Hinge mechanism and electronic device

Abstract

The utility model relates to the technical field of hinge equipment, and provides a hinge mechanism and electronic equipment, and the hinge mechanism comprises a rocker arm assembly, a rotating shaft assembly, a torsion part and a hydraulic damper. The rocker arm assembly comprises two rocker arms. The rotating shaft assembly comprises two rotating shafts arranged side by side, and the two rotating shafts are configured to be rotatably arranged on the base. The two rotating shafts are connected with the two rocker arms in a one-to-one correspondence mode. The torsion piece is arranged between the two rocker arms so as to drive the two rocker arms to be unfolded. The hydraulic damper is configured to be arranged on the base, and the at least one rotating shaft is connected with the hydraulic damper. According to the double-shaft hinge mechanism, the torsion piece is arranged between the two rocker arms to drive the two rocker arms to automatically unfold, and at least one rotating shaft is connected with the hydraulic damper to damp the rotating shafts and slow down the unfolding speed, so that the whole unfolding process is more stable, and anti-vibration to electronic equipment is not easy to generate.

Description

Technical Field

[0001] The utility model relates to the technical field of hinge equipment, in particular to a hinge mechanism and electronic equipment. Background Art

[0002] In related art, electronic devices with foldable functions (such as foldable phones or laptops) typically have an elastic structure, such as a torsion spring, between the two foldable parts to spring the two parts apart, enabling the foldable part to automatically unfold. However, the automatic unfolding process is relatively fast, and when the foldable part is unfolded to its maximum angle, it can easily cause a shock to the electronic device, affecting the user experience and potentially causing damage to the device. Utility Model Content

[0003] The utility model provides a hinge mechanism and an electronic device, which are used to solve the defect in the prior art that the folding part of the electronic device unfolds too quickly, which easily causes rebound shock to the electronic device.

[0004] In a first aspect, the present invention provides a hinge mechanism, comprising:

[0005] A rocker arm assembly, comprising two rocker arms;

[0006] The rotating shaft assembly includes two rotating shafts arranged side by side, the two rotating shafts being configured to be rotatably arranged on the base respectively; the two rotating shafts are connected to the two rocker arms in a one-to-one correspondence;

[0007] a torsion member, disposed between the two rocker arms to drive the two rocker arms to unfold;

[0008] A hydraulic damper is configured to be disposed on the base, and at least one of the rotating shafts is connected to the hydraulic damper.

[0009] According to the hinge mechanism of the present invention, the hydraulic damper has damping chambers corresponding to the two rotating shafts one by one, and a portion of each rotating shaft is provided with a damping structure and is rotatably inserted into the corresponding damping chamber.

[0010] According to the hinge mechanism of the present invention, it further comprises a synchronous gear set, and the two rocker arms are connected by transmission through the synchronous gear set so that the two rocker arms rotate synchronously in opposite directions.

[0011] According to the hinge mechanism of the present invention, each of the rotating shafts includes a first shaft body and a second shaft body connected to each other;

[0012] The two rocker arms are respectively arranged on the corresponding first shaft bodies, and the second shaft body is rotatably inserted in the damping cavity; the damping structure is arranged on the peripheral wall of the second shaft body.

[0013] According to the hinge mechanism of the present invention, the damping structure includes a groove or a protrusion extending along the axial direction of the second shaft.

[0014] According to the hinge mechanism of the present invention, the damping structure is a first groove, and the cavity wall of the damping cavity is provided with a second groove corresponding to the first groove. When the expansion angle of the two rocker arms is within a preset angle range, at least part of the first groove and the second groove are arranged relative to each other.

[0015] According to the hinge mechanism of the present invention, a plurality of the damping structures are provided, and the plurality of damping structures are sequentially spaced apart along the circumference of the second shaft.

[0016] According to the hinge mechanism of the present invention, it further includes an axle seat, which is configured to be arranged on the base;

[0017] The shaft seat is provided with shaft holes corresponding to the two rotating shafts one by one, and the two rotating shafts are rotatably inserted into the corresponding shaft holes respectively;

[0018] The end surface of the shaft seat abuts against the hydraulic damper to close the opening of the damping chamber.

[0019] According to the hinge mechanism of the present invention, it further includes a limiting assembly, which includes a fixing seat, an elastic member and a contact; at least one of the rocker arms is provided with a spiral groove;

[0020] The fixing seat is configured to be arranged on the base, the elastic member is retractably arranged along the axial direction of the rotating shaft, one end of the elastic member abuts against the fixing seat, and the other end abuts against the contact, so that the contact abuts against the groove edge of the spiral groove;

[0021] When the rotating shaft rotates, the contact slides along the extending direction of the groove edge, and the contact is controlled by the groove edge to move axially along the rotating shaft.

[0022] According to the hinge mechanism of the present invention, the groove edge includes a first groove edge and a second groove edge connected to each other, the first groove edge is arranged obliquely relative to the axial direction of the rotating shaft, and the second groove edge is arranged perpendicularly relative to the axial direction of the rotating shaft;

[0023] When the two rocker arms are unfolded to a maximum unfolding angle, the contact abuts against the second groove edge of the spiral groove.

[0024] According to the hinge mechanism of the present invention, the elastic member includes two springs;

[0025] The two rocker arms are both provided with the spiral groove, and the contacts and the spiral grooves are arranged in a one-to-one correspondence; the two springs are respectively sleeved on the two rotating shafts; and each spring abuts between the fixing seat and the contact.

[0026] In a second aspect, the present invention further provides an electronic device, comprising: a first display body, a second display body and a hinge mechanism as described in any one of the above items; the first display body and the second display body are respectively connected to the two rocker arms in a one-to-one correspondence.

[0027] The hinge mechanism of this utility model utilizes two side-by-side rotating shafts, each equipped with a rocker arm, to connect the two folding structures of the electronic device. This allows the two folding structures to rotate about the two rotating shafts, thereby achieving the desired unfolding or folding of the two folding structures. Furthermore, a torsion member is provided between the two rocker arms to drive the two rocker arms to unfold, thereby achieving the desired unfolding of the two folding structures. A hydraulic damper is connected to one of the rotating shafts, and the damping fluid in the hydraulic damper damps the rotating shaft, thereby controlling the unfolding speed of the two rocker arms and ensuring a more stable unfolding process.

[0028] From the above, it can be seen that the dual-axis hinge mechanism of the present invention sets a torsion piece between the two rocker arms to drive the two rocker arms to automatically unfold, and connects at least one rotating shaft and a hydraulic damper to generate damping on the rotating shaft, slowing down the unfolding speed, making the entire unfolding process more stable and not prone to rebound shock to electronic equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 This is one of the schematic diagrams of the hinge mechanism provided by the embodiment of the present utility model.

[0031] Figure 2 It is an exploded view of the hinge mechanism provided in an embodiment of the present utility model.

[0032] Figure 3 This is one of the schematic diagrams of the hydraulic damper provided in the embodiment of the present utility model.

[0033] Figure 4 This is the second schematic diagram of the hydraulic damper provided in the embodiment of the present utility model.

[0034] Figure 5This is a schematic diagram of the cooperation between the hydraulic damper and the second shaft provided in another embodiment of the present invention.

[0035] Figure 6 It is a cross-sectional view of various second shafts provided by embodiments of the present utility model.

[0036] Figure 7 This is the second schematic diagram of the hinge mechanism provided in the embodiment of the present utility model.

[0037] Figure 8 This is the third schematic diagram of the hinge mechanism provided in the embodiment of the present utility model.

[0038] Figure 9 This is one of the schematic diagrams of the electronic device provided by the embodiment of the present utility model.

[0039] Figure 10 This is the second schematic diagram of the electronic device provided by the embodiment of the present utility model.

[0040] Reference numerals:

[0041] 1. Hinge mechanism;

[0042] 11. Rocker arm assembly; 111. Rocker arm;

[0043] 12. Rotating shaft assembly; 121. Rotating shaft; 1211. Damping structure; 1212. First shaft; 1213. Second shaft;

[0044] 13. Torque parts;

[0045] 14. Hydraulic damper; 141. Damping chamber; 1411. Second groove;

[0046] 15. Synchronous gear set; 16. Shaft seat;

[0047] 17. Limiting assembly; 171. Fixing seat; 172. Elastic member; 173. Contact;

[0048] 2. Electronic device; 21. First display body; 22. Second display body. DETAILED DESCRIPTION

[0049] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0050] The following combination Figures 1-8The hinge mechanism of the present invention is described.

[0051] like Figure 1 、 Figure 2 、 Figure 7 and Figure 8 The present invention provides a hinge mechanism 1, comprising: a rocker arm assembly 11, a rotating shaft assembly 12, a torsion member 13, and a hydraulic damper 14. The rocker arm assembly 11 includes two rocker arms 111. The rotating shaft assembly 12 includes two rotating shafts 121 arranged side by side, and the two rotating shafts 121 are configured to be rotatably disposed on a base 2. The two rotating shafts 121 are connected to the two rocker arms 111 in a one-to-one correspondence. The torsion member 13 is disposed between the two rocker arms 111 to drive the two rocker arms 111 to expand. The hydraulic damper 14 is configured to be disposed on the base, and at least one rotating shaft 121 is connected to the hydraulic damper 14.

[0052] In this embodiment, it can be understood that the base is a shell structure for installing and fixing the dual-axis hinge mechanism 1 on the electronic device. Two rotating shafts 121 arranged side by side are rotatably provided on the base, and a rocker arm 111 is connected to each of the two rotating shafts 121. The two rocker arms 111 are respectively used to connect with the two folding structures of the electronic device. The two rotating shafts 121 can drive the two folding structures to rotate respectively to adjust the unfolding angle of the two folding mechanisms, thereby realizing the folding or unfolding function of the electronic device.

[0053] It is understandable that the folding structure can be the main screen, secondary screen of an electronic device, the screen side or host side of a laptop computer, etc.

[0054] At the same time, by disposing a torsion member 13 between the two rocker arms 111, the torsion member 13 can be connected to at least one rocker arm 111. When the two rocker arms 111 approach each other, the torsion member 13 is squeezed and twisted. When the two rocker arms 111 are released, the torsion member 13 can drive the two rocker arms 111 away from each other to unfold, thereby driving the two folding structures of the electronic device to unfold to a set angle. It is understood that the torsion member 13 can also be connected to both rocker arms 111 to synchronously drive the two rocker arms 111 to rotate and unfold in both directions.

[0055] In addition, by providing a hydraulic damper 14 connected to at least one of the rotating shafts 121, the damping fluid within the hydraulic damper 14 will generate damping for the rotating shaft 121 when the rotating shaft 121 rotates, thereby reducing the torque applied to the rotating shaft 121, thereby controlling the acceleration of the rotating shaft 121 and, in turn, the rotational speed of the rocker arms 111 on the rotating shaft 121, thereby controlling the deployment speed of the two rocker arms 111, making the entire deployment process more stable and smooth, and less likely to produce backlash. It is understood that the hydraulic damper 14 can also be connected to both rotating shafts 121 simultaneously to generate damping for both rotating shafts 121.

[0056] The hinge mechanism 1 of the present invention connects the two folding structures of the electronic device by arranging two rotating shafts 121 side by side, each of which is provided with a rocker arm 111. This allows the two folding structures to rotate about the two rotating shafts 121, thereby achieving the expansion or folding of the two folding structures. Simultaneously, a torsion member 13 is provided between the two rocker arms 111 to drive the two rocker arms 111 to expand, thereby achieving the expansion of the two folding structures. A hydraulic damper 14 is provided in connection with one of the rotating shafts 121. The damping fluid in the hydraulic damper 14 can damp the rotating shaft 121, thereby controlling the expansion speed of the two rocker arms 111 and making the entire expansion process more stable.

[0057] As can be seen from the above, the dual-axis hinge mechanism 1 of the present invention sets a torsion piece 13 between the two rocker arms 111 to drive the two rocker arms 111 to automatically unfold, and connects at least one rotating shaft 121 and a hydraulic damper 14 to generate damping on the rotating shaft 121, slowing down the unfolding speed, making the entire unfolding process more stable, and not easily causing rebound shock to the electronic equipment.

[0058] Specifically, in some embodiments, Figure 2 、 Figure 3 and Figure 4 As shown, the hydraulic damper 14 has damping chambers 141 corresponding to the two rotating shafts 121 one by one. A portion of each rotating shaft 121 is provided with a damping structure 1211 and is rotatably inserted into the corresponding damping chamber 141 .

[0059] In this embodiment, the hydraulic damper 14 is provided with two damping chambers 141 . It is understandable that the damping chambers 141 are filled with damping fluid (such as grease), and the parts of the two rotating shafts 121 provided with the damping structures 1211 are respectively inserted into the two damping chambers 141 . When the two rotating shafts 121 rotate under the drive of the torsion piece 13, the part of the rotating shaft 121 inserted in the damping chamber 141 and the damping structure 1211 stir the damping fluid. The damping fluid has a large viscosity and produces damping on the rotating shaft 121. The damping increases with the increase of the rotation speed of the rotating shaft 121 and decreases with the decrease of the rotation speed, so as to better control the rotation speed, reduce the speed change of the rotating shaft 121 during rotation, make the rotation of the rotating shaft 121 smoother, make the entire deployment process more stable, and not easily produce backshock to the electronic equipment; in addition, by inserting both rotating shafts 121 into the damping chamber 141, so as to produce damping on both rotating shafts 121, it is beneficial to keep the rotation speed of the two rotating shafts 121 consistent, and make the deployment process more stable.

[0060] Furthermore, in some embodiments, Figure 1 and Figure 2As shown, the hinge mechanism 1 further includes a synchronous gear set 15 , and the two rocker arms 111 are connected by the synchronous gear set 15 so that the two rocker arms 111 rotate synchronously in opposite directions.

[0061] In this embodiment, a synchronous gear set 15 is provided between the two rocker arms 111 for transmission, so that the rotation speed of the two rocker arms 111 can be kept consistent during the deployment process. Accordingly, the rotation speed of the two rotating shafts 121 is also kept consistent, and the damping of the two rotating shafts 121 is also kept consistent, which is conducive to making the entire deployment process more stable.

[0062] In some embodiments, as Figure 2 、 Figure 5 and Figure 6 As shown, each rotating shaft 121 includes a first shaft body 1212 and a second shaft body 1213. The two rocker arms 111 are respectively disposed on the corresponding first shaft body 1212, and the second shaft body 1213 is rotatably inserted into the damping cavity 141; the damping structure 1211 is disposed on the peripheral wall of the second shaft body 1213.

[0063] In this embodiment, the rotating shaft 121 is divided into a first shaft body 1212 and a second shaft body 1213 which are connected to each other. The first shaft body 1212 is used to set the rocker arm 111, and the second shaft body 1213 is used to set the damping structure 1211, so that the second shaft body 1213 can be inserted into the damping cavity 141. The outer wall of the second shaft body 1213 and the damping structure 1211 are in contact with the damping fluid in the damping cavity 141. When the second shaft body 1213 rotates, the damping fluid generates damping on the second shaft body 1213, so as to control the rotation speed of the rotating shaft 121.

[0064] Optionally, in some embodiments, Figure 2 As shown, the radius of the second shaft body 1213 is greater than the radius of the first shaft body 1212, so that the second shaft body 1213 has a larger surface area, thereby increasing the contact area between the second shaft body 1213 and the damping fluid.

[0065] In some embodiments, the damping structure 1211 includes a groove or a protrusion extending along the axial direction of the second shaft 1213 .

[0066] In this embodiment, the damping structure 1211 can be a groove or a protrusion. The groove or protrusion structure can effectively increase the contact area between the second shaft 1213 and the damping fluid. It can be understood that the larger the contact area, the greater the damping of the damping fluid on the second shaft 1213.

[0067] It is understandable that the cross-sectional characteristics of the second shaft 1213 and the damping structure 1211 can be matched and designed according to the torque value of the torque member 13, so that the rotating shaft 121 can rotate at a near uniform speed during the rotation process, thereby reducing the speed fluctuation and reducing the rebound shock to the electronic device itself.

[0068] In some embodiments, as Figure 2 and Figure 5 As shown, the damping structure 1211 is a first groove, and the cavity wall of the damping cavity 141 is provided with a second groove 1411 corresponding to the first groove. When the expansion angle of the two rocker arms 111 is within the preset angle range, at least part of the first groove and the second groove 1411 are arranged relative to each other.

[0069] In this embodiment, by respectively arranging the first groove and the second groove 1411 on the wall of the second shaft body 1213 and the damping chamber 141, the relative positions of the first groove and the second groove 1411 will change as the second shaft body 1213 rotates. When the first groove and the second groove 1411 are staggered with each other, the damping of the damping fluid in the hydraulic chamber to the second shaft body 1213 is greater. When a part or the whole of the first groove and the second groove 1411 are arranged relative to each other, a larger space can be formed between the first groove and the second groove 1411 to accommodate the damping fluid, so that the damping fluid in the space has less damping on the second shaft body 1213, thereby making the damping of the second shaft body 1213 as a whole less by the damping fluid in the hydraulic chamber. By properly arranging the relative positions of the first and second grooves 1411, at least a portion of the first groove and the second groove 1411 can be aligned when the two rocker arms 111 are deployed to a specific angle (i.e., within a preset angle range). This reduces the hydraulic damping experienced by the two rocker arms 111 within this preset angle range, enabling the two rocker arms 111 to achieve a faster deployment speed when deployed within this preset angle range. As can be seen from the above, by properly arranging the number and position of the first and second grooves 1411, the deployment speed of the two rocker arms 111 when deployed to different angles can be further controlled, enabling more precise control of the deployment speed of the two rocker arms 111.

[0070] In a specific embodiment, the maximum range of the two rocker arms 111 is 0° to 120°. When the two rocker arms 111 are expanded from 0° to 40°, the first groove and the second groove 1411 remain staggered, the damping of the two rocker arms 111 is large, and the expansion speed is slow; when the two rocker arms 111 are expanded from 40° to 80°, the first groove gradually enters the range directly opposite the notch of the second groove 1411, and the damping of the two rocker arms 111 begins to decrease, and the expansion speed is fast; when the two rocker arms 111 are expanded from 80° to 120°, the first groove gradually leaves the range directly opposite the notch of the second groove 1411, until the first groove and the second groove 1411 are staggered again, the damping of the two rocker arms 111 increases again, and the expansion speed is slow, thereby realizing an expansion process in which the change trend of the expansion speed is "slow-fast-slow".

[0071] In some embodiments, as Figure 6As shown, a plurality of damping structures 1211 are provided, and the plurality of damping structures 1211 are sequentially arranged at intervals along the circumference of the second shaft 1213 .

[0072] In this embodiment, by arranging multiple damping structures 1211 at circumferential intervals along the second shaft body 1213, the damping structure 1211 can increase the contact area between the second shaft body 1213 and the damping fluid. At the same time, the multiple damping structures 1211 arranged along the circumference can make the damping at various positions of the second shaft body 1213 more uniform and the rotation more stable.

[0073] like Figure 6 As shown, the damping structure 1211 can be an arc-shaped groove or a V-shaped groove.

[0074] In some embodiments, as Figure 1 and Figure 2 As shown, the hinge mechanism 1 further includes a shaft seat 16, which is configured to be mounted on the base. The shaft seat 16 has shaft holes corresponding to the two rotating shafts 121. The two rotating shafts 121 are rotatably inserted into the corresponding shaft holes. The end surface of the shaft seat 16 abuts the hydraulic damper 14 to seal the opening of the damping chamber 141.

[0075] In this embodiment, the shaft seat 16 is mounted on the base. The shaft seat 16 is provided with shaft holes for inserting two rotating shafts 121, thereby fixing the positions of the rotating shafts 121 and enabling the rotating shafts 121 to rotate. The end surface of the shaft seat 16 abuts against the hydraulic damper 14 and blocks the opening of the damping chamber 141, preventing leakage of the damping fluid. The structure is simple, convenient, and practical.

[0076] In some embodiments, as Figure 1 and Figure 2 As shown, the hinge mechanism 1 further includes a limit assembly 17, which includes a fixed seat 171, an elastic member 172, and a contact 173. At least one rocker arm 111 is provided with a spiral groove. The fixed seat 171 is configured to be mounted on the base, and the elastic member 172 is retractable along the axial direction of the rotating shaft 121. One end of the elastic member 172 abuts the fixed seat 171, and the other end abuts the contact 173, so that the contact 173 abuts the edge of the spiral groove. When the rotating shaft 121 rotates, the contact 173 slides along the extension direction of the groove edge, and the groove edge controls the axial movement of the contact 173 along the rotating shaft 121.

[0077] In this embodiment, a fixing seat 171 is mounted on the base to provide a fixed support point. One end of the elastic member 172 abuts the fixing seat 171, and the other end abuts the contact 173, pressing the contact 173 against the edge of the spiral groove. When the shaft 121 rotates to drive the rocker 111 to expand, the contact 173 and the elastic member 172 do not rotate synchronously. The contact 173 moves along the edge of the spiral groove during rotation, thereby moving axially along the shaft 121, thereby changing the compression of the elastic member 172. The elastic force generated by the compression of the elastic member 172 acts on the rocker 111 through the contact 173, generating resistance to the rocker 111. The resistance generated by the limit assembly 17 varies with the expansion angle of the rocker 111. By properly configuring the shape and size of the contact 173 and the spiral groove, the resistance of the limit assembly 17 can prevent the rocker 111 from further expansion or rebounding after expansion to a specific angle, thereby achieving a limit function. The structure is simple, convenient and practical.

[0078] Specifically, in some embodiments, the groove edge includes a first groove edge and a second groove edge that are connected, wherein the first groove edge is arranged obliquely relative to the axial direction of the rotating shaft 121, and the second groove edge is arranged perpendicular to the axial direction of the rotating shaft 121. When the two rocker arms 111 are extended to the maximum extension angle, the contact 173 abuts against the second groove edge of the spiral groove.

[0079] In this embodiment, the slot edge is divided into a first slot edge that is inclined relative to the axial direction of the rotating shaft 121 and a second slot edge that is perpendicular to the axial direction of the rotating shaft 121. When the contact 173 is located at the first slot edge, the pressure of the elastic member 172 on the contact 173 in the direction parallel to the first slot edge will drive the contact 173 to continue to move toward the second slot edge; when the contact 173 reaches the second slot edge and abuts against the second slot edge, the pressure of the elastic member 172 on the contact 173 will be offset by the reaction force of the second slot edge on the contact 173, and the contact 173 will be limited by the first slot edge on the side and remain at the position of the second slot edge, so that the rocker arm 111 will no longer continue to rotate, and the two rocker arms 111 will be limited to the maximum expansion angle.

[0080] In some embodiments, there are two first groove edges, and the two first groove edges are respectively connected to two ends of the second groove edge and are arranged opposite to each other.

[0081] In some embodiments, as Figure 1 and Figure 2 As shown, the elastic member 172 includes two springs. Both rocker arms 111 are provided with spiral grooves, with contacts 173 corresponding to the spiral grooves. The two springs are respectively mounted on the two rotating shafts 121; each spring abuts between the fixed seat 171 and the contact 173.

[0082] In this embodiment, by providing spiral grooves on both rocker arms 111, and arranging the contacts 173 and the spiral grooves in one-to-one correspondence, and providing a spring on each of the two rotating shafts 121, the forces acting on the two rocker arms 111 can be kept basically consistent, so that the force on the entire structure is more uniform when unfolded, and the unfolding process is more stable and reliable.

[0083] On the other hand, Figure 9 and Figure 10 As shown, the present invention further provides an electronic device 2, comprising: a first display body 21, a second display body 22 and a hinge mechanism 1 as provided in any of the above embodiments. The first display body 21 and the second display body 22 are respectively connected to two rocker arms 111 in a one-to-one correspondence.

[0084] The electronic device 2 of the present invention, by adopting the hinge mechanism 1 of any of the above embodiments, also has the advantages of the above hinge mechanism 1, which will not be described in detail here.

[0085] It can be understood that the first display body 21 and the second display body 22 of this embodiment can both be used to set functional devices such as display screens and buttons. The first display body 21 and the second display body 22 are respectively connected to the two rocker arms 111 one by one so as to unfold or fold as the two rocker arms 111 rotate relative to each other.

[0086] It is understandable that the electronic devices of the present invention include but are not limited to foldable screen mobile phones, laptops, translation machines and other devices.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A hinge mechanism, characterized in that: include: A rocker arm assembly, comprising two rocker arms; The rotating shaft assembly includes two rotating shafts arranged side by side, the two rotating shafts being configured to be rotatably arranged on the base respectively; the two rotating shafts are connected to the two rocker arms in a one-to-one correspondence; a torsion member, disposed between the two rocker arms to drive the two rocker arms to unfold; A hydraulic damper is configured to be disposed on the base, and at least one of the rotating shafts is connected to the hydraulic damper.

2. The hinge mechanism according to claim 1, wherein: The hydraulic damper has a damping cavity corresponding to the two rotating shafts one by one, and a portion of each rotating shaft is provided with a damping structure and is rotatably inserted into the corresponding damping cavity.

3. The hinge mechanism according to claim 2, wherein: It also includes a synchronous gear set, and the two rocker arms are connected by transmission through the synchronous gear set so that the two rocker arms rotate synchronously in opposite directions.

4. The hinge mechanism according to claim 2, wherein: Each of the rotating shafts includes a first shaft body and a second shaft body connected to each other; The two rocker arms are respectively arranged on the corresponding first shaft bodies, and the second shaft body is rotatably inserted in the damping cavity; the damping structure is arranged on the peripheral wall of the second shaft body.

5. The hinge mechanism according to claim 4, characterized in that: The damping structure includes a groove or a protrusion extending along the axial direction of the second shaft.

6. The hinge mechanism according to claim 4, wherein: The damping structure is a first groove, and the cavity wall of the damping cavity is provided with a second groove corresponding to the first groove. When the expansion angle of the two rocker arms is within a preset angle range, at least part of the first groove and the second groove are arranged relative to each other.

7. The hinge mechanism according to claim 4, characterized in that: There are multiple damping structures, and the multiple damping structures are arranged in sequence and at intervals along the circumference of the second shaft.

8. The hinge mechanism according to claim 2, wherein: Also included is an axle seat, the axle seat being configured to be disposed on the base; The shaft seat is provided with shaft holes corresponding to the two rotating shafts one by one, and the two rotating shafts are rotatably inserted into the corresponding shaft holes respectively; The end surface of the shaft seat abuts against the hydraulic damper to close the opening of the damping chamber.

9. The hinge mechanism according to any one of claims 1 to 8, characterized in that: It also includes a limiting assembly, which includes a fixing seat, an elastic member and a contact; at least one of the rocker arms is provided with a spiral groove; The fixing seat is configured to be arranged on the base, the elastic member is retractably arranged along the axial direction of the rotating shaft, one end of the elastic member abuts against the fixing seat, and the other end abuts against the contact, so that the contact abuts against the groove edge of the spiral groove; When the rotating shaft rotates, the contact slides along the extending direction of the groove edge, and the contact is controlled by the groove edge to move axially along the rotating shaft.

10. The hinge mechanism according to claim 9, characterized in that: The groove edge includes a first groove edge and a second groove edge connected to each other, wherein the first groove edge is arranged obliquely relative to the axial direction of the rotating shaft, and the second groove edge is arranged perpendicularly relative to the axial direction of the rotating shaft; When the two rocker arms are unfolded to a maximum unfolding angle, the contact abuts against the second groove edge of the spiral groove.

11. The hinge mechanism according to claim 9, wherein: The elastic member includes two springs; The two rocker arms are both provided with the spiral groove, and the contacts and the spiral grooves are arranged in a one-to-one correspondence; the two springs are respectively sleeved on the two rotating shafts; and each spring abuts between the fixing seat and the contact.

12. An electronic device, characterized in that: include: A first display body, a second display body and a hinge mechanism as described in any one of claims 1 to 11; the first display body and the second display body are respectively connected to the two rocker arms in a one-to-one correspondence.

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