Hinge mechanism and electronic equipment

Abstract

The present application discloses a hinge mechanism and electronic equipment, belonging to the field of communication technology. The hinge mechanism includes a base, a first swing arm, a second swing arm, and a movable rod. The first swing arm is rotatably connected to the base via a first rotating shaft, the second swing arm is rotatably connected to the base via a second rotating shaft, and the movable rod is arranged between the first rotating shaft and the second rotating shaft. One of the movable rod and the first swing arm is provided with a first sliding groove along a second direction, and the other is provided with a first limiting protrusion. One of the movable rod and the second swing arm is provided with a second sliding groove along the second direction, and the other is provided with a second limiting protrusion. The first limiting protrusion is arranged in the first sliding groove, and the second limiting protrusion is arranged in the second sliding groove. Both the first limiting protrusion and the second limiting protrusion are movable in the second direction, and the first direction and the second direction intersect. When the first swing arm and the second swing arm rotate relative to the base, the movable rod moves relative to the base in the first direction, and the first limiting protrusion and the second limiting protrusion move synchronously in opposite directions.

Description

Technical Field

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

[0002] With the development of science and technology, people are becoming more and more dependent on electronic devices. In pursuit of a better visual experience, the display screens of electronic devices are getting larger and larger, which has led to a significant reduction in the portability and comfort of electronic devices.

[0003] To ensure that the portability and comfort of electronic devices are not compromised, the application scope of foldable electronic devices is becoming increasingly wider. In the related art, the hinge mechanism of some foldable electronic devices relies on a gear set to achieve synchronous folding and unfolding. Since the gear set includes multiple gears that mesh in sequence, the gears are large in size and thickness, which makes the gear set occupy a large space. If the size of the gears is reduced, the number of teeth and module of the gears will be reduced, which in turn affects the meshing degree between adjacent gears, thereby deteriorating the synchronization of the hinge mechanism. In addition, the hinge mechanism of some foldable electronic devices relies on a spiral structure to achieve synchronous folding and unfolding. However, the setting of the spiral structure requires a certain amount of axial space, resulting in a large axial space occupied by the hinge mechanism.

[0004] Therefore, the hinge mechanism of the existing foldable electronic device cannot take into account both reducing the occupied space and improving synchronization. Summary of the Invention

[0005] The purpose of the embodiments of the present application is to provide a hinge mechanism and an electronic device that can solve the problem in the related art that the hinge mechanism cannot take into account both reducing the occupied space and improving synchronization.

[0006] In a first aspect, an embodiment of the present application provides a hinge mechanism, comprising a base, a first swing arm, a second swing arm, and a movable rod, wherein the first swing arm is rotatably connected to the base via a first rotating shaft, the second swing arm is rotatably connected to the base via a second rotating shaft, and the movable rod is disposed between the first rotating shaft and the second rotating shaft, and the movable rod is movable relative to the base in a first direction;

[0007] One of the movable rod and the first swing arm is provided with a first sliding groove along the second direction, and the other is provided with a first limiting protrusion; one of the movable rod and the second swing arm is provided with a second sliding groove along the second direction, and the other is provided with a second limiting protrusion; the first limiting protrusion is arranged in the first sliding groove, and the second limiting protrusion is arranged in the second sliding groove, and both the first limiting protrusion and the second limiting protrusion are movable along the second direction, and the first direction and the second direction intersect;

[0008] When the first swing arm and the second swing arm rotate relative to the base, the moving rod moves along the first direction relative to the base, and the first limiting protrusion and the second limiting protrusion move synchronously in opposite directions.

[0009] In a second aspect, an embodiment of the present application further provides an electronic device, comprising a first device body, a second device body, and the above-mentioned hinge mechanism, wherein the first device body is connected to the second device body via the hinge mechanism;

[0010] During the relative rotation of the first device body and the second device body, the electronic device switches between an unfolded state and a folded state.

[0011] In an embodiment of the present application, the first swing arm and the moving rod form a crank slider mechanism. At the same time, the moving rod and the second swing arm also form a crank slider mechanism. Then, when the first swing arm and the second swing arm rotate, the moving rod is driven to move, and the moving rod can only move along the first direction, so that the first swing arm and the second swing arm can be rotated synchronously through the moving rod.

[0012] With this arrangement, the hinge mechanism can achieve synchronous rotation of the first and second swing arms relative to the base simply by moving the rod. Since the first end of the moving rod is movably connected to the first swing arm via the first slot and the first limiting protrusion, and the second end of the moving rod is movably connected to the second swing arm via the second slot and the second limiting protrusion, the moving rod moves only within the range of motion of the first swing arm itself, without occupying any additional space in the thickness direction of the hinge mechanism. Furthermore, compared to structures such as gear sets and spiral structures that occupy a large axial space, the moving rod is rod-shaped and occupies less space in the axial direction of the hinge mechanism. Therefore, the hinge mechanism in the embodiment of the present application can achieve both reduced space occupation and improved synchronization performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a structural schematic diagram of a hinge mechanism disclosed in one embodiment of the present application;

[0014] Figure 2 This is one of the partial structural diagrams of the hinge mechanism disclosed in one embodiment of the present application (excluding the base);

[0015] Figure 3 This is the second partial structural diagram of the hinge mechanism disclosed in one embodiment of the present application (excluding the base and the second swing arm);

[0016] Figure 4 is a schematic diagram of a connection structure between a first swing arm and a second swing arm disclosed in an embodiment of the present application;

[0017] Figure 5 is a cross-sectional view of a hinge mechanism in an unfolded state disclosed in one embodiment of the present application;

[0018] Figure 6 is a cross-sectional view of a hinge mechanism in a folded state disclosed in one embodiment of the present application;

[0019] Figure 7 is a structural schematic diagram of a hinge mechanism disclosed in another embodiment of the present application;

[0020] Figure 8 is a schematic diagram of the cooperation between the first swing arm and the first cylindrical protrusion disclosed in another embodiment of the present application;

[0021] Figure 9 It is a structural diagram of an electronic device disclosed in an embodiment of the present application.

[0022] Description of reference numerals:

[0023] 100-base, 110-first rotating shaft, 120-second rotating shaft,

[0024] 210-first swing arm, 220-second swing arm, 201-cylinder,

[0025] 300-mobile rod,

[0026] 410-first limiting protrusion, 411-first limiting structure, 420-second limiting protrusion, 421-second limiting structure,

[0027] 510-first chute, 520-second chute,

[0028] 600-support rod, 610-connector,

[0029] 700-sleeve,

[0030] 800-friction plate,

[0031] A-first direction, B-second direction,

[0032] 910-first device body, 920-second device body. DETAILED DESCRIPTION

[0033] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described 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 are within the scope of protection of this application.

[0034] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0035] The hinge mechanism and electronic device provided in the embodiments of the present application are described in detail below with reference to specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0036] Please refer to Figures 1-9 The hinge mechanism disclosed in the embodiment of the present application includes a base 100, a first swing arm 210, a second swing arm 220 and a moving rod 300, wherein the base 100 serves as an installation base for the first swing arm 210 and the second swing arm 220, the first swing arm 210 and the second swing arm 220 are respectively located on both sides of the base 100, and the first swing arm 210 and the second swing arm 220 are respectively rotatably connected to the base 100, and the rotation axes of the first swing arm 210 and the second swing arm 220 are parallel; the moving rod 300 is respectively transmission-connected to the first swing arm 210 and the second swing arm 220, and the first swing arm 210 and the second swing arm 220 are synchronously rotated through the moving rod 300.

[0037] Optionally, the first swing arm 210 and the second swing arm 220 may be synchronous swing arms in the related art, or may be virtual swing arms.

[0038] Specifically, refer to Figure 5-Figure 7 As shown, the first swing arm 210 is rotatably connected to the base 100 via the first rotating shaft 110 , and the second swing arm 220 is rotatably connected to the base 100 via the second rotating shaft 120 . The first rotating shaft 110 and the second rotating shaft 120 are parallel. Optionally, the first swing arm 210 and the second swing arm 220 both include a barrel 201, the barrel 201 of the first swing arm 210 is sleeved on the outside of the first rotating shaft 110, and the barrel 201 of the second swing arm 220 is sleeved on the outside of the second rotating shaft 120. Moreover, the barrel 201 of the first swing arm 210 cooperates with the first rotating shaft 110 at the circumferential upper limit of the first rotating shaft 110, and the barrel 201 of the second swing arm 220 cooperates with the second rotating shaft 120 at the circumferential upper limit of the second rotating shaft 120, so that the first swing arm 210 drives the first rotating shaft 110 to rotate around the first rotating shaft 110 relative to the base 100, and the second swing arm 220 drives the second rotating shaft 120 to rotate around the second rotating shaft 120 relative to the base 100.

[0039] The moving rod 300 is disposed between the first rotating shaft 110 and the second rotating shaft 120 and is movable relative to the base 100 along a first direction A. Optionally, the first direction A may intersect with the direction in which the first rotating shaft 110 is located, and the first direction A intersects with the direction in which the first rotating shaft 110 points to the second rotating shaft 120.

[0040] Optionally, the moving rod 300 can be slidably connected to the base 100 along the first direction A. Further, optionally, the moving rod 300 and the base 100 can be slidably connected by matching slide rails and sliders, and the slide rails extend along the first direction A. Of course, the moving rod 300 and the base 100 can be slidably connected by other means; or, the movement direction of the moving rod 300 can be limited by other limiting structures, so that the moving rod 300 can move along the first direction A relative to the base 100.

[0041] One of the movable rod 300 and the first swing arm 210 is provided with a first sliding groove 510 along the second direction B, and the other is provided with a first limiting protrusion 410. The first sliding groove 510 is a bar-shaped sliding groove and extends along the second direction B. Alternatively, the first sliding groove 510 is provided at the first end of the movable rod 300 and the first limiting protrusion 410 is provided at the first limiting protrusion 410; or alternatively, the first limiting protrusion 410 is provided at the first end of the movable rod 300 and the first swing arm 210 is provided at the first limiting protrusion 410. The first limiting protrusion 410 is disposed within the first sliding groove 510 and is movable in the second direction B. In other words, the first limiting protrusion 410 and the first sliding groove 510 are slidably engaged in the second direction B.

[0042] One of the movable rod 300 and the second swing arm 220 is provided with a second sliding groove 520 along the second direction B, and the other is provided with a second limiting protrusion 420. The second sliding groove 520 is a bar-shaped sliding groove and extends along the second direction B. Optionally, the second sliding groove 520 is provided at the second end of the movable rod 300, and the second swing arm 220 is provided with a second limiting protrusion 420. The second limiting protrusion 420 is disposed within the second sliding groove 520 and is movable along the second direction B. In other words, the second limiting protrusion 420 and the second sliding groove 520 are slidably engaged in the second direction B. Optionally, the first sliding groove 510 and the second sliding groove 520 can be the same sliding groove or different sliding grooves.

[0043] The first limiting protrusion 410 and the second limiting protrusion 420 can both be cylindrical protrusions, square protrusions, or other structures. The embodiment of the present application does not limit the specific structures of the first limiting protrusion 410 and the second limiting protrusion 420. The first limiting protrusion 410 only needs to be able to slide and rotate relative to the first sliding groove 510, and the second limiting protrusion 420 only needs to be able to slide and rotate relative to the second sliding groove 520.

[0044] The first direction A intersects with the second direction B. Optionally, the second direction B may be perpendicular to the first direction A, or the second direction B may intersect with the first direction A but not be perpendicular.

[0045] When the first swing arm 210 and the second swing arm 220 rotate relative to the base 100, the movable rod 300 moves in the first direction A relative to the base 100, the first limiting protrusion 410 and the second limiting protrusion 420 move synchronously in opposite directions, the first limiting protrusion 410 slides and rotates in the first sliding groove 510, and the second limiting protrusion 420 slides and rotates in the second sliding groove 520.

[0046] In an embodiment of the present application, the first swing arm 210 and the moving rod 300 form a crank slider mechanism. At the same time, the moving rod 300 and the second swing arm 220 also form a crank slider mechanism. Then, when the first swing arm 210 and the second swing arm 220 rotate, they drive the moving rod 300 to move, and the moving rod 300 can only move along the first direction A, so that the first swing arm 210 and the second swing arm 220 can be rotated synchronously through the moving rod 300.

[0047] With this arrangement, the hinge mechanism can achieve synchronous rotation of the first swing arm 210 and the second swing arm 220 relative to the base 100 solely through the movable rod 300. Since the first end of the movable rod 300 is movably connected to the first swing arm 210 via the first slot 510 and the first limiting protrusion 410, and the second end of the movable rod 300 is movably connected to the second swing arm 220 via the second slot 520 and the second limiting protrusion 420, the movable rod 300 moves only within the movable range of the first swing arm 210 itself, without occupying additional space in the thickness direction of the hinge mechanism. Furthermore, compared to structures such as gear sets and spiral structures that occupy a large axial space, the movable rod 300 is rod-shaped and occupies less space in the axial direction of the hinge mechanism. Therefore, the hinge mechanism in the embodiment of the present application can achieve both reduced space occupation and improved synchronization performance.

[0048] In an optional embodiment, the first direction A is perpendicular to the direction of the first rotation axis 110, and the first direction A is perpendicular to the direction from the first rotation axis 110 to the second rotation axis 120. Optionally, the second direction B is perpendicular to the first direction A, and the second direction B is perpendicular to the direction of the first rotation axis 110, that is, the second direction B is the direction from the first rotation axis 110 to the second rotation axis 120.

[0049] In this embodiment, since the first rotating shaft 110 is parallel to the second rotating shaft 120 and the first direction A is perpendicular to the first rotating shaft 110, then the first direction A is also perpendicular to the second rotating shaft 120. Therefore, the inclination angles of the first direction A relative to the first rotating shaft 110 and the second rotating shaft 120 are equal, that is, the power transmission effect achieved by the cooperation of the first limiting protrusion 410 and the first sliding groove 510 and the power transmission effect achieved by the cooperation of the second limiting protrusion 420 and the second sliding groove 520 are equal. This makes it more convenient to set the moving rod 300 between the first rotating shaft 110 and the second rotating shaft 120, and to connect the first swing arm 210 and the second swing arm 220 to the moving rod 300 through the same structure.

[0050] Of course, in other embodiments, the first direction A may intersect with but not be perpendicular to the direction of the first rotation axis 110 , and the first direction A may intersect with but not be perpendicular to the direction from the first rotation axis 110 to the second rotation axis 120 .

[0051] In an alternative embodiment, the first limiting protrusion 410 is a first cylindrical protrusion, disposed on the end surface of the first swing arm 210 or the first end of the movable rod 300. Optionally, the first cylindrical protrusion protrudes from the end surface of the barrel portion 201 of the first swing arm 210. Specifically, the first limiting protrusion 410 is a cylindrical protrusion. When the first swing arm 210 and the second swing arm 220 rotate relative to the base 100, the first cylindrical protrusion slides along the first sliding groove 510 and rotates relative to the first sliding groove 510.

[0052] In this embodiment, the first limiting protrusion 410 is a cylindrical protrusion, which not only slides with the first slide groove 510, but also can rotate smoothly relative to the first slide groove 510, which is conducive to the smooth transmission and cooperation between the first swing arm 210 and the moving rod 300, and avoids the relative movement jamming of the first swing arm 210 and the moving rod 300.

[0053] In an alternative embodiment, the second limiting protrusion 420 is a second cylindrical protrusion. The first cylindrical protrusion is disposed on the end surface of the second swing arm 220 or the second end of the movable rod 300. Optionally, the second cylindrical protrusion protrudes from the end surface of the barrel portion 201 of the second swing arm 220. Specifically, the second limiting protrusion 420 is a cylindrical protrusion. When the first and second swing arms 210, 220 rotate relative to the base 100, the second cylindrical protrusion slides along the second slide groove 520 and rotates relative to the second slide groove 520.

[0054] In this embodiment, the second limiting protrusion 420 is a cylindrical protrusion, which not only slides with the second slide groove 520, but also can rotate smoothly relative to the second slide groove 520, which is conducive to the smooth transmission cooperation between the second swing arm 220 and the moving rod 300, and avoids the relative movement jamming of the second swing arm 220 and the moving rod 300.

[0055] Of course, the first cylindrical protrusion can be set at other positions of the first swing arm 210 or the moving rod 300, and the second cylindrical protrusion can be set at other positions of the second swing arm 220 or the moving rod 300. In other embodiments, the first limiting protrusion 410 and the second limiting protrusion 420 can also adopt other structures besides the cylindrical structure.

[0056] In an optional embodiment, the first swing arm 210 and the second swing arm 220 both include a barrel 201, the barrel 201 of the first swing arm 210 is sleeved on the outside of the first rotating shaft 110, and the barrel 201 of the second swing arm 220 is sleeved on the outside of the second rotating shaft 120, and one of the end surface of the barrel 201 of the first swing arm 210 and the first end of the moving rod 300 is provided with a first sliding groove 510, and the other is provided with a first limiting protrusion 410; one of the end surface of the barrel 201 of the second swing arm 220 and the second end of the moving rod 300 is provided with a second sliding groove 520, and the other is provided with a second limiting protrusion 420.

[0057] With this embodiment, the end of the moving rod 300 is matched with the end surface of the cylinder 201 through the limiting protrusion and the sliding groove. Since the cylinder 201 of the first swing arm 210 is relatively close to the first rotating shaft 110, and the cylinder 201 of the second swing arm 220 is relatively close to the second rotating shaft 120, the matching position of the first sliding groove 510 and the first limiting protrusion 410 is relatively close to the rotation axis of the first swing arm 210, and the matching position of the second sliding groove 520 and the second limiting protrusion 420 is also relatively close to the rotation axis of the second swing arm 220. Therefore, during the rotation of the first swing arm 210 and the second swing arm 220, the rotation angle of the first limiting protrusion 410 around the first rotating shaft 110 is small, and the rotation angle of the second limiting protrusion 420 around the second rotating shaft 120 is also small, so that the sliding path of the moving rod 300 along the first direction A is short, avoiding the moving rod 300 from having a large range of movement and occupying a large space, which is beneficial to reducing the space occupied by the hinge mechanism.

[0058] Of course, in other embodiments, the first swing arm 210 and the second swing arm 220 can be provided with the first swing arm 210 or the first limiting protrusion 410 at other positions other than the barrel 201 to achieve transmission cooperation with the moving rod 300 .

[0059] In an optional embodiment, reference Figure 2-Figure 6As shown, a first limiting protrusion 410 is provided on the end surface of the cylindrical portion 201 of the first swing arm 210; a first sliding groove 510 is provided at the first end of the movable rod 300. A second limiting protrusion 420 is provided on the end surface of the cylindrical portion 201 of the second swing arm 220; and a second sliding groove 520 is provided at the second end of the movable rod 300. The second direction B is parallel to the direction from the first rotating axis 110 to the second rotating axis 120. Optionally, the first direction A is perpendicular to the second direction B, and the first direction A is perpendicular to the first rotating axis 110.

[0060] When the first swing arm 210 and the second swing arm 220 rotate, the first limiting protrusion 410 rotates around the first rotation axis 110, and the second limiting protrusion 420 rotates around the second rotation axis 120. The first limiting protrusion 410 acts on the groove wall of the first sliding groove 510, and the second limiting protrusion 420 acts on the groove wall of the second sliding groove 520. The force applied by the first limiting protrusion 410 is decomposed into a component force along the first direction A and a component force along the second direction B. Among them, the component force along the second direction B causes the first limiting protrusion 410 to slide along the first sliding groove 510, and the component force along the first direction The component of force toward A causes the first limiting protrusion 410 to drive the moving rod 300 to move along the first direction A; similarly, the force applied by the second limiting protrusion 420 is also decomposed into a component of force along the first direction A and a component of force along the second direction B, wherein the component of force along the second direction B causes the second limiting protrusion 420 to slide along the second slide groove 520, and the component of force along the first direction A causes the second limiting protrusion 420 to drive the moving rod 300 to move along the first direction A, so the first limiting protrusion 410 and the second limiting protrusion 420 jointly drive the moving rod 300 to move along the first direction.

[0061] In a further embodiment, the distance between the first limiting protrusion 410 and the first rotating shaft 110 is a first distance, the distance between the second limiting protrusion 420 and the second rotating shaft 120 is a second distance, and the first distance is equal to the second distance. It should be noted that the diameters of the first rotating shaft 110 and the second rotating shaft 120 are equal, that is, the distance between the first limiting protrusion 410 and the axis of the first rotating shaft 110 and the distance between the second limiting protrusion 420 and the axis of the second rotating shaft 120 are equal.

[0062] During the rotation of the first swing arm 210 and the second swing arm 220, the first swing arm 210 applies a first driving force to the moving rod 300 through the first limiting protrusion 410 and the first sliding groove 510, and the second swing arm 220 applies a second driving force to the moving rod 300 through the second limiting protrusion 420 and the second sliding groove 520. According to this embodiment, the first distance is equal to the second distance, so the magnitude of the first driving force is equal to the second driving force, which is beneficial to the smooth sliding of the moving rod 300 as a whole along the first direction A. At the same time, it is more beneficial to improve the synchronization of the first swing arm 210 and the second swing arm 220.

[0063] Of course, in other embodiments, the first distance and the second distance may not be equal.

[0064] In another embodiment, reference Figure 7 and Figure 8 As shown, the first limiting protrusion 410 is provided on the first end of the moving rod 300, and the first sliding groove 510 is provided on the end surface of the cylindrical portion 201 of the first swing arm 210, and the first sliding groove 510 extends radially along the first rotating shaft 110. Similarly, the second limiting protrusion 420 is provided on the second end of the moving rod 300, and the second sliding groove 520 is provided on the end surface of the cylindrical portion 201 of the second swing arm 220, and the second sliding groove 520 extends radially along the second rotating shaft 120. Alternatively, the first sliding groove 510 is provided on the end surface of the cylindrical portion 201 of the first swing arm 210, and the second sliding groove 520 is provided on the end surface of the cylindrical portion 201 of the second swing arm 220.

[0065] Optionally, the first limiting protrusion 410 , the second limiting protrusion 420 and the moving rod 300 may be an integrated structure or a split structure.

[0066] refer to Figure 8 As shown, when the first swing arm 210 and the second swing arm 220 rotate, the first slide groove 510 rotates around the first rotation axis 110, and the second slide groove 520 rotates around the second rotation axis 120. The groove wall surface of the first slide groove 510 acts on the first limiting protrusion 410, so that the first limiting protrusion 410 slides along the first slide groove 510, and the groove wall surface of the second slide groove 520 acts on the second limiting protrusion 420, so that the second limiting protrusion 420 slides along the second slide groove 520. The force exerted by the groove wall surface of the first slide groove 510 on the first limiting protrusion 410 is decomposed into a component force along the first direction A and a component force along the second direction B. Among them, the component force along the second direction B causes the first limiting protrusion 410 to slide along the first direction A. The slide groove 510 slides, and the component force along the first direction A causes the first slide groove 510 to drive the moving rod 300 to move along the first direction A through the first limiting protrusion 410; similarly, the force exerted by the groove wall of the second slide groove 520 on the second limiting protrusion 420 is decomposed into a component force along the first direction A and a component force along the second direction B, wherein the component force along the second direction B causes the second limiting protrusion 420 to slide along the second slide groove 520, and the component force along the first direction A causes the second slide groove 520 to drive the moving rod 300 to move along the second direction B through the second limiting protrusion 420, so the first limiting protrusion 410 and the second limiting protrusion 420 jointly drive the moving rod 300 to move along the first direction A.

[0067] In an alternative embodiment, reference Figure 4As shown, a first limiting structure 411 is provided at the end of the first limiting protrusion 410. The first limiting protrusion 410 extends through the first sliding groove 510, and the first limiting structure 411 cooperates with the first swing arm 210 or the moving rod 300 having the first sliding groove 510 at the upper axial limit position of the first rotating shaft 110. Alternatively, the first sliding groove 510 is provided at the first end of the moving rod 300, and the first limiting structure 411 contacts the moving rod 300 at the upper axial limit position of the first rotating shaft 110; or, the first sliding groove 510 is provided on the cylindrical portion 201 of the first swing arm 210, and the first limiting protrusion 410 contacts the first swing arm 210 at the upper axial limit position of the first rotating shaft 110.

[0068] The first limiting structure 411 can be a block-shaped protrusion, an annular protrusion or other structures. The embodiment of the present application does not limit the specific structure of the first limiting structure 411. The first limiting structure 411 can protrude from the surface of the first limiting protrusion 410 to prevent the first limiting protrusion 410 from detaching from the first sliding groove 510.

[0069] In this embodiment, a first limiting structure 411 is added to the first limiting protrusion 410 to limit the position of the first limiting protrusion 410 relative to the first sliding groove 510, preventing the first limiting protrusion 410 from escaping from the first sliding groove 510, and ensuring continuous transmission cooperation between the first swing arm 210 and the moving rod 300.

[0070] Of course, in other embodiments, the first limiting structure 411 may not be provided at the end of the first limiting protrusion 410 , and the first limiting protrusion 410 may be prevented from escaping from the first sliding groove 510 by increasing the axial length of the first limiting protrusion 410 in the first rotating shaft 110 .

[0071] In an alternative embodiment, reference Figure 4 As shown, a second limiting structure 421 is provided at the end of the second limiting protrusion 420. The second limiting protrusion 420 extends through the second sliding slot 520, and the second limiting structure 421 cooperates with the second swing arm 220 or the movable rod 300, which has the second sliding slot 520, at the upper axial limit position of the second rotating shaft 120. Alternatively, the second end of the movable rod 300 is provided with the second sliding slot 520, and the second limiting structure 421 contacts the movable rod 300 at the upper axial limit position of the second rotating shaft 120; or, the barrel portion 201 of the second swing arm 220 is provided with the second sliding slot 520, and the second limiting protrusion 420 contacts the second swing arm 220 at the upper axial limit position of the second rotating shaft 120.

[0072] The second limiting structure 421 can be a block-shaped protrusion, an annular protrusion or other structures. The embodiment of the present application does not limit the specific structure of the second limiting structure 421. The second limiting structure 421 can protrude from the surface of the second limiting protrusion 420 to prevent the second limiting protrusion 420 from detaching from the second sliding groove 520.

[0073] In this embodiment, a second limiting structure 421 is added to the second limiting protrusion 420 to limit the position of the second limiting protrusion 420 relative to the first sliding groove 510, preventing the second limiting protrusion 420 from escaping from the second sliding groove 520, and ensuring continuous transmission cooperation between the second swing arm 220 and the moving rod 300.

[0074] Of course, in other embodiments, the second limiting structure 421 may not be provided at the end of the second limiting protrusion 420 , and the second limiting protrusion 420 may be prevented from escaping from the second sliding groove 520 by increasing the axial length of the second limiting protrusion 420 in the second rotating shaft 120 .

[0075] Optionally, the first limiting protrusion 410 and the second limiting protrusion 420 can both be structures in the prior art such as a pin. The pin can be inserted into the first end of the moving rod 300 or the first swing arm 210 to form the first limiting protrusion 410, and the cap body of the pin directly serves as the first limiting structure 411; the pin can also be inserted into the second end of the moving rod 300 or the second swing arm 220 to form the second limiting protrusion 420, and the cap body of the pin directly serves as the second limiting structure 421.

[0076] In the scheme of this application, reference is made to Figure 1-Figure 7 As shown, the hinge mechanism further includes a support rod 600 and a sleeve 700. The support rod 600 extends along a first direction A, and the end of the support rod 600 is connected to the base 100. Optionally, the end of the support rod 600 can be connected to the base 100 by welding, bonding, or the like. Further, optionally, the base 100 is further provided with a connector 610, and one end of the support rod 600 and the connector 610 can be fixedly connected by welding, bonding, or the like. The sleeve 700 is connected to the movable rod 300. The sleeve 700 and the movable rod 300 can be connected by welding, bonding, or the like, or the sleeve 700 and the movable rod 300 can be formed into an integral structure by injection molding or other methods.

[0077] Furthermore, the sleeve 700 is sleeved on the outside of the support rod 600, and the sleeve 700 and the support rod 600 are slidably engaged. Alternatively, the sleeve 700 can be a square ring-shaped tube, and the support rod 600 can be a square rod, the square rod passing through the square tube, and the surface of the square rod is engaged with the inner wall surface of the square tube; the sleeve 700 can also be a circular ring-shaped tube, and the support rod 600 can be a round rod, the round rod passing through the circular ring-shaped tube, and the surface of the round rod is engaged with the inner wall surface of the circular ring-shaped tube. Of course, the sleeve 700 and the square rod can also be configured as other structures, as long as they can be slidably engaged in the first direction A.

[0078] In this embodiment, the hinge mechanism is equipped with an additional support rod 600, and the sleeve 700 is sleeved on the outside of the support rod 600, thereby increasing the matching area between the moving rod 300 and the support rod 600, which is more conducive to the stable sliding of the moving rod 300 along the first direction A.

[0079] Of course, in other embodiments, the hinge mechanism may not be provided with the sleeve 700 , and the movable rod 300 and the support rod 600 may be slidably engaged with each other through matching slide rails and sliders.

[0080] In a further embodiment, the hinge mechanism further includes a friction plate 800, which is disposed between the sleeve 700 and the support rod 600. Optionally, the friction plate 800 can be fixed to the inner wall surface of the sleeve 700 by bonding, welding, or the like. The friction plate 800 can have a square structure, i.e., the friction plate 800 is disposed on a portion of the inner wall surface of the sleeve 700. The friction plate 800 can also have an annular structure, i.e., the friction plate 800 is disposed at various positions on the inner wall surface of the sleeve 700.

[0081] By adopting this embodiment, by setting the friction plate 800, the friction force of the sleeve 700 during the sliding process relative to the support rod 600 is increased, that is, the friction force during the movement of the moving rod 300 is increased, and the damping force during the rotation of the first swing arm 210 and the second swing arm 220 is increased, which is conducive to the first swing arm 210 and the second swing arm 220 hovering at a certain angle.

[0082] Of course, in other embodiments, the hinge mechanism may not be provided with the friction plate 800 , and the inner wall surface of the sleeve 700 may be in direct sliding contact with the support rod 600 .

[0083] In an optional embodiment, the number of the moving rod 300 is one, that is, the hinge mechanism is only provided with one moving rod 300 .

[0084] In another embodiment, reference Figure 1-Figure 3 as well as Figure 7 As shown, there are multiple moving rods 300, which are spaced apart along the axial direction of the first rotating shaft 110. The first end of each moving rod 300 is respectively engaged with the first swing arm 210 through the first limiting protrusion 410 and the first sliding groove 510, and the second end of each moving rod 300 is respectively engaged with the second swing arm 220 through the second limiting protrusion 420 and the second sliding groove 520. The moving rods 300 can be evenly or unevenly distributed along the axial direction of the first rotating shaft 110.

[0085] With this embodiment, the number of movable rods 300 increases, and each movable rod 300 is respectively coupled with a different position of the first swing arm 210 and a different position of the second swing arm 220 for transmission, which is more conducive to the synchronous rotation of the entire first swing arm 210 and the entire second swing arm 220.

[0086] Based on the hinge mechanism disclosed in this application, the embodiment of this application also discloses an electronic device, referring to Figure 9As shown, the electronic device includes a first device body 910, a second device body 920, and the hinge mechanism of the above embodiment, wherein the first device body 910 is connected to the second device body 920 via the hinge mechanism. During the relative rotation of the first device body 910 and the second device body 920, the electronic device switches between the unfolded state and the folded state.

[0087] Optionally, both the first device body 910 and the second device body 920 include a frame, the frame of the first device body 910 is connected to the first swing arm 210 , and the frame of the second device body 920 is connected to the second swing arm 220 .

[0088] With this embodiment, the hinge mechanism of the electronic device can achieve synchronous rotation of the first swing arm 210 and the second swing arm 220 relative to the base 100 solely through the movable rod 300. Since the first end of the movable rod 300 is movably connected to the first swing arm 210 via the first slot 510 and the first limiting protrusion 410, and the second end of the movable rod 300 is movably connected to the second swing arm 220 via the second slot 520 and the second limiting protrusion 420, the movable rod 300 moves only within the movable range of the first swing arm 210 itself, without occupying additional space in the thickness direction of the hinge mechanism. Furthermore, compared to structures such as gear sets and spiral structures that occupy a large axial space, the movable rod 300 is rod-shaped and occupies less space in the axial direction of the hinge mechanism. Therefore, the electronic device in the embodiment of the present application can achieve both reduced space and improved synchronization performance.

[0089] The electronic devices disclosed in the embodiments of the present application may be smart phones, tablet computers, e-book readers, wearable devices, electronic game consoles, and other devices. The embodiments of the present application do not limit the specific types of electronic devices.

[0090] 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 this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A hinge mechanism, characterized in that: The mobile arm comprises a base, a first swing arm, a second swing arm and a moving rod, wherein the first swing arm is rotatably connected to the base via a first rotating shaft, the second swing arm is rotatably connected to the base via a second rotating shaft, and the moving rod is disposed between the first rotating shaft and the second rotating shaft, and the moving rod can move relative to the base along a first direction; One of the movable rod and the first swing arm is provided with a first sliding groove along the second direction, and the other is provided with a first limiting protrusion; one of the movable rod and the second swing arm is provided with a second sliding groove along the second direction, and the other is provided with a second limiting protrusion; the first limiting protrusion is arranged in the first sliding groove, and the second limiting protrusion is arranged in the second sliding groove, and both the first limiting protrusion and the second limiting protrusion are movable along the second direction, and the first direction and the second direction intersect; When the first swing arm and the second swing arm rotate relative to the base, the moving rod moves along the first direction relative to the base, and the first limiting protrusion and the second limiting protrusion move synchronously in opposite directions.

2. The hinge mechanism according to claim 1, wherein: The first limiting protrusion is a first cylindrical protrusion, which is provided on the end surface of the first swing arm or the first end of the moving rod. The second limiting protrusion is a second cylindrical protrusion, which is provided on the end surface of the second swing arm or the second end of the moving rod. When the first swing arm and the second swing arm rotate relative to the base, the first cylindrical protrusion slides along the first sliding groove and the first cylindrical protrusion rotates relative to the first sliding groove, and the second cylindrical protrusion slides along the second sliding groove and the second cylindrical protrusion rotates relative to the second sliding groove.

3. The hinge mechanism according to claim 1, wherein: The first swing arm and the second swing arm both include a cylindrical portion, the cylindrical portion of the first swing arm is sleeved on the outside of the first rotating shaft, and the cylindrical portion of the second swing arm is sleeved on the outside of the second rotating shaft. The first limiting protrusion is arranged on the end surface of the barrel of the first swing arm, the first sliding groove is arranged on the first end of the moving rod, the second limiting protrusion is arranged on the end surface of the barrel of the second swing arm, the second sliding groove is arranged on the second end of the moving rod, and the second direction is parallel to the direction of the first rotating shaft pointing to the second rotating shaft.

4. The hinge mechanism according to claim 3, wherein: The distance between the first limiting protrusion and the first rotating shaft is a first distance, the distance between the second limiting protrusion and the second rotating shaft is a second distance, and the first distance is equal to the second distance.

5. The hinge mechanism according to claim 1, wherein: The first swing arm and the second swing arm both include a cylindrical portion, the cylindrical portion of the first swing arm is sleeved on the outside of the first rotating shaft, and the cylindrical portion of the second swing arm is sleeved on the outside of the second rotating shaft. The first limiting protrusion is provided on the first end of the moving rod, the first sliding groove is provided on the end surface of the cylindrical portion of the first swing arm, and the first sliding groove extends along the radial direction of the first rotating shaft; The second limiting protrusion is provided at the second end of the moving rod, the second sliding groove is provided at the end surface of the cylindrical portion of the second swing arm, and the second sliding groove extends along the radial direction of the second rotating shaft.

6. The hinge mechanism according to claim 1, wherein: A first limiting structure is provided at the end of the first limiting protrusion. The first limiting protrusion passes through the first sliding slot, and the first limiting structure cooperates with the first swing arm or the moving rod that defines the first sliding slot to limit the axial direction of the first rotating shaft. A second limiting structure is provided at the end of the second limiting protrusion, the second limiting protrusion passes through the second sliding slot, and the second limiting structure cooperates with the second swing arm or the moving rod that opens the second sliding slot in the axial limit position of the second rotating shaft.

7. The hinge mechanism according to claim 1, wherein: The hinge mechanism also includes a support rod and a sleeve, the support rod extends along the first direction, the end of the support rod is connected to the base, the sleeve is connected to the moving rod, and the sleeve is sleeved on the outside of the support rod, and the sleeve is slidably matched with the support rod.

8. The hinge mechanism according to claim 7, wherein: The hinge mechanism further includes a friction plate, which is arranged between the sleeve and the support rod.

9. The hinge mechanism according to claim 1, wherein: There are multiple moving rods, and the moving rods are arranged at intervals along the axial direction of the first rotating shaft.

10. The hinge mechanism according to claim 1, wherein: The first direction is perpendicular to the direction in which the first rotation axis is located, and the first direction is perpendicular to the direction in which the first rotation axis points to the second rotation axis.

11. An electronic device, characterized in that: comprising a first device body, a second device body, and the hinge mechanism according to any one of claims 1 to 10, wherein the first device body is connected to the second device body via the hinge mechanism; During the relative rotation of the first device body and the second device body, the electronic device switches between an unfolded state and a folded state.

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