other end of the second swing arm is slidably connected with the shell connecting piece. The side, facing the supporting plate, of the second swing arm is provided with a first supporting boss and a second supporting boss, the side, facing the second swing arm, of the supporting plate is provided with a third supporting boss, in the extending direction of the second swing arm, the third supporting boss is supported on the first supporting boss, and the side edge, close to the base, of the supporting plate is supported on the second supporting boss. The first supporting boss and the second supporting boss are used for limiting the supporting plate to move in the direction close to the base.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic equipment, and specifically relates to a hinge mechanism and an electronic equipment. Background Art

[0002] Influenced by user demand, foldable electronic devices are increasingly favored by consumers for their large display area and strong portability. Generally, a foldable electronic device includes a display module, which includes a flexible screen, the center of which can be bent and deformed to adapt to the deformation and folding process of the electronic device.

[0003] However, if Figure 1 and Figure 2 As shown, when a foldable electronic device falls while in a folded state, when the side where the hinge cover of the electronic device is located collides with the ground first, the two shells of the electronic device and the door panels on both sides of the base in the hinge mechanism will move towards the hinge cover relative to the base due to inertia, which causes the space between the door panel and the base originally used to accommodate the deformed part of the display screen to become smaller, thereby causing the display screen to be squeezed, making the display screen vulnerable to damage. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a hinge mechanism and an electronic device to solve the problem that when a current foldable electronic device falls while in a folded state, the shell and the door panel are prone to move relative to the base in a direction closer to the hinge cover, resulting in a smaller space for accommodating the deformed part of the display screen, thereby causing the display screen to be squeezed and damaged.

[0005] In a first aspect, an embodiment of the present application discloses a hinge mechanism, which includes a base, a first swing arm, a second swing arm, a housing connector and a support plate, wherein: The first swing arm and the second swing arm are provided on opposite sides of the base, and one end of each of the first swing arm and the second swing arm is rotatably connected to the base, and the second swing arms located on opposite sides of the base rotate synchronously; the other end of the first swing arm is rotatably connected to the shell connecting piece, the side edge of the support plate away from the base is rotatably connected to the shell connecting piece, and the other end of the second swing arm is slidably connected to the shell connecting piece; The second swing arm is provided with a first supporting boss and a second supporting boss on a side facing the support plate, and the support plate is provided with a third supporting boss on a side facing the second swing arm. In the extending direction of the second swing arm, the third supporting boss is supported on the first supporting boss, and a side edge of the support plate close to the base is supported on the second supporting boss. The first supporting boss and the second supporting boss are used to limit the movement of the support plate toward the direction close to the base.

[0006] In a second aspect, an embodiment of the present application discloses an electronic device, which includes an electronic device, characterized in that it includes a shell, a display screen and the above-mentioned hinge mechanism, the two shells are rotatably connected through the hinge mechanism, and the display screen is installed on the shell.

[0007] The embodiment of the present application discloses a hinge mechanism, wherein a first swing arm and a second swing arm are provided on opposite sides of a base, and one end of each of the first swing arm and the second swing arm is rotatably connected to the base, the other end of the first swing arm is rotatably connected to a shell connecting member, and the other end of the second swing arm is slidably connected to the shell connecting member, so that two adjacent shells in an electronic device can form a rotational matching relationship through the above-mentioned hinge mechanism to switch between an unfolded state and a folded state, and when the hinge mechanism is in a folded state, the hinge mechanism can provide a larger accommodating space for a display screen of the electronic device, so that the cross-sectional shape of the folded part of the display screen is "tear drop-shaped", so as to reduce the degree of squeezing of the display screen and improve the service life of the display screen. Correspondingly, in order to ensure that the hinge mechanism can provide relatively reliable support for the display screen, the side edge of the support plate of the hinge mechanism away from the base is rotatably connected to the shell connecting piece, so that when the hinge mechanism is in an unfolded state, the support plate can support the display screen, and when the hinge mechanism is in a folded state, the rotation angle of the support plate is greater than the rotation angle of the shell connecting piece, wherein the rotation angle of the shell connecting piece is generally 90°. In this case, the support plate can avoid the display screen, thereby providing a relatively larger accommodation space for the display screen.

[0008] In the embodiment of the present application, the second swing arm can also provide a synchronization function and a function of limiting the position of the support plate, wherein the second swing arms located on opposite sides of the base rotate synchronously, so that the two adjacent shells in the electronic device using the hinge mechanism can rotate synchronously toward or away from each other, thereby achieving the purpose of synchronous unfolding and folding. At the same time, the second swing arm is also provided with a first support boss and a second support boss on the side facing the support plate, and the support plate is provided with a third support boss on the side facing the second swing arm. In the extension direction of the second half wall, the third support boss is supported on the first support boss, and the side edge of the support plate close to the base is supported on the second support boss, so that the first support boss and the second support boss can limit the movement of the support plate in the direction close to the base, so that when the electronic device in the folded state falls, the second swing arm can provide a limiting function for the support plate in the extension direction of the second swing arm to prevent it from moving in the direction close to the base, thereby preventing the space for accommodating the display screen in the hinge mechanism from becoming smaller, and ensuring that the display screen is basically not squeezed. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 and Figure 2 A schematic diagram of the structure of an electronic device in a folded state in the current technology; Figure 3 It is a structural schematic diagram of the first arm body in the second swing arm in the hinge mechanism disclosed in the embodiment of the present application; Figure 4 It is a structural schematic diagram of the second arm body in the second swing arm in the hinge mechanism disclosed in the embodiment of the present application; Figure 5 It is a schematic structural diagram of the first arm body in the second swing arm in the hinge mechanism disclosed in the embodiment of the present application in another direction; Figure 6 It is a schematic structural diagram of the second arm body in the second swing arm in the hinge mechanism disclosed in the embodiment of the present application in another direction; Figure 7 A schematic diagram of a partial structure of a support plate in a hinge mechanism disclosed in an embodiment of the present application; Figure 8 A schematic diagram of the cooperation between the first arm and the support plate in the hinge mechanism disclosed in the embodiment of the present application; Fig. 9 A schematic diagram of the cooperation between the second arm and the support plate in the hinge mechanism disclosed in the embodiment of the present application; Fig.10 It is a structural schematic diagram of the hinge mechanism disclosed in the embodiment of the present application in a folded state; Fig.11 It is a structural schematic diagram of the hinge mechanism disclosed in the embodiment of the present application in an unfolded state; Figure 12-Figure 17 All are cross-sectional schematic diagrams of the hinge mechanism disclosed in the embodiments of the present application; Fig.18 It is a cross-sectional schematic diagram of a housing connecting member in a hinge mechanism disclosed in an embodiment of the present application; Fig.19 It is a schematic diagram of the exploded structure of part of the hinge mechanism disclosed in the embodiment of the present application; Fig. 20 A schematic diagram of a partial structure of a self-locking structure in a hinge mechanism disclosed in an embodiment of the present application; Fig.21 It is a structural schematic diagram of a stabilizing mechanism in a hinge mechanism disclosed in an embodiment of the present application; Fig. 22 It is a structural schematic diagram of the swinging member in the hinge mechanism disclosed in the embodiment of the present application when it is located in the first locking position; Fig.23It is a structural schematic diagram of the swing member in the hinge mechanism disclosed in the embodiment of the present application when it is located in the second locking position; Fig.24 This is a schematic diagram of the structure of an electronic device disclosed in an embodiment of the present application.

[0010] Reference numerals: 1-hinge mechanism, 2-housing, 3-display screen, 31-first part, 32-second part, 33-third part, 100-base, 101-fourth step surface, 103-sixth step surface, 105-avoidance groove, 200-first swing arm, 210-first matching groove, 300-second swing arm, 301-first support boss, 302-second support boss, 303-gear teeth, 304-cam surface, 305-first step surface, 307-third step surface, 308-first pin shaft, 309-second pin shaft, 310-first arm body, 320-second arm body, 400-housing connector, 410-first slide slot, 420-second slide slot, 500-support plate, 510-third support boss, 520-second matching groove, 610-first elastic member, 620-sliding cam, 621-avoidance gap, 630-synchronous shaft, 640-blocking piece, 650-synchronous gear, 660-limiting member, 700-self-locking mechanism, 710-moving member, 711-first slot section, 712-second slot section, 713-first locking position, 714-second locking position, 715-first track slot, 716-second track slot, 720-swinging member, 730-second elastic member, 740-first positioning column, 750-second positioning column, 760-stopper, 800-stabilizing mechanism, 810-first connecting rod, 820-second connecting rod, 830-third connecting rod, 840-fourth connecting rod, 850-first sliding block, 860-second sliding block, 871-positioning block, 872-hinged column, 900 - Hinged lid. DETAILED DESCRIPTION

[0011] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0012] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0013] The embodiment of the present application discloses a hinge mechanism, which can be applied to an electronic device, and the electronic device is specifically 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. Figure 1-Figure 23 As shown, the hinge mechanism includes a base 100, a first swing arm 200, a second swing arm 300, a shell connector 400 and a support plate 500. Of course, the hinge mechanism usually also includes other components such as a hinge cover 900. Considering the simplicity of the text, they will not be introduced here one by one.

[0014] like Fig.24 As shown, the present application also provides an electronic device, which includes a housing 2, a display screen 3 and the above-mentioned hinge mechanism 1. Among them, two adjacent housings 2 in the electronic device can form a rotational connection relationship through the hinge mechanism 1, and the display screen 3 can be installed on the hinge mechanism 1 and the housing 2 to form a foldable electronic device with folding ability. In addition, the display screen 3 can be a flexible screen as a whole, or the display screen 3 can include a first part 31, a second part 32 and a third part 33, wherein the third part 33 is connected between the first part 31 and the second part 32, and the first part 31 and the second part 32 are respectively supported on two adjacent housings 2, the first part 31 and the second part 32 can be flexible structures, or can be rigid structures, the third part 33 is opposite to the hinge mechanism 1, and the third part 33 is a flexible structure.

[0015] For the hinge mechanism disclosed in the embodiment of the present application, the base 100 is the basic structure in the hinge mechanism, and other components in the hinge mechanism can be directly or indirectly installed or connected to the base 100, so that the hinge mechanism can form an integral structure and provide a rotational connection for two adjacent shells.

[0016] The shell connector 400 is a device in the hinge mechanism that is directly used to connect with the shell. Usually, the shell connector 400 can form a fixed connection relationship with the corresponding shell through connectors such as screws, that is, in an electronic device, any shell is also correspondingly equipped with a shell connector 400.

[0017] As shown in the figure, in order to ensure that the hinge mechanism can provide a rotational connection relationship for two adjacent shells in the electronic device, a first swing arm 200 and a second swing arm 300 are provided on opposite sides of the base 100, and one end of any first swing arm 200 and the second swing arm 300 is rotationally connected to the base 100, and correspondingly, the other end of the first swing arm 200 is rotationally connected to the shell connecting piece 400. Typically, both opposite ends of the first swing arm 200 can be rotatably connected to the base 100 and the shell connector 400 respectively through a cylindrical shaft structure. Of course, in order to enable the hinge mechanism to provide a relatively larger accommodating space for the display screen, the end of the first swing arm 200 connected to the base 100 can adopt a bearing structure to form a rotational matching relationship with the base 100, so that the rotation axis between the first swing arm 200 and the base 100 is located outside the base 100 and above the screen support surface of the base 100. In this case, when the hinge mechanism is in a folded state, the clamping space formed is relatively larger, so that the cross-sectional shape of the folded part of the display screen can be "water drop-shaped", which can greatly reduce the degree of bending of the display screen and improve the service life of the display screen.

[0018] As for the second swing arm 300, it is used to provide a synchronization effect. For this reason, in the embodiment of the present application, the second swing arms 300 located on the opposite sides of the base 100 rotate synchronously. That is, in the process of the second swing arm 300 located on one side of the base 100 rotating relative to the base 100 in the hinge mechanism disclosed in the embodiment of the present application, the second swing arm 300 located on the other side of the base 100 can be driven to rotate synchronously relative to the base 100, and the rotation directions of the second swing arms 300 located on the opposite sides of the base 100 are opposite, that is, the two rotate synchronously in opposite directions. Based on this, when the first swing arm 200 and the base 100 are rotatably connected by the above-mentioned bearing structure, the second swing arm 300 and the base 100 can be connected to each other by a cylindrical shaft structure. More specifically, the two can be rotatably connected by a synchronizing shaft 630, and the synchronizing shaft 630 is arranged on one end of the second swing arm 300 and the base 100 to provide a rotatable connection for the two. In this case, the first swing arm 200 and the second swing arm 300 are not colinear with respect to the rotation axis of the base 100. Therefore, unlike the first swing arm 200 and the shell connecting member 400, which are formed in a rotational connection, in the embodiment of the present application, one end of the second swing arm 300 is rotationally connected to the base 100, and the other end of the second swing arm 300 is slidingly connected to the shell connecting member 400, thereby ensuring that the first swing arm 200 and the second swing arm 300 on the same side of the base 100 can rotate normally relative to the base 100. Fig.14 and Fig.17As shown, in the embodiment of the present application, the housing connector 400 is provided with a second slide groove 420, and at least a portion of the end of the second swing arm 300 away from the base 100 is slidably matched with the second slide groove 420. At the same time, a linkage relationship is also formed between the second swing arm 300 and the first swing arm 200. Specifically, the first swing arm 200 is provided with a first matching groove 210, and the second swing arm 300 includes a first pin 308, and the first pin 308 extends into the first matching groove 210, so that the first swing arm 200 and the second swing arm 300 form a linkage relationship during the rotation of the first swing arm 200 and the second swing arm 300 relative to the base 100.

[0019] In addition, when the first swing arm 200 and the base 100 are rotationally connected via a bearing-like structure, and the second swing arm 300 is rotationally connected to the base 100 via a synchronization shaft 630, the maximum rotation angle of the first swing arm 200 relative to the base 100 is greater than the maximum rotation angle of the second swing arm 300 relative to the base 100, and relative to the rotation axis of the first swing arm 200, since the rotation axis of the second swing arm 300 is further outward, that is, in the width direction of the base 100, the rotation axis of the second swing arm 300 is located outside the rotation axis of the first swing arm 200, thereby enabling the hinge mechanism in a folded state to provide a relatively large accommodating space for the display screen. In the hinge mechanism in the unfolded state, the distribution direction of the shell connecting members 400 on the two opposite sides of the base 100 is recorded as the width direction of the base 100, and the rotation axis of the first swing arm 200 relative to the base 100 is the length direction of the base 100, and the thickness direction of the base 100 is perpendicular to the aforementioned width direction and length direction. More intuitively, the aforementioned width direction can be Fig.10 The direction X in the thickness direction can be Fig.10 The direction Z in the figure, correspondingly, the aforementioned rotation axis, that is, the length direction is the direction Y.

[0020] As described above, the maximum rotation angle of the first swing arm 200 relative to the base 100 is greater than the maximum rotation angle of the second swing arm 300 relative to the base 100, and the maximum rotation angles of the second swing arm 300 and the shell connector 400 relative to the base 100 are usually both about 90°, which makes the maximum rotation angle of the first swing arm 200 relative to the base 100 greater than 90°. In order to ensure that the hinge mechanism is in the unfolded state, the support plate 500 can provide good support for the display screen. When the hinge mechanism is in the folded state, the support plate 500 can avoid the display screen together with the first swing arm 200 to provide a larger accommodation space for the display screen. In the embodiment of the present application, the side edge of the support plate 500 away from the base 100 is rotatably connected to the shell connector 400, which enables the support plate 500 to also have the ability to rotate relative to the shell connector 400.

[0021] More specifically, the support plate 500 and the shell connector 400 may be provided with a hole structure and an axis structure respectively, and by plugging and matching the hole structure and the axis structure, it can be ensured that the support plate 500 can rotate relative to the shell connector 400. In addition, the power source for driving the support plate 500 to rotate to avoid the display screen can be the display screen itself, that is, during the folding process, the display screen squeezes the support plate 500 to make the support plate 500 rotate relative to the shell connector 400 to avoid the display screen; the power source for driving the support plate 500 to reset and provide support for the display screen can be a device such as the first swing arm 200. During the unfolding process, the support plate 500 is squeezed by one end of the first swing arm 200 connected to the base 100, so that the support plate 500 can be reset with the unfolding action of the first swing arm 200, and provide good support for the unfolded display screen. In another embodiment of the present application, the second swing arm 300 further includes a second pin 309, and the support plate 500 is provided with a second matching groove 520. During the assembly process of the hinge mechanism, the second pin 309 extends into the second matching groove 520, and then during the rotation of the second swing arm 300 relative to the base 100, the second swing arm 300 can drive the support plate 500 to rotate accordingly through the second pin 309. Of course, the power source for driving the support plate 500 to avoid and reset can also be other devices or structures, which is not limited in this article.

[0022] As described above, the end of the first swing arm 200 away from the base 100 can be rotatably connected to the shell connector 400 through a cylindrical shaft structure. In order to minimize the maximum rotation angle of the first swing arm 200 relative to the base 100, when the hinge mechanism is in a folded state, the portion of the bearing of the first swing arm 200 connected to the base 100 using a bearing structure that is located in the bearing groove of the base 100 is still relatively large, so as to improve the connection reliability between the first swing arm 200 and the base 100. In another embodiment of the present application, a first slide groove 410 can be formed on the shell connecting member 400, and the end of the first swing arm 200 away from the base 100 is located in the first slide groove 410 and is slidably connected to the first slide groove 410. Therefore, during the rotation of the first swing arm 200 relative to the base 100, the first swing arm 200 can rotate relative to the shell connecting member 400 while sliding in the first slide groove 410, thereby achieving the purpose of reducing the maximum rotation angle of the first swing arm 200 relative to the base 100. Of course, in the embodiment of the present application, it is necessary to restrict parameters such as the extension direction and position of the first slide groove 410. Considering the simplicity of the text, the aforementioned parameters will not be introduced in detail in this article.

[0023] As described above, the side edge of the support plate 500 away from the base 100 is rotatably connected to the shell connecting member 400. In layman's terms, the side edge of the support plate 500 close to the base 100 can be the inner side edge, and accordingly, the side edge of the support plate 500 connected to the shell connecting member 400 is its outer side edge. Obviously, in the hinge mechanism disclosed in the embodiment of the present application, the inner side edge of the support plate 500 is a free end. In order to prevent the display screen from being squeezed when the electronic device using the hinge mechanism disclosed in the embodiment of the present application falls in a folded state, in the embodiment of the present application, the second swing arm 300 is further provided with a first support boss 301 and a second support boss 302 on the side facing the support plate 500, and correspondingly, the support plate 500 is provided with a third support boss 510 on the side facing the second swing arm 300.

[0024] At the same time, in the extension direction of the second swing arm 300, the third supporting boss 510 is supported on the first supporting boss 301, and the side edge of the supporting plate 500 close to the base 100, that is, the inner side edge (or free end) of the supporting plate 500 is supported on the second supporting boss 302, so that the first supporting boss 301 and the second supporting boss 302 can limit the movement of the supporting plate 500 in the direction close to the base 100, so as to prevent the supporting plate 500 from moving in the direction close to the base 100 due to inertia when the electronic device falls, causing the space originally used to accommodate the display screen to become smaller, thereby preventing the display screen from being squeezed.

[0025] Specifically, the first support boss 301, the second support boss 302 and the third support boss 510 can all be substantially stepped structures, and the parameters of the structures that cooperate with each other correspond, so as to ensure that the third support boss 510 can be supported on the first support boss 301, and the free end of the support plate 500 can be supported on the second support boss 302. Of course, in order to facilitate processing, the edges of the first support boss 301, the second support boss 302 and the third support boss 510 can also be provided with chamfers and other structures, and the dimensions and other parameters of the above three are not limited herein.

[0026] The embodiment of the present application discloses a hinge mechanism, wherein a first swing arm 200 and a second swing arm 300 are provided on opposite sides of a base 100, and one end of each of the first swing arm 200 and the second swing arm 300 is rotatably connected to the base 100, the other end of the first swing arm 200 is rotatably connected to a shell connector 400, and the other end of the second swing arm 300 is slidably connected to the shell connector 400, so that two adjacent shells in an electronic device can form a rotational matching relationship through the hinge mechanism to switch between an unfolded state and a folded state, and when the hinge mechanism is in a folded state, the hinge mechanism can provide a larger accommodating space for a display screen of the electronic device, so that the cross-sectional shape of the folded portion of the display screen is "tear drop-shaped", so as to reduce the degree of squeezing of the display screen and improve the service life of the display screen. Correspondingly, in order to ensure that the hinge mechanism can provide relatively reliable support for the display screen, the side edge of the support plate 500 of the hinge mechanism away from the base 100 is rotatably connected to the shell connector 400, so that when the hinge mechanism is in an unfolded state, the support plate 500 can support the display screen, and when the hinge mechanism is in a folded state, the rotation angle of the support plate 500 is greater than the rotation angle of the shell connector 400, wherein the rotation angle of the shell connector 400 is generally 90°. In this case, the support plate 500 can avoid the display screen, thereby providing a relatively larger accommodation space for the display screen.

[0027] In the embodiment of the present application, the second swing arm 300 can also provide a synchronization effect and a function of limiting the position of the support plate 500, wherein the second swing arms 300 located on opposite sides of the base 100 rotate synchronously, so that two adjacent shells in an electronic device using the hinge mechanism can rotate toward or away from each other synchronously, thereby achieving the purpose of synchronous unfolding and folding. At the same time, a first supporting boss 301 and a second supporting boss 302 are provided on the side of the second swing arm 300 facing the support plate 500, and a third supporting boss 510 is provided on the side of the support plate 500 facing the second swing arm 300. In the extension direction of the second swing arm, the third supporting boss 510 is supported on the first supporting boss 301, and the side edge of the support plate 500 close to the base 100 is supported on the second supporting boss 302, so that the first supporting boss 301 and the second supporting boss 302 can limit the movement of the support plate 500 in the direction close to the base 100, so that when the electronic device in the folded state falls, the second swing arm 300 can provide a limiting effect for the support plate 500 in the extension direction of the second swing arm 300 to prevent it from moving in the direction close to the base 100, thereby preventing the space for accommodating the display screen in the hinge mechanism from becoming smaller, thereby ensuring that the display screen is basically not squeezed.

[0028] As described above, the second swing arm 300 in the hinge mechanism can provide a synchronization effect. In detail, in the hinge mechanism disclosed in the embodiment of the present application, the surface of the end of the second swing arm 300 connected to the base 100 can be formed with gear teeth 303, and the hinge mechanism also includes a pair of synchronous gears 650 that are transmission-connected. By making the second swing arms 300 on the opposite sides of the base 100 respectively and correspondingly connected to the paired synchronous gears 650, the synchronous gears 650 can be used to drive the second swing arm 300 on the other side of the base 100 to rotate toward or away from each other during the rotation of any second swing arm 300 relative to the base 100.

[0029] In a specific embodiment of the present application, optionally, any second swing arm 300 may only include an independent structure, and the independent structure is formed with gear teeth 303, a first support boss 301 and a second support boss 302. In order to improve the stability of the hinge mechanism, in a specific embodiment of the present application, the second swing arm 300 may include a first arm body 310 and a second arm body 320 that are independent of each other, and the first arm body 310 and the second arm body 320 are distributed along the rotation axis of the first swing arm 200, which can increase the size range of the entire second swing arm 300 in the aforementioned rotation axis. At the same time, by making the first arm body 310 and the second arm body 320 both slidably connected to the shell connecting member 400, the matching size between the entire second swing arm 300 and the shell connecting member 400 in the rotation axis of the first swing arm 200 is relatively large, thereby improving the matching stability between the second swing arm 300 and the shell connecting member 400, and preventing the occurrence of jamming or stuck between components during the operation of the hinge mechanism.

[0030] In the embodiment of the present application, structures such as gear teeth 303, first support boss 301 and second support boss 302 can be set only on one of the first arm body 310 and the second arm body 320, which can reduce the overall processing difficulty of the entire second swing arm 300. To this end, in a specific embodiment of the present application, the first arm body 310 is provided with a first support boss 301 and a second support boss 302, so that the first arm body 310 is mainly used to provide support for the support plate 500. Correspondingly, the second arm body 320 is provided with gear teeth 303 and a second support boss 302, so that the second arm body 320 can provide support for the support plate 500 while the second arm body 320 can also be connected to the second swing arm 300 on the other side of the base 100 through the gear teeth 303, so that the second arm body 320 can also be used as an execution component of the synchronization function, which makes the functions of the first arm body 310 and the second arm body 320 decentralized, which makes the stability of each device relatively higher.

[0031] As described above, the second swing arms 300 disposed on opposite sides of the base 100 can form a synchronous rotational cooperation relationship between the two housings connected to the hinge mechanism. In order to make the function of the hinge mechanism more comprehensive, in a specific embodiment of the present application, the hinge mechanism can also include a first elastic member 610 and a sliding cam 620, wherein the sliding cam 620 and the base 100 slide in cooperation with each other in the rotation axis of the first swing arm 200, and by providing a cam surface 304 on one end face of the sliding cam 620 in the second swing arm 300, the sliding cam 620 can form a cam-coordinated assembly relationship with the second swing arm 300, and by elastically connecting the first elastic member 610 between the sliding cam 620 and the base 100 in the rotation axis of the first swing arm 200, the first elastic member 610 can provide an elastic extrusion force for the sliding cam 620, so as to ensure that the second swing arm 300 has a certain damping feeling during the rotation relative to the base 100.

[0032] Of course, when the second swing arm 300 is rotated relative to the base 100 by an external force, the elastic force of the first elastic member 610 can be overcome, so that the second swing arm 300 can rotate relative to the sliding cam 620, and the second swing arm 300 drives the sliding cam 620 to move relative to the base 100 along the rotation axis of the first swing arm 200. During the movement of the sliding cam 620, the first elastic member 610 can be squeezed, and the first elastic member 610 can be used to provide a damping feeling. In addition, the matching structure between the sliding cam 620 and the second swing arm 300 can be designed so that after the second swing arm 300 rotates relative to the base 100 by a preset angle from the unfolded state and the folded state, the elastic force of the first elastic member 610 can be used to keep the second swing arm 300 and the base 100 relatively stationary, so that the hinge mechanism has a hovering capability.

[0033] Specifically, the sliding cam 620 can be sleeved on the synchronization shaft 630, and by assembling the sliding cam 620 and the synchronization shaft 630 with each other through a key connection, it can be ensured that the sliding cam 620 can form a relatively sliding matching relationship with the base 100 on the rotation axis of the first swing arm 200. In another embodiment of the present application, the same sliding cam 620 can be matched with both of the two second swing arms 300 on the opposite sides of the base 100. In this case, the sliding cam 620 is sleeved on the two synchronization shafts 630 together, and even if the surfaces of the synchronization shaft 630 and the sliding cam 620 that match each other are circular surfaces, it can be ensured that the sliding cam 620 can form a sliding matching relationship with the base 100 on the rotation axis of the first swing arm 200.

[0034] The first elastic member 610 can be specifically a compression spring, and the first elastic member 610 can be sleeved on the synchronous shaft 630 to improve the stability of the first elastic member 610. Of course, the number of the first elastic members 610 can be multiple, so that the service life of each first elastic member 610 and the damping reliability of the hinge mechanism are relatively high. As described above, the first elastic member 610 can be elastically squeezed between the sliding cam 620 and the base 100. Considering that the relative movement amplitude between the synchronous shaft 630 and the base 100 in the rotation axis direction of the first swing arm 200 is usually relatively small, or even zero, for this purpose, the first elastic member 610 bracket can be squeezed on the connecting device between the synchronous shaft 630 and the base 100. In more detail, the second swing arms 300 on the opposite sides of the base 100 are respectively provided with synchronous shafts 630. For this purpose, in the hinge mechanism disclosed in the embodiment of the present application, a limiter 660 and a baffle 640 are provided, wherein the limiter 660 can be fixedly installed on the base 100 by connecting members such as screws, and a through hole is provided on the limiter 660, which corresponds to the synchronous shaft 630 one by one, and by forming a step surface at the end of the first end of the synchronous shaft 630, the synchronous shaft 630 can be mutually limited with the limiter 660 in the aforementioned rotation axis direction, so as to limit the second end of the synchronous shaft 630 from moving in the direction close to the limiter 660; and for the other end of the synchronous shaft 630, the baffle 640 can be clamped on the two synchronous shafts 630, so that the two synchronous shafts 630 can be synchronously moved relative to the base 100 along the aforementioned rotation axis by using the baffle 640, and the baffle 640 can also limit the sliding cam 620 from disengaging from the synchronous shaft 630.

[0035] Based on the above structure, during the assembly of the first elastic member 610, one end of the first elastic member 610 can be made to abut against the end surface of the sliding cam 620 that is away from the second swing arm 300, and the other end of the first elastic member 610 can be made to abut against the stopper 660. Of course, in the case where there are multiple first elastic members 610, in order to improve the consistency of the multiple first elastic members 610 and reduce the design difficulty of the stopper 660, a structure such as a blocking piece 640 can also be provided between the first elastic member 610 and the stopper 660, so that the multiple first elastic members 610 can work together by using the blocking piece 640. Similarly, a limiting protrusion or a limiting groove can also be provided on the synchronization shaft 630 to limit each other with the blocking piece 640 in the rotation axis direction of the first swing arm 200.

[0036] As described above, the hinge mechanism disclosed in the embodiment of the present application has an unfolded state and a folded state. When the hinge mechanism is in the unfolded state, the corresponding angles between the second swing arms 300 on the opposite sides of the base 100 are both 180°, and the screen support surfaces of the shell connectors 400 on the opposite sides of the shell are coplanar, so as to provide good support for the display screen. When the hinge mechanism is in the folded state, the angle between the second swing arms 300 on the opposite sides of the shell can usually be 0°, while the angle between the support plates 500 on the opposite sides of the base 100 is usually not 0°. In more detail, when the hinge mechanism is in the folded state, the planes where the screen support surfaces of the support plates on the opposite sides of the base 100 are located can usually form a flared structure, and the flared surface faces the base 100, thereby providing a relatively large accommodation space for the display screen. That is, in the process of switching between the unfolded state and the folded state, the rotation angle of any second swing arm 300 is usually 90°, and the rotation angle of the support plate 500 is usually slightly greater than 90°.

[0037] Furthermore, in the hinge mechanism disclosed in the above-mentioned embodiment of the present application, by providing a first supporting boss 301 and a second supporting boss 302 on the second swing arm 300, and providing a third supporting boss 510 on the support plate 500, when the hinge mechanism in the folded state falls, the second swing arm 300 can be used to provide a limiting effect for the support plate 500 in the extension direction of the second swing arm 300, so as to limit the movement of the support plate 500 in the direction close to the base 100, thereby achieving the purpose of preventing the display screen from being squeezed.

[0038] Considering that when the hinge mechanism in the folded state falls, the second swing arm 300 may have a tendency to switch to the unfolded state due to inertia, and if the aforementioned tendency is converted into an actual unfolding action, it may cause the failure of the limiting cooperation relationship between the first support boss 301 and the third support boss 510, and the second support boss 302 and the support plate 500, thereby causing the second swing arm 300 to be unable to limit the movement of the support plate 500 in the direction of its own extension toward the direction close to the base 100.

[0039] For this reason, in the embodiments of the present application, Fig.19 and Fig. 20As shown, the hinge mechanism may further include a self-locking mechanism 700, which includes a moving part 710 and a swinging part 720, wherein the moving part 710 is movably connected to the base 100 along the rotation axis of the first swing arm 200. Of course, in order to minimize the overall thickness of the hinge mechanism, an avoidance groove 105 may be provided on the base 100, and the avoidance groove 105 is formed by being recessed from the screen supporting side of the base 100, so that at least a portion of the moving part 710 can be accommodated in the avoidance groove 105. At the same time, the moving member 710 is provided with a closed annular guide groove, the first end of the swinging member 720 is rotatably connected to the base 100, and the swinging member 720 is slidably installed in the guide groove. Specifically, a second positioning column 750 can be provided on the base 100, and the first end of the swinging member 720 is sleeved on the second positioning column 750, so that the swinging member 720 and the base 100 are rotatably matched, and for the second end of the swinging member 720, a matching protrusion and other structures can be provided, and the matching protrusion can be specifically a cylindrical protrusion, so that the second end of the swinging member 720 can form a relatively smooth sliding matching relationship with the guide groove by using the matching protrusion. In the hinge mechanism disclosed in the embodiment of the present application, the position of the second end of the swinging member 720 in the guide groove can be used to lock the hinge mechanism in a folded state.

[0040] In more detail, the guide groove includes a first groove section 711 and a second groove section 712. As mentioned above, the guide groove is a closed ring structure. For this reason, the respective opposite ends of the first groove section 711 and the second groove section 712 are connected to each other, thereby forming two locking positions, that is, the connection between the first groove section 711 and the second groove section 712 is respectively formed with a first locking position 713 and a second locking position 714, and the first locking position 713 is located on the side of the second locking position 714 away from the first end of the swinging member 720.

[0041] Of course, in order to ensure that the first locking position 713 and the second locking position 714 can provide a locking effect for the swing member 720, it is necessary to design the specific structures of the first slot section 711 and the second slot section 712. Specifically, the first slot section 711 and the second slot section 712 are both folded structures, that is, the first slot section 711 and the second slot section 712 generally start from the second locking position 714, and continue to extend in the direction away from the first end of the swing member 720 along the rotation axis of the first swing arm 200. When the first slot section 711 and the second slot section 712 are about to extend to the end, they both fold back to extend in the opposite direction, and after extending a short distance in the direction close to the first end of the swing member 720, they are connected to each other to form the first locking position 713.

[0042] During the process of the hinge mechanism disclosed in the embodiment of the present application switching from the folded state to the unfolded state, the second swing arms 300 on the opposite sides of the base 100 rotate toward each other to drive the movable member 710 to move toward the first end of the swing member 720, and to move the other end of the swing member 720 out of the first locking position 713, thereby releasing the hinge mechanism from the locked state and enabling it to switch to the unfolded state.

[0043] Based on the above structure, when the hinge mechanism disclosed in the embodiment of the present application is in a folded state, by making the second end of the swing member 720 located in the first locking position 713, the swing member 720 is disengaged from the first locking position 713, which requires the second swing arm 300 to move towards each other, that is, to make the two further rotate in the direction of approaching each other, which is opposite to the direction of the unfolding tendency that the second swing arm 300 is subjected to when the hinge mechanism in the folded state falls. Therefore, when the hinge mechanism falls, the second end of the swing member 720 can be kept in the first locking position 713 to prevent the second swing arm 300 from automatically unfolding due to the unfolding tendency, thereby ensuring that the second swing arm 300 can still reliably provide a limiting effect for the support plate 500 to limit the movement of the support plate 500 in the direction close to the base 100.

[0044] Of course, when the user needs to unfold the electronic device, external force can be applied to enable the second swing arms 300 located on the opposite sides of the base 100 in the hinge mechanism in the folded state to further rotate toward each other, thereby driving the moving member 710 to move a short distance toward the first end of the swing member 720 so that the second end of the swing member 720 can be disengaged from the first locking position 713. After that, the swing member 720 and the moving member 710 are no longer in a mutually locked matching state, so that the second swing arms 300 on the opposite sides of the base 100 can be rotated away from each other again, so that the electronic device can be unfolded normally.

[0045] Specifically, the moving member 710 and the sliding cam 620 can be fixedly connected to each other, so that when the second swing arm 300 rotates relative to the base 100, the sliding cam 620 moves relative to the base 100 along the rotation axis of the first swing arm 200 to drive the moving member 710 to move accordingly. Fig.11For example, during the process of the swing member 720 moving out from the first locking position 713, the specific moving direction of the moving member 710 can be the right side. After the swing member 720 moves out from the first locking position 713 and moves to the second locking position 714, the specific moving direction of the moving member 710 can be the left side. In the above two processes, the rotation direction of the second swing arm 300 relative to the base 100 is different. Then, the second swing arm 300 can be driven to move the sliding cam 620 to the right for a short distance first and then to the left by designing the specific matching structure between the second swing arm 300 and the sliding cam 620 and the initial matching state of the two. Of course, in this process, other devices can be additionally provided so that the hinge mechanism can be kept in the folded state during the process of switching from the unfolded state to the folded state, and will not be over-folded to cause the swing member 720 to be out of the state of the first locking position 713.

[0046] In another embodiment of the present application, in order to reduce the difficulty of designing the matching structure between the sliding cam 620 and the second swing arm 300, a structure similar to a cam device can be designed between the second swing arm 300 and the base 100, so that the hinge mechanism can stop directly in the folded state during the process of switching from the unfolded state to the folded state. In detail, in the embodiment of the present application, the second swing arm 300 and the base 100 can be movably connected in the rotation axis of the first swing arm 200, and the second swing arm 300 is provided with a first step surface 305, a second step surface and a third step surface 307 that are mutually connected and sequentially raised on the end surface of one end facing the base 100, and correspondingly, the base 100 is provided with a fourth step surface 101, a fifth step surface and a sixth step surface 103 that are mutually connected and sequentially raised on the end surface facing the second swing arm 300.

[0047] Based on this, when the hinge mechanism is in the folded state, the third step surface 307 can be made to be opposite to the fifth step surface, and the second step surface can be made to be opposite to the sixth step surface 103, so that the distance between the second swing arm 300 and the base 100 has space to be further reduced. Furthermore, in the process of the second swing arms 300 on opposite sides of the base 100 rotating toward each other from the folded state, the most protruding third step surface 307 in the second swing arm 300 can be matched with the most concave fourth step surface 101 on the base 100, so that the distance between the second swing arm 300 and the base 100 is minimized. In this process, since the second swing arm 300 also forms a cam matching relationship with the sliding cam 620, in the process of the second swing arm 300 rotating relative to the base 100, the second swing arm 300 will also drive the sliding cam 620 to move away from itself. Obviously, the moving direction of the second swing arm 300 relative to the base 100 is opposite to the moving direction of the sliding cam 620 relative to the second swing arm 300. Fig.11For example, the base 100 is regarded as a reference system, and it is considered that the second swing arm 300 moves to the right relative to the base 100, and the sliding cam 620 moves to the left relative to the second swing arm 300.

[0048] At the same time, in the embodiment of the present application, by designing the span dimension between the third step surface 307 and the second step surface in the aforementioned rotation axis direction, in the process that the second swing arms 300 on the opposite sides of the base 100 move toward each other from the folded state, it can be ensured that the moving distance of the second swing arm 300 relative to the base 100 is greater than the moving distance of the sliding cam 620 relative to the second swing arm 300, so that in the aforementioned process, the purpose of making the sliding cam 620 move to the right relative to the base 100 is achieved, thereby driving the moving member 710 to move in the direction close to the first end of the swing member 720, and making the second end of the swing member 720 disengage from the first locking position 713.

[0049] After the second swing arms 300 on the opposite sides of the base 100 rotate toward each other and the second end of the swing member 720 disengages from the first locking position 713, the second swing arms 300 on the opposite sides of the base 100 can rotate away from each other again. During this process, along the rotation axis of the first swing arm 200, the movement direction of the second swing arm 300 relative to the base 100 and the movement direction of the sliding cam 620 relative to the second swing arm 300 are the same, so that the sliding cam 620 can continue to move away from the base 100, squeeze the first elastic member 610, and drive the moving member 710 to move away from the first end of the swing member 720, so that the swing member 720 moves toward the second locking position 714.

[0050] In order to more intuitively describe the action process of the hinge mechanism disclosed in the above embodiment of the present application, taking the case where the hinge mechanism is in a folded state and the angle between the second swing arms 300 on both sides of the base 100 (hereinafter referred to as "the two second swing arms 300") is 0° as an example, in the above embodiment of the present application, in the process of the two second swing arms 300 rotating toward each other from a state greater than 0° to 0°, the third step surface 307 of the second swing arm 300 can form a relatively stable clamping state with the fifth step surface, and under the influence of the friction force between the two, during the folding process of the hinge mechanism, the second swing arms 300 can be limited from continuing to rotate toward each other, so that the hinge mechanism can be maintained in a folded state. At this time, the second end of the swing member 720 is locked to the first locking position 713 of the movable member 710.

[0051] In the process of switching the two second swing arms 300 from 0° to the unfolded state, the two second swing arms 300 are first subjected to the external force and continue to rotate toward each other to a state such as -2°. In this process, the second swing arms 300 move rightward relative to the base 100 by a distance such as 3mm, so that the spacing between the second swing arms 300 and the base 100 is minimized, and the sliding cam 620 moves leftward relative to the second swing arm 300 by a distance such as 2mm, so that the sliding cam 620 and the second swing arm 300 are switched from the zero-matching state to the above-mentioned 2mm spacing, which indirectly makes the sliding cam 620 and the second swing arm 300 switch from the zero-matching state to the above-mentioned 2mm spacing. The cam 620 can move 1 mm to the right relative to the base 100. Based on this, by fixing the moving member 710 to the sliding cam 620, the moving member 710 can also move 1 mm to the right relative to the base 100, so that the second end of the swing member 720 is released from the first locking position 713. Afterwards, in the process of the two second swing arms 300 switching from -2° to 0°, the second swing arm 300 moves 3 mm to the left relative to the base 100, so that the second swing arm 300 and the base 100 are switched from the zero-matching state to the above-mentioned spacing. At the same time, , the sliding cam 620 moves rightward relative to the second swing arm 300, and switches back to the zero-matching state with the 2mm spacing between the two, so that the sliding cam 620 moves 3mm to the left relative to the base 100 as a whole, thereby driving the moving member 710 to move to the left, that is, the moving member 710 moves in a direction away from the first end of the swing member 720, thereby moving the swing member 720 to a position between the first locking position 713 and the second locking position 714; thereafter, as the two second swing arms 300 continue to expand from 0°, the sliding cam 620 and the second swing arms 300 are moved to the left. The distance between the arms 300 gradually increases from 0 again. At the same time, the third step surface 307 of the second swing arm 300 can also cooperate with the most protruding sixth step surface 103 in the base 100, so that the distance between the second swing arm 300 and the base 100 can also be further increased, so that the sliding cam 620 can continue to move to the left relative to the base 100, and drive the moving part 710 to move together, until the distance between the sliding cam 620 and the base 100 reaches the maximum, so that the second end of the swing part 720 moves to the second locking position 714.

[0052] As described above, the second swing arm 300 can be an integral structure, and the integral second swing arm 300 can be formed with the first support boss 301, the second support boss 302, and gear structures. In another embodiment of the present application, the second swing arm 300 can include the first arm body 310 and the second arm body 320. In this case, the sliding cam 620 can include the first sliding cam and the second sliding cam. Of course, in order to reduce the difficulty of processing, the structures of the two can be the same, and the first sliding cam can be set on the side of the first arm body 310 away from the second arm body 320, and the second sliding cam can be set on the side of the second arm body 320 away from the first arm body 310, that is, in the rotation axis of the first swing arm 200, the first arm body 310 and the second arm body 320 are centrally arranged, and the first sliding cam and the second sliding cam are located on the outside of the first arm body 310 and the second sliding cam.

[0053] In the case where the first sliding cam and the second sliding cam are respectively provided on the outer sides of the first arm body 310 and the second arm body 320, in order to reduce the number of components, the first elastic member 610 can be provided only on the side of the second sliding cam away from the second arm body 320, and the first elastic member 610 is no longer provided on the side of the first sliding cam away from the first arm body 310. Of course, in order to ensure that the first elastic member 610 can still act between the first sliding cam and the first arm body 310, in the embodiment of the present application, the above-mentioned synchronous shaft 630 and the blocking piece 640 are provided, the first end of the synchronous shaft 630 cooperates with the base 100, and the blocking piece 640 is clamped at the second end of the synchronous shaft 630, by making the first sliding cam, the first arm body 310, the second arm body 320 and the second sliding cam 620 sequentially arranged between the second end and the first end of the synchronous shaft 630, and making the first elastic member 610 elastically abut against the first end of the synchronous shaft 630 (specifically, it can be the above-mentioned limit member 660 or between the limit member 660 and the first elastic member 610). The first elastic member 610 is formed between the baffle 640 at the second end of the synchronization shaft 630 and the second sliding cam, so that when the second swing arm 300 rotates relative to the base 100 and drives the sliding cam 620 away from the second swing arm 300, the second sliding cam can directly squeeze the first elastic member 610, and the first sliding cam can squeeze the baffle 640 at the second end of the synchronization shaft 630 to move the first end of the synchronization shaft 630 toward the second arm body 320, thereby indirectly squeezing the first elastic member 610, so that one or a group of first elastic members 610 arranged on the side of the second sliding cam away from the second arm body 320 can provide damping effect for the first sliding cam and the second sliding cam at the same time.

[0054] In order to improve the reliability of the second swing arm 300 of the above structure, in the embodiment of the present application, the first arm body 310 and the second arm body 320 are provided with a first step surface 305, a second step surface and a third step surface 307 on the side facing each other, and correspondingly, the fourth step surface 101, the fifth step surface and the sixth step surface 103 are provided on the opposite sides of the part of the base 100 located between the first arm body 310 and the second arm body 320, so as to ensure that the first arm body 310 and the second arm body 320 can move correspondingly relative to the base 100 along the aforementioned rotation axis.

[0055] In addition, as described above, the movable member 710 can be fixedly connected to the sliding cam 620. When the first elastic member 610 abuts against the side of the second sliding cam away from the second arm body 320, the movable member 710 can cooperate with the first sliding cam. Specifically, the two can be fixedly connected.

[0056] In order to prevent the movable member 710 and the sliding cam 620 from being easily stuck during movement due to the overly tight connection formed by the fixed connection, in another embodiment of the present application, only the first sliding cam can be enabled to have the ability to drive the movable member 710 to move toward the first end close to the swinging member 720. In detail, in the hinge mechanism disclosed in the embodiment of the present application, the self-locking mechanism 700 can also include a block 760, which is fixedly connected to the movable member 710, and the block 760 can be arranged on the side of the first sliding cam facing the first arm body 310. In this case, when the first sliding cam moves relative to the base 100 in the direction close to the first elastic member 610, the first sliding cam can drive the blocking piece 640 and the movable member 710 to move accordingly, so that the movable member 710 moves in the direction close to the first end of the swinging member 720. The aforementioned process is the process of causing the second end of the swinging member 720 to disengage from the first locking position 713.

[0057] In the embodiment of the present application, another device can be set as a driving source for the moving member 710 to move in the direction away from the first end of the swinging member 720. The device can specifically be a second elastic member 730, and the second elastic member 730 is extruded and arranged between the moving member 710 and the base 100 along the rotation axis of the first swing arm 200. More specifically, the second elastic member 730 can be in a natural state only when the second end of the swinging member 720 is located in the second locking position 714. Even when the second end of the swinging member 720 is located in the second locking position 714, the second elastic member 730 can also be in a compressed state. That is, the second elastic member 730 can always provide the moving member 710 with an elastic force that moves the moving member 710 in the direction away from the first end of the swinging member 720. Therefore, when the first sliding cam moves relative to the base 100 in the direction away from the first elastic member 610, since the first sliding cam no longer restricts the stopper 760, it can be ensured that the stopper 760 and the moving member 710 can move in the direction away from the first end of the swinging member 720 under the action of the second elastic member 730.

[0058] In addition, in order to improve the movement stability of the second elastic member 730, in the embodiment of the present application, a first positioning column 740 can also be set on the side of the first end of the moving member 710 close to the swing member 720, and another first positioning column 740 can be set at the corresponding position on the base 100, and the two opposite ends of the second elastic member 730 are respectively sleeved on the two first positioning columns 740, so that the two first positioning columns 740 can provide a guiding effect for the second elastic member 730 to prevent the second elastic member 730 from bending during the extrusion process. Of course, in the process of designing the first positioning column 740, it is necessary to determine the length of the two first positioning columns 740 according to the ultimate compression state of the second elastic member 730 to prevent the two first positioning columns 740 from hindering the movement process of the moving member 710. In other words, when the second end of the swing member 720 is located at the second locking position 714, the two first positioning columns 740 can be just in contact or still spaced from each other.

[0059] As described above, during the operation of the hinge mechanism, the first sliding cam and the second elastic member 730 can be used to drive the moving member 710 to reciprocate relative to the base 100 in the rotation axis direction of the first swing arm 200. Considering that the first sliding cam and the second elastic member 730 are both fitted on the same side of the moving member 710, in order to further improve the operation stability of the moving member 710, the hinge mechanism disclosed in the embodiment of the present application can also include a stabilizing mechanism 800, which includes a first connecting rod 810, a second connecting rod 820, a first slider 850 and a second slider 860, and the first connecting rod 810 One end of each of the first connecting rod 810 and the second connecting rod 820 is rotatably connected to the base 100, and the other end of each of the first connecting rod 810 and the second connecting rod 820 is rotatably connected to the first slider 850 and the second slider 860 respectively. The first slider 850 and the second slider 860 are slidingly matched with the base 100 along the distribution direction of the opposite sides of the base 100, that is, in the width direction of the base 100, the first slider 850 and the second slider 860 are slidingly matched with the base 100, and the first slider 850 and the second slider 860 are both located on the side of the moving member 710 away from the second elastic member 730.

[0060] In this case, by setting the first track groove 715 and the second track groove 716 on the moving member 710, and at the same time, setting a positioning block 871 between the first end and the second end of each of the first connecting rod 810 and the second connecting rod 820, and the two positioning blocks 871 are respectively slidably installed in the first track groove 715 and the second track groove 716, so that the other side of the moving member 710 away from the second elastic member 730 can form a linkage relationship with the base 100 through the stabilizing mechanism 800.

[0061] The first slider 850 and the second slider 860 can cooperate with each other through a groove-rail structure. Specifically, guide rails can be provided on the first slider 850 and the second slider 860, and guide grooves can be provided on the base 100, so that the first slider 850 and the second slider 860 can both slide and cooperate with the base 100 in the width direction of the base 100. In another embodiment of the present application, a sink groove can be provided on the base 100, and guide rails can be provided on the opposite side walls of the sink groove. At the same time, guide grooves can also be provided on the opposite side walls of the first slider 850 and the second slider 860. By making the two guide grooves on each of the first slider 850 and the second slider 860 cooperate with the two guide rails on the base 100, the stability of the first slider 850 and the second slider 860 can be further improved. For the first connecting rod 810 and the second connecting rod 820, an axial hole-type assembly structure can be used to enable their respective opposite ends to form a reliable rotational fit relationship with the corresponding structure. For example, a hinge column 872 can be provided on the base 100, and a hinge hole can be provided at one end of each of the first connecting rod 810 and the second connecting rod 820 to be hingedly matched with the corresponding hinge column 872.

[0062] In this case, when the movable member 710 moves toward the direction close to the first end of the swinging member 720, the movable member 710 drives the first connecting rod 810 and the second connecting rod 820 to rotate relative to the base 100 through the two positioning blocks 871, and the deflection angle of the first connecting rod 810 and the second connecting rod 820 relative to the rotation axis of the first swing arm 200 is reduced, thereby causing the first slider 850 and the second slider 860 to move away from each other along the aforementioned width direction. Conversely, when the movable member 710 moves toward the direction away from the first end of the swinging member 720, the movable member 710 drives the first connecting rod 810 and the second connecting rod 820 to rotate relative to the base 100 through the two positioning blocks 871, and the deflection angle of the first connecting rod 810 and the second connecting rod 820 relative to the rotation axis of the first swing arm 200 is increased, thereby causing the first slider 850 and the second slider 860 to approach each other along the aforementioned width direction.

[0063] In order to further improve the reliability of the stabilizing mechanism 800, optionally, the stabilizing mechanism 800 also includes a third connecting rod 830 and a fourth connecting rod 840, and the third connecting rod 830 and the fourth connecting rod 840 are both arranged on the outside of the first connecting rod 810 and the second connecting rod 820, and one end of each of the third connecting rod 830 and the fourth connecting rod 840 is rotatably connected to the base 100, and the other end of each of the two is rotatably connected to the first slider 850 and the second slider 860, respectively. Under the action of the third connecting rod 830 and the fourth connecting rod 840, the movement stability and accuracy of the moving member 710 can be further improved. Similarly, for the third connecting rod 830 and the fourth connecting rod 840, a stable rotation connection relationship can also be formed with the corresponding device through an axial hole structure. Of course, the specific parameters of each device in the stabilizing mechanism 800 are not limited herein.

[0064] In the above embodiment, during the movement of the moving member 710 toward the first end of the swinging member 720, the first sliding cam also moves toward the first end of the swinging member 720. At this time, the first slider 850 and the second slider 860 will not hinder the movement of the first sliding cam regardless of their positions. During the movement of the moving member 710 toward the first end away from the swinging member 720, since the first sliding cam also moves toward the first end away from the swinging member 720, if the first slider 850 and the second slider 860 are located on the side of the first sliding cam away from the stopper 760, the first slider 850 and the second slider 860 may hinder the movement of the first sliding cam. For this reason, in the embodiment of the present application, the first sliding cam is further provided with an avoidance notch 621, and the avoidance notch 621 is formed by a depression on the surface of the side of the first sliding cam away from the stopper 760. Therefore, during the movement of the first sliding cam toward the first end away from the swinging member 720, the avoidance notch 621 can be used to avoid the first slider 850 and the second slider 860 to prevent the movement of the first sliding cam from being affected. Of course, the initial spacing between the first sliding cam and the first slider 850 and the second slider 860 in the axial direction of rotation of the first swing arm 200 can also be made relatively large. In this case, even if the avoidance notch 621 is no longer provided on the first sliding cam, the first slider 850 and the second slider 860 will not hinder the first sliding cam from moving in the direction away from the first end of the swinging member 720.

[0065] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0066] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A hinge mechanism, characterized in that: It comprises a base (100), a first swing arm (200), a second swing arm (300), a housing connection member (400) and a support plate (500), wherein: The first swing arm (200) and the second swing arm (300) are provided on opposite sides of the base (100), and one end of each of the first swing arm (200) and the second swing arm (300) is rotatably connected to the base (100), and the second swing arms (300) located on opposite sides of the base (100) rotate synchronously; the other end of the first swing arm (200) is rotatably connected to the shell connecting piece (400), a side edge of the support plate (500) away from the base (100) is rotatably connected to the shell connecting piece (400), and the other end of the second swing arm (300) is slidably connected to the shell connecting piece (400); A first supporting boss (301) and a second supporting boss (302) are provided on a side of the second swing arm (300) facing the supporting plate (500); a third supporting boss (510) is provided on a side of the supporting plate (500) facing the second swing arm (300); in the extending direction of the second swing arm (300), the third supporting boss (510) is supported on the first supporting boss (301); and a side edge of the supporting plate (500) close to the base (100) is supported on the second supporting boss (302); the first supporting boss (301) and the second supporting boss (302) are used to limit the movement of the supporting plate (500) in a direction close to the base (100).

2. The hinge mechanism according to claim 1, characterized in that: The second swing arm (300) comprises a first arm body (310) and a second arm body (320), the first arm body (310) and the second arm body (320) are distributed along the rotation axis of the first swing arm (200), and the first arm body (310) and the second arm body (320) are both slidably connected to the shell connecting member (400), the first arm body (310) is provided with the first supporting boss (301) and the second supporting boss (302), the second arm body (320) is provided with gear teeth (303) and the second supporting boss (302), and the gear teeth (303) are drivingly connected to the second swing arm (300) on the other side of the base (100).

3. The hinge mechanism according to claim 1, characterized in that: The hinge mechanism further comprises a first elastic member (610) and a sliding cam (620), wherein the sliding cam (620) and the base (100) are slidably matched in the rotation axis direction of the first swing arm (200), and the sliding cam (620) is matched with the cam of the second swing arm (300), and the first elastic member (610) is elastically connected between the sliding cam (620) and the base (100) in the rotation axis direction, and when the second swing arm (300) rotates relative to the base (100), the second swing arm (300) drives the sliding cam (620) to move along the rotation axis and squeezes the first elastic member (610).

4. The hinge mechanism according to claim 3, characterized in that: The hinge mechanism further comprises a self-locking mechanism (700), the self-locking mechanism (700) comprising a moving member (710) and a swinging member (720), the moving member (710) being movably connected to the base (100) along the rotation axis, the moving member (710) being provided with a closed annular guide groove, the first end of the swinging member (720) being rotationally connected to the base (100), and the second end of the swinging member (720) being slidably mounted in the guide groove, the guide groove comprising a first groove section (711) and a second groove section (712), a first locking position (713) and a second locking position (714) being respectively formed at the connection between the first groove section (711) and the second groove section (712), the first locking position (713) being located on a side of the second locking position (714) away from the first end of the swinging member (720); During the process of the hinge mechanism switching from the folded state to the unfolded state, the second swing arms on the opposite sides of the base rotate toward each other to drive the movable member to move toward the first end of the swing member, so that the second end of the swing member moves out from the first locking position.

5. The hinge mechanism according to claim 4, characterized in that: The second swing arm (300) is movably connected to the base (100) in the direction of the rotation axis; a first step surface (305), a second step surface and a third step surface (307) which are connected to each other and are raised in sequence are provided on an end surface of the second swing arm (300) facing the base (100); a fourth step surface (101), a fifth step surface and a sixth step surface (103) which are connected to each other and are raised in sequence are provided on an end surface of the base (100) facing the second swing arm (300); When the hinge mechanism is in a folded state, the third step surface (307) is opposite to the fifth step surface, and the second step surface is opposite to the sixth step surface (103), and in the process of the second swing arms on opposite sides of the base rotating toward each other from the folded state, along the rotation axis of the first swing arm, in the second swing arm and the sliding cam that cooperate with each other, the movement direction of the second swing arm relative to the base is opposite to the movement direction of the sliding cam relative to the second swing arm, and the movement distance of the second swing arm (300) relative to the base (100) is greater than the movement distance of the sliding cam (620) relative to the second swing arm (300).

6. The hinge mechanism according to claim 5, characterized in that: The second swing arm (300) comprises a first arm body (310) and a second arm body (320), the first arm body (310) and the second arm body (320) are spaced apart along the rotation direction of the first swing arm (200), and the first arm body (310) and the second arm body (320) are both slidably connected to the housing connecting member (400), the sliding cam (620) comprises a first sliding cam (620) and a second sliding cam (620), the first sliding cam (620) is arranged on a side of the first arm body (310) away from the second arm body (320), the second sliding cam (620) is arranged on a side of the second arm body (320) away from the first arm body (310), and the first step surface (305), the second step surface and the third step surface (307) are both arranged on the sides of the first arm body (310) and the second arm body (320) facing each other; The hinge mechanism comprises a synchronous shaft (630) and a baffle (640), wherein the baffle (640) is clamped on the second end of the synchronous shaft (630), and the first sliding cam (620), the first arm body (310), the second arm body (320) and the second sliding cam (620) are sequentially arranged between the second end and the first end of the synchronous shaft (630), the first elastic member elastically abuts between the first end of the synchronous shaft and the second sliding cam, and the moving member (710) cooperates with the first sliding cam (620).

7. The hinge mechanism according to claim 6, characterized in that: The self-locking mechanism (700) further comprises a stopper (760) and a second elastic member (730), wherein the stopper (760) is fixedly connected to the movable member (710), the stopper (760) being arranged on a side of the first sliding cam (620) facing the first arm body (310), and the second elastic member (730) being extruded between the movable member (710) and the base (100) along the rotation axis.

8. The hinge mechanism according to claim 4, characterized in that: The hinge mechanism further comprises a stabilizing mechanism (800), the stabilizing mechanism (800) comprising a first connecting rod (810), a second connecting rod (820), a first sliding block (850) and a second sliding block (860), one end of each of the first connecting rod (810) and the second connecting rod (820) being rotatably connected to the base (100), the other end of each of the first connecting rod (810) and the second connecting rod (820) being rotatably connected to the first sliding block (850) and the second sliding block (860), respectively, the first sliding block (850) and the second sliding block (860) being slidably matched with the base (100) along the distribution direction of the two opposite sides of the base (100); The moving member (710) is provided with a first track groove and a second track groove, and a positioning block (871) is provided between the first end and the second end of each of the first connecting rod (810) and the second connecting rod (820), and is slidably mounted in the first track groove and the second track groove, respectively.

9. The hinge mechanism according to claim 8, characterized in that: The stabilizing mechanism (800) further comprises a third connecting rod (830) and a fourth connecting rod (840), wherein the third connecting rod (830) and the fourth connecting rod (840) are both arranged on the outside of the first connecting rod (810) and the second connecting rod (820), and one end of each of the third connecting rod (830) and the fourth connecting rod (840) is rotatably connected to the base (100), and the other end of each of the third connecting rod (830) and the fourth connecting rod (840) is rotatably connected to the first slider (850) and the second slider (860), respectively.

10. An electronic device, characterized in that: It comprises a housing (2), a display screen (3) and a hinge mechanism (1) according to any one of claims 1 to 9, wherein the two housings are rotatably connected via the hinge mechanism, and the display screen is mounted on the housings.

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