Inward-folding flexible screen rotating shaft device

Abstract

The invention relates to the technical field of infolding flexible screen rotating shafts, and discloses an infolding flexible screen rotating shaft device which comprises a floating plate assembly, two rotating shaft assemblies and two self-locking assemblies, the two rotating shaft assemblies and the floating plate assembly are arranged in an assembled mode, and the floating plate assembly and a flexible screen are arranged in an assembled mode; the rotating shaft assembly comprises a rotating assembly, a rotating and sliding assembly, a pin assembly, a synchronizing part and a connecting assembly, the rotating assembly is used for driving the synchronizing part to move axially and driving the connecting assembly to rotate, the connecting assembly is used for driving the rotating and sliding assembly to rotate, and the synchronizing part is used for driving the rotating and sliding assembly to move axially. The rotating and sliding assembly axially moves to drive the connecting assembly to axially move, and the connecting assembly is used for driving the floating plate assembly to rotate; the self-locking assembly is used for generating self-locking torque and applying the self-locking torque to the self-locking assembly. In the same screen containing space, the space needed by the rotating shaft device is smaller, the unfolding thickness and the folding thickness are smaller, the structure is stable, the rotating clearance is smaller, and the experience feeling of the whole machine is improved.

Description

Technical Field

[0001] The patent of this invention relates to the technical field of the inward-folding flexible screen hinge, and specifically, to an inward-folding flexible screen hinge device. Background Art

[0002] A foldable screen mobile phone is a mobile phone with a foldable screen. After the screen is folded, it can be used as a mobile phone just like our current straight-screen mobile phones. When needed, we can open the screen, so that it becomes a tablet computer. Different modes can be used in different scenarios. The folding methods of foldable screen mobile phones are divided into up and down folding and left and right folding. The left and right folding is further divided into inward folding and outward folding.

[0003] The hinge device is a structure for the flexible screen to realize the folding function. For example, the prior patent with the authorization announcement number CN219953939U discloses a hinge of an inward-folding flexible screen mobile terminal, including a base, a torque synchronization mechanism, a left connecting seat, a right connecting seat, a left rotating arm and a right rotating arm. The left rotating arm and the right rotating arm are rotatably connected to the base respectively. The torque synchronization mechanism includes at least a left gear, a right gear and a torque assembly that cooperates with the left gear and the right gear. The left connecting seat is provided with a first limit sleeve that cooperates with the first sliding arm of the left gear and a first sliding groove that cooperates with the first limit sleeve. The right connecting seat is provided with a second limit sleeve that cooperates with the second sliding arm of the right gear and a second sliding groove that cooperates with the second limit sleeve.

[0004] In the prior art, the space required for the shaft device is relatively large, which affects the user experience of the entire machine. Summary of the invention

[0005] The purpose of the present invention is to provide an inward-folding flexible screen hinge device, aiming to solve the problem in the prior art that the hinge device requires a large space.

[0006] The present invention is achieved in that an inwardly folded flexible screen rotating shaft device comprises a floating plate assembly, two rotating shaft assemblies and two self-locking assemblies, the two rotating shaft assemblies are arranged correspondingly at two ends, and the two rotating shaft assemblies are respectively assembled with the floating plate assemblies, and the floating plate assembly is assembled with the flexible screen; the rotating shaft assembly comprises a rotating component, a sliding component, a pin assembly, a synchronous member and a connecting component, the synchronous member and the pin assembly are movably assembled, the rotating component and the synchronous member are movably assembled, and the rotating component is used to drive the synchronous member to move axially and drive the connecting component to rotate, the sliding component and the synchronous member are assembled, the connecting component is used to drive the sliding component to rotate, the synchronous member is used to drive the sliding component to move axially, the sliding component drives the connecting component to move axially, and the connecting component is used to drive the floating plate assembly to rotate; the self-locking assembly is used to generate a self-locking torque and apply it to the self-locking assembly.

[0007] Furthermore, the pin assembly includes two pin shafts, and the two pin shafts are arranged at intervals and correspondence along the radial direction, and the two pin shafts synchronously penetrate the synchronous member, and the rotating assembly includes a first rotating member and a second rotating member, and the two pin shafts respectively penetrate the first rotating member and the second rotating member; the first rotating member has a first rotating groove, and the second rotating member has a second rotating groove, and the first rotating groove and the second rotating groove are respectively arranged in a spiral shape, and sliding bars are respectively formed on both sides of the synchronous member, and the sliding bars are convexly arranged, and the two sliding bars are respectively embedded in the first rotating groove and the second rotating groove, and when the synchronous member moves axially, it drives the first rotating member and the second rotating member to rotate synchronously.

[0008] Furthermore, the connecting assembly includes two connecting plates, and the two connecting plates are respectively assembled with the first rotating member and the second rotating member, the connecting plates have connecting plate grooves, the first rotating member has a first outer rotating plate, and the second rotating member has a second outer rotating plate, the first outer rotating plate and the second outer rotating plate are arranged to rotate synchronously, the first outer rotating plate and the second outer rotating plate are respectively embedded with the two connecting plates, and the first outer rotating plate and the second outer rotating plate are used to synchronously drive the two connecting plates to rotate.

[0009] Furthermore, the connecting plate has an inner plate groove, the rotating slide assembly includes a first rotating slide and a second rotating slide, the first rotating slide includes a first rotating slide sheet, the second rotating slide includes a second rotating slide sheet, the first rotating slide sheet and the second rotating slide sheet are respectively embedded in the inner plate grooves of the two connecting plates; when the two connecting plates rotate synchronously, the first rotating slide sheet and the second rotating slide sheet are synchronously driven to be arranged in rotation, and when the synchronous parts move axially, they synchronously drive the first rotating slide sheet and the second rotating slide sheet to move axially.

[0010] Furthermore, the connecting plate has a pin slide groove, the cross-section of the pin slide groove is long and strip-shaped and is arranged to extend obliquely, and the pin slide groove is connected to the inner plate groove; the connecting component includes two positioning pins, the two positioning pins are in one-to-one correspondence with the two connecting plates and are arranged in a butt joint, and the two positioning pins respectively penetrate the first rotating slide and the second rotating slide and extend to be embedded in the pin slide groove; when the first rotating slide or the second rotating slide moves axially, the connecting plate is driven to move axially.

[0011] Furthermore, the floating plate assembly includes two side floating plates, and the two side floating plates are in one-to-one correspondence and assembly arrangement with the two connecting plates. The side floating plate has a floating plate portion, and the connecting plate has a floating slide groove, and the floating slide groove is arranged in an arc shape. The floating plate portion is embedded with the floating slide groove, and when the connecting plate rotates, the side floating plate is driven to be arranged in a rotating manner.

[0012] Furthermore, the side floating plate has a rotation block, and along the length direction, the floating plate and the rotation block are arranged in intervals and correspondence; the first outer rotation plate includes two first outer plate strips and two first outer plate columns, the two first outer plate strips are arranged at an interval bottom, the first outer plate column is connected to the first outer plate strip, and the two first outer plate columns are extended in opposite directions, the rotation block is located between the two first outer plate strips, and rotation grooves are respectively formed on both sides of the rotation block, the rotation grooves are arranged in an arc shape, and the two first outer plate columns are respectively embedded with two of the rotation grooves.

[0013] Furthermore, the self-locking assembly includes two self-locking springs, a cam plate, a bayonet plate and a buckle assembly. The bayonet plate and the buckle assembly are respectively fixedly arranged, and the two ends of the pin shaft are respectively assembled with the bayonet plate and the buckle assembly. The two self-locking springs are respectively sleeved with two pin shafts, and the two ends of the self-locking springs are respectively docked with the cam plate and the buckle assembly; the cam plate has two cam parts, and the two cam parts are respectively meshed with the first rotating member and the second rotating member.

[0014] Furthermore, the self-locking assembly includes a center lock spring, the cam plate has a cam column, the cam column is extended toward the buckle assembly, and the cam column is embedded in the center lock spring; the center lock spring is located between the two self-locking springs, and the two ends of the center lock spring are respectively docked with the cam plate and the buckle assembly; the buckle assembly includes a buckle plate and a baffle, the buckle plate and the baffle are assembled in an overlapping manner, the buckle plate is fixedly arranged, and the baffle is used to dock with the self-locking spring and the center lock spring.

[0015] Furthermore, the inward-folding flexible screen shaft device includes a shaft cover, the floating plate assembly includes a middle floating plate, and the shaft cover and the middle floating plate are arranged in a superimposed assembly; the shaft cover has a fixed column and a fixed column, the fixed column is embedded in and fixes the bayonet plate or the buckle assembly, the synchronous component has a center groove, the center groove is vertically extended along the axial direction, the fixed column is embedded in the center groove, and the fixed column is used to position the synchronous component.

[0016] Compared with the prior art, the inward-folding flexible screen hinge device provided by the present invention requires less space for the hinge than other traditional hinges within the same screen space. This is mainly reflected in the thinner thickness in the unfolded state and the folded state, and the structure is stable, with smaller rotational voids, thereby improving the overall user experience of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an exploded schematic diagram of the inward folding flexible screen rotating shaft device provided by the present invention; Figure 2 It is a three-dimensional schematic diagram of the rotating shaft assembly of the inward folding flexible screen rotating shaft device provided by the present invention; Figure 3 It is an exploded schematic diagram of the shaft assembly of the inward folding flexible screen shaft device provided by the present invention; Figure 4 It is a three-dimensional schematic diagram of the first rotating member of the inward folding flexible screen rotating shaft device provided by the present invention; Figure 5 It is a three-dimensional schematic diagram of the synchronization component of the inward folding flexible screen rotating shaft device provided by the present invention; Figure 6 It is a partially enlarged schematic diagram of the inward folding flexible screen rotating shaft device provided by the present invention; Figure 7 It is a three-dimensional schematic diagram of the side floating plate of the inward folding flexible screen rotating shaft device provided by the present invention; Figure 8 It is a three-dimensional schematic diagram of the connecting plate of the inward folding flexible screen rotating shaft device provided by the present invention; Fig. 9 It is a three-dimensional schematic diagram of the self-locking assembly of the inward folding flexible screen shaft device provided by the present invention; Fig.10 It is a three-dimensional schematic diagram of the inward folding flexible screen rotating shaft device provided by the present invention in an unfolded state; Fig.11 It is a three-dimensional schematic diagram of the inward-folding flexible screen hinge device provided by the present invention in a folded state. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0020] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0021] Reference Figure 1-11 The figure shows a preferred embodiment of the present invention.

[0022] The inward-folding flexible screen shaft device includes a floating plate assembly 2, two shaft assemblies 1 and two self-locking assemblies 3. The two shaft assemblies 1 are arranged correspondingly at both ends, and the two shaft assemblies 1 are respectively assembled with the floating plate assembly 2, and the floating plate assembly 2 is assembled with the flexible screen; the shaft assembly 1 includes a rotating component, a sliding component, a pin assembly 15, a synchronous member 16 and a connecting component. The synchronous member 16 and the pin assembly 15 are movably assembled, the rotating component and the synchronous member 16 are movably assembled, and the rotating component is used to drive the synchronous member 16 to move axially and drive the connecting component to rotate, the sliding component and the synchronous member 16 are assembled, the connecting component is used to drive the sliding component to rotate, the synchronous member 16 is used to drive the sliding component to move axially, the sliding component moves axially and drives the connecting component to move axially, and the connecting component is used to drive the floating plate assembly 2 to rotate; the self-locking assembly 3 is used to generate a self-locking torque and apply it to the self-locking assembly 3.

[0023] The above-mentioned inward-folding flexible screen hinge device requires less space for the hinge than other traditional hinges within the same screen space. This is mainly reflected in the thinner thickness in the unfolded state and the folded state, and the structure is stable, with smaller rotation voids, which improves the overall experience of the device.

[0024] The pin assembly 15 includes two pin shafts 151, which are arranged at intervals and correspondence along the radial direction, and the two pin shafts 151 synchronously penetrate the synchronous member 16. The rotating assembly includes a first rotating member 11 and a second rotating member 12, and the two pin shafts 151 penetrate the first rotating member 11 and the second rotating member 12 respectively; the first rotating member 11 has a first rotating groove 111, and the second rotating member 12 has a second rotating groove, and the first rotating groove 111 and the second rotating groove are respectively arranged in a spiral shape. Slide bars 161 are respectively formed on both sides of the synchronous member 16, and the slide bars 161 are convexly arranged. The two slide bars 161 are respectively embedded in the first rotating groove 111 and the second rotating groove. When the synchronous member 16 moves axially, it drives the first rotating member 11 and the second rotating member 12 to rotate synchronously.

[0025] Under the action of the two pins 151, the movement stability of the synchronizer 16 is improved. At the same time, the pin 151 realizes the assembly of the rotating assembly, the rotating sliding assembly and the cam plate 32. Furthermore, when the rotating assembly rotates, under the action of the first rotating slide groove 111 and the second rotating slide groove, the synchronizer 16 is driven to move axially. When the synchronizer 16 moves axially, the first rotating member 11 and the second rotating member 12 are synchronously rotated through the cooperation of the first rotating slide groove 111 and the second rotating slide groove.

[0026] The connecting assembly includes two connecting plates 17, and the two connecting plates 17 are respectively assembled with the first rotating member 11 and the second rotating member 12, and the connecting plates 17 have connecting plate grooves 174. The first rotating member 11 has a first outer rotating plate, and the second rotating member 12 has a second outer rotating plate. The first outer rotating plate and the second outer rotating plate are arranged to rotate synchronously. The first outer rotating plate and the second outer rotating plate are respectively embedded with two connecting plate grooves 174, and the first outer rotating plate and the second outer rotating plate are respectively embedded with the two connecting plates 17, and the first outer rotating plate and the second outer rotating plate are used to synchronously drive the two connecting plates 17 to rotate.

[0027] In this way, the synchronous rotation of the first rotating member 11 and the second rotating member 12 drives the two connecting plates 17 to rotate synchronously, and the rotation of the two connecting plates 17 drives the first rotating slide 13 and the second rotating slide 14 to rotate synchronously.

[0028] The connecting plate 17 has an inner plate groove 171, and the sliding assembly includes a first sliding member 13 and a second sliding member 14. The first sliding member 13 includes a first sliding plate 131, and the second sliding member 14 includes a second sliding plate 141. The first sliding plate 131 and the second sliding plate 141 are respectively embedded in the inner plate grooves 171 of the two connecting plates 17; when the two connecting plates 17 rotate synchronously, they synchronously drive the first sliding member 13 and the second sliding member 14 to be arranged in rotation, and when the synchronous member 16 moves axially, it synchronously drives the first sliding member 13 and the second sliding member 14 to move axially.

[0029] In this way, under the cooperation of the inner plate groove 171 and the first rotating slide 131 and the second rotating slide 141, the connecting plate 17 drives the first rotating slide 13 and the second rotating slide 14 to rotate synchronously. At the same time, the axial displacement of the synchronous member 16 drives the first rotating slide 13 and the second rotating slide 14 to move axially synchronously.

[0030] The connecting plate 17 has a pin slot 172, the cross-section of which is long and obliquely extended, and the pin slot 172 is connected to the inner plate slot 171; the connecting component includes two locating pins 18, the two locating pins 18 are in one-to-one correspondence with the two connecting plates 17 and are butt-connected, and the two locating pins 18 respectively penetrate the first rotating slide 131 and the second rotating slide 141 and extend to be embedded in the pin slot 172; when the first rotating slide 13 or the second rotating slide 14 moves axially, the connecting plate 17 is driven to move axially.

[0031] In this way, when the first rotating slide 13 and the second rotating slide 14 are axially displaced, the cooperation between the positioning pin 18 and the pin sliding groove 172 drives the receiving plate to move axially.

[0032] The floating plate assembly 2 includes two side floating plates 21, and the two side floating plates 21 correspond to the two connecting plates 17 one by one and are assembled and arranged. The side floating plate 21 has a floating plate 212, and the connecting plate 17 has a floating slide groove 173, which is arranged in an arc shape. The floating plate 212 is embedded with the floating slide groove 173. When the connecting plate 17 rotates, the side floating plate 21 is driven to be arranged in a rotating manner.

[0033] In this way, the side floating plate 21 can rotate through the cooperation between the floating slide groove 173 and the floating plate 212, and can switch between 90 degrees and 180 degrees.

[0034] The side floating plate 21 has a rotation block 211. Along the length direction, the floating plate 212 and the rotation block 211 are arranged in intervals and correspondence; the first outer rotation plate includes two first outer plate strips 112 and two first outer plate columns 113. The two first outer plate strips 112 are arranged at an interval bottom, and the first outer plate column 113 is connected to the first outer plate strips 112. The two first outer plate columns 113 are extended in opposite directions. The rotation block 211 is located between the two first outer plate strips 112, and rotation grooves are formed on both sides of the rotation block 211. The rotation grooves are arranged in an arc shape, and the two first outer plate columns 113 are respectively embedded with two rotation grooves.

[0035] With the cooperation of the rotating fixed block 211 and the floating block 212, the angle rotation of the side floating plate 21 is more stable, and at the same time, the rotation virtual position is smaller, thereby improving the overall machine experience.

[0036] The self-locking assembly 3 includes two self-locking springs 31, a cam plate 32, a bayonet plate 33 and a buckle assembly 34. The bayonet plate 33 and the buckle assembly 34 are respectively fixedly arranged, and the two ends of the pin shaft 151 are respectively assembled with the bayonet plate 33 and the buckle assembly 34. The two self-locking springs 31 are respectively sleeved with two pin shafts 151, and the two ends of the self-locking springs 31 are respectively docked with the cam plate 32 and the buckle assembly; the cam plate 32 has two cam portions 321, and the two cam portions 321 are respectively meshed with the first rotating member 11 and the second rotating member 12.

[0037] In this way, under the action of the self-locking spring 31, elastic force is applied to generate a self-locking torque between the cam portion 321 and the first rotating member 11 or the second rotating member 12. Regardless of whether it is in a folded state or an unfolded state, the self-locking torque makes the unfolding and folding of the flexible screen more stable, thereby ensuring the use of the flexible screen.

[0038] The self-locking assembly 3 includes a middle lock spring 35, and the cam plate 32 has a cam column, which is extended toward the buckle assembly 34, and the cam column is embedded with the middle lock spring 35; the middle lock spring 35 is located between the two self-locking springs 31, and the two ends of the middle lock spring 35 are respectively docked with the cam plate 32 and the buckle assembly; the buckle assembly 34 includes a buckle plate and a baffle, the buckle plate and the baffle are assembled in an overlapping manner, the buckle plate is fixedly arranged, and the baffle is used to dock with the self-locking spring 31 and the middle lock spring 35.

[0039] Under the action of the middle locking spring 35, in cooperation with the two self-locking springs 31, sufficient self-locking torque is guaranteed. At the same time, the state switching of the shaft device is made more stable, the rotation virtual position is smaller, and the overall machine experience is improved.

[0040] The inward-folding flexible screen shaft device includes a shaft cover 4, and the floating plate assembly 2 includes a middle floating plate 22. The shaft cover 4 and the middle floating plate 22 are arranged in a superimposed assembly; the shaft cover 4 has a fixed column and a fixed column, and the fixed column is embedded in and fixes the bayonet plate 33 or the snap assembly 34. The synchronous component 16 has a center groove 162, and the center groove 162 is arranged to extend vertically along the axial direction. The fixed column is embedded in the center groove 162, and the fixed column is used to position the synchronous component 16.

[0041] With the cooperation of the shaft cover 4 and the middle floating plate 22, the layout and setting of the floating plate assembly 2, the two shaft assemblies 1 and the two self-locking assemblies 3 are realized; at the same time, the bayonet plate 33 or the buckle assembly 34 is fixed by the fixing column, and the pin 151 is also fixed. Furthermore, under the action of the same fixing column, the axial movement of the synchronizer 16 is positioned and the deviation is limited, thereby ensuring the smoothness and linearity of the movement of the synchronizer 16, and further ensuring the application of the self-locking torque of the self-locking assembly 3.

[0042] The pin shaft 151 is provided with an axis limiting plate 152, and the axis limiting plate 152 is convexly arranged along the radial direction of the pin shaft 151, and the axis limiting plate 152 is arranged in an arc shape. The first rotating member 11 includes a first rotating cylinder 114, and the first outer rotating plate is arranged corresponding to the first rotating cylinder 114. The pin shaft 151 is arranged to pass through the first rotating cylinder 114, and the first rotating cylinder 114 is located between the axis limiting plate 152 and the cam portion 321. The axis limiting plate 152 is used to limit the movement in the direction away from the cam portion 321. In this way, under the action of the axis limiting plate 152, the axial movement of the first rotating member 11 is avoided from being too large, so that the flexible screen can be switched between 90 degrees or 180 degrees.

[0043] The end of the first rotating cylinder 114 forms a cylinder wheel portion 115, and the cylinder wheel portion 115 is meshed with the cam portion 321, so that when the cylinder wheel portion 115 rotates and moves axially, the cam portion 321 is pushed to move axially, and then self-locking is performed through the self-locking assembly 3, thereby satisfying self-locking in different states.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The inner folding flexible screen shaft device is characterized by: The invention comprises a floating plate assembly, two rotating shaft assemblies and two self-locking assemblies, the two rotating shaft assemblies are arranged correspondingly at two ends, and the two rotating shaft assemblies are respectively assembled with the floating plate assemblies, and the floating plate assembly is assembled with the flexible screen; the rotating shaft assembly comprises a rotating component, a sliding component, a pin assembly, a synchronous member and a connecting component, the synchronous member and the pin assembly are movably assembled, the rotating component and the synchronous member are movably assembled, and the rotating component is used to drive the synchronous member to axially move and drive the connecting component to rotate, the sliding component and the synchronous member are assembled, the connecting component is used to drive the sliding component to rotate, the synchronous member is used to drive the sliding component to move axially, the sliding component drives the connecting component to move axially when it moves axially, and the connecting component is used to drive the floating plate assembly to rotate; the self-locking assembly is used to generate a self-locking torque and apply it to the self-locking assembly.

2. The inward folding flexible screen hinge device according to claim 1, characterized in that: The pin assembly includes two pin shafts, and the two pin shafts are arranged at intervals and correspondence along the radial direction. The two pin shafts synchronously penetrate the synchronous member. The rotating assembly includes a first rotating member and a second rotating member. The two pin shafts respectively penetrate the first rotating member and the second rotating member; the first rotating member has a first rotating groove, and the second rotating member has a second rotating groove. The first rotating groove and the second rotating groove are respectively arranged in a spiral shape. Slide bars are respectively formed on both sides of the synchronous member, and the slide bars are convexly arranged. The two slide bars are respectively embedded in the first rotating groove and the second rotating groove. When the synchronous member moves axially, it drives the first rotating member and the second rotating member to rotate synchronously.

3. The inward folding flexible screen hinge device according to claim 2, characterized in that: The connecting assembly includes two connecting plates, and the two connecting plates are respectively assembled with the first rotating member and the second rotating member, the connecting plates have connecting plate grooves, the first rotating member has a first outer rotating plate, and the second rotating member has a second outer rotating plate, the first outer rotating plate and the second outer rotating plate are arranged to rotate synchronously, the first outer rotating plate and the second outer rotating plate are respectively embedded with the two connecting plates, and the first outer rotating plate and the second outer rotating plate are used to synchronously drive the two connecting plates to rotate.

4. The inward folding flexible screen hinge device according to claim 3, characterized in that: The connecting plate has an inner plate groove, and the rotating slide assembly includes a first rotating slide and a second rotating slide, the first rotating slide includes a first rotating slide sheet, and the second rotating slide includes a second rotating slide sheet, and the first rotating slide sheet and the second rotating slide sheet are respectively embedded in the inner plate grooves of the two connecting plates; when the two connecting plates rotate synchronously, the first rotating slide sheet and the second rotating slide sheet are synchronously driven to be arranged in rotation, and when the synchronous parts move axially, the first rotating slide sheet and the second rotating slide sheet are synchronously driven to move axially.

5. The inward folding flexible screen hinge device according to claim 4, characterized in that: The connecting plate has a pin slot, the cross-section of the pin slot is long and strip-shaped and is arranged to extend obliquely, and the pin slot is connected to the inner plate slot; the connecting component includes two positioning pins, the two positioning pins correspond to the two connecting plates one by one and are arranged in a butt connection, and the two positioning pins respectively penetrate the first rotating slide and the second rotating slide and extend to be embedded in the pin slot; when the first rotating slide or the second rotating slide moves axially, the connecting plate is driven to move axially.

6. The inward folding flexible screen hinge device according to claim 5, characterized in that: The floating plate assembly includes two side floating plates, and the two side floating plates are in one-to-one correspondence and assembly arrangement with the two connecting plates. The side floating plate has a floating plate section, and the connecting plate has a floating slide groove, and the floating slide groove is arranged in an arc shape. The floating plate section is embedded with the floating slide groove. When the connecting plate rotates, the side floating plate is driven to rotate.

7. The inward folding flexible screen hinge device according to claim 6, characterized in that: The side floating plate has a rotation block, and along the length direction, the floating plate and the rotation block are arranged in intervals and correspondence; the first outer rotation plate includes two first outer plate strips and two first outer plate columns, the two first outer plate strips are arranged at an interval bottom, the first outer plate column is connected to the first outer plate strip, and the two first outer plate columns are extended in opposite directions, the rotation block is located between the two first outer plate strips, and rotation grooves are respectively formed on both sides of the rotation block, the rotation grooves are arranged in an arc shape, and the two first outer plate columns are respectively embedded with two of the rotation grooves.

8. The inward folding flexible screen hinge device according to any one of claims 2 to 7, characterized in that: The self-locking assembly includes two self-locking springs, a cam plate, a bayonet plate and a buckle assembly. The bayonet plate and the buckle assembly are respectively fixedly arranged, and the two ends of the pin shaft are respectively assembled with the bayonet plate and the buckle assembly. The two self-locking springs are respectively sleeved with two pin shafts, and the two ends of the self-locking springs are respectively docked with the cam plate and the buckle assembly; the cam plate has two cam parts, and the two cam parts are respectively meshed with the first rotating member and the second rotating member.

9. The inward folding flexible screen hinge device according to claim 8, characterized in that: The self-locking assembly includes a center lock spring, the cam plate has a cam column, the cam column is extended toward the buckle assembly, and the cam column is embedded with the center lock spring; the center lock spring is located between the two self-locking springs, and the two ends of the center lock spring are respectively docked with the cam plate and the buckle assembly; the buckle assembly includes a buckle plate and a baffle, the buckle plate and the baffle are assembled in an overlapping manner, the buckle plate is fixedly arranged, and the baffle is used to dock with the self-locking spring and the center lock spring.

10. The inward folding flexible screen hinge device according to claim 8, characterized in that: The inward-folding flexible screen shaft device includes a shaft cover, the floating plate assembly includes a middle floating plate, and the shaft cover and the middle floating plate are arranged in a superimposed assembly; the shaft cover has a fixed column and a fixed column, the fixed column is embedded in and fixes the bayonet plate or the buckle assembly, the synchronous part has a center groove, the center groove is vertically extended along the axial direction, the fixed column is embedded in the center groove, and the fixed column is used to position the synchronous part.

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