Inward folding flexible screen hinge device

Abstract

The present invention relates to the technical field of the rotating shaft of the inward-folding flexible screen, and discloses an inward-folding flexible screen rotating shaft device, including a floating plate assembly, two rotating shaft assemblies and two self-locking assemblies. The two rotating shaft assemblies are respectively assembled with the floating plate assembly, and the floating plate assembly is assembled with the flexible screen; the rotating shaft assembly includes a rotating component, a sliding component, a pin assembly, a synchronizer and a connecting component. The rotating component is used to drive the synchronizer to move axially and drive the connecting component to rotate. The connecting component is used to drive the sliding component to rotate. The synchronizer is used to drive the sliding component to move axially. The sliding component moves axially and drives the connecting component to move axially. 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. Within the same screen space, the rotating shaft device requires less space, which is mainly reflected in the thinner thickness in the unfolded state and the folded state. It also has a stable structure and smaller rotational clearance, which improves the overall user experience.

Description

Technical Field

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

[0002] A foldable screen phone is a phone with a foldable screen. After the screen is folded, it can be used as a phone just like our current straight-screen phones. When needed, we can open the screen to turn it into a tablet. Different modes can be used in different scenarios. The folding methods of foldable screen phones are divided into up and down folding and left and right folding. The left and right folding can be 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 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 limiting sleeve that cooperates with the first sliding arm of the left gear and a first sliding groove that cooperates with the first limiting sleeve. The right connecting seat is provided with a second limiting sleeve that cooperates with the second sliding arm of the right gear and a second sliding groove that cooperates with the second limiting sleeve.

[0004] In the prior art, the space required for the rotating 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] 7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. said linking rod being washer and said adjusting base respectively. said bolt having a round shank and said adjusting base being connected with said linking rod.

[0007] Furthermore, the pin assembly includes two pin shafts, 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, 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, and slide bars are formed on both sides of the synchronous member, the slide bars are convexly arranged, and the two slide 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 a connecting plate groove, 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 plate grooves, and 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, and the sliding assembly includes a first sliding member and a second sliding member, the first sliding member includes a first sliding plate, and the second sliding member includes a second sliding plate, and the first sliding plate and the second sliding plate are respectively embedded in the inner plate grooves of the two connecting plates; when the two connecting plates rotate synchronously, the first sliding member and the second sliding member are synchronously driven to rotate, and when the synchronous member moves axially, the first sliding member and the second sliding member are synchronously driven to move axially.

[0010] Furthermore, the connecting plate has a pin slot, the cross-section of the pin slot is long and obliquely extended, and the pin slot is connected to the inner plate slot; the connecting assembly includes two positioning pins, the two positioning pins are in one-to-one correspondence with the two connecting plates and are docked, and the two positioning pins respectively pass through 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, it drives the connecting plate 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 plates have floating plate members, and the connecting plates have floating slides. The floating slides are arranged in an arc shape, and the floating plate members are embedded in the floating slides. When the connecting plates rotate, the side floating plates are driven to rotate.

[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 a corresponding interval; the first outer rotation plate includes two first outer strips and two first outer plate columns, the two first outer strips are arranged at the bottom of the interval, the first outer plate columns are connected to the first outer strips, and the two first outer plate columns are extended in opposite directions, the rotation block is located between the two first outer strips, and rotation grooves are 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 snap assembly. The bayonet plate and the snap assembly are respectively fixedly arranged, and the two ends of the pin shaft are respectively assembled with the bayonet plate and the snap 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 snap assembly; the cam plate has two cam parts, and the two cam parts are respectively engaged 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 snap 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 snap assembly; the snap assembly includes a snap plate and a baffle, the snap plate and the baffle are superimposed and assembled, the snap plate is fixed, and the baffle is used to dock with the self-locking spring and the center lock spring.

[0015] Furthermore, the inward-folding flexible screen hinge device includes a hinge cover, the floating plate assembly includes a middle floating plate, and the hinge cover and the middle floating plate are arranged in a superimposed assembly; the hinge cover has a fixed column and a fixed column, the fixed column is embedded in and fixes the bayonet plate or the snap assembly, the synchronizer 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 synchronizer.

[0016] Compared with the existing technology, 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 clearance, which improves the overall user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an exploded schematic diagram of the inward-folding flexible screen hinge device provided by the present invention;

[0018] Figure 2 It is a three-dimensional schematic diagram of the shaft assembly of the inward folding flexible screen shaft device provided by the present invention;

[0019] 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;

[0020] 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;

[0021] 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;

[0022] Figure 6 It is a partially enlarged schematic diagram of the inward folding flexible screen hinge device provided by the present invention;

[0023] 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;

[0024] Figure 8It is a three-dimensional schematic diagram of the connecting plate of the inward folding flexible screen rotating shaft device provided by the present invention;

[0025] Figure 9 It is a three-dimensional schematic diagram of the self-locking assembly of the inward folding flexible screen rotating shaft device provided by the present invention;

[0026] Figure 10 It is a three-dimensional schematic diagram of the inward-folding flexible screen hinge device provided by the present invention in an unfolded state;

[0027] Figure 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

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to 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.

[0029] The implementation of the present invention is described in detail below with reference to specific embodiments.

[0030] 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", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] Reference Figure 1-11 The figure shows a preferred embodiment of the present invention.

[0032] The inward-folding flexible screen rotating shaft device includes a floating plate assembly 2, two rotating shaft assemblies 1 and two self-locking assemblies 3. The two rotating shaft assemblies 1 are arranged correspondingly at both ends, and the two rotating 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 rotating shaft assembly 1 includes a rotating component, a sliding component, a pin assembly 15, a synchronizer 16 and a connecting component. The synchronizer 16 and the pin assembly 15 are movably assembled, and the rotating component and the synchronizer 16 are movably assembled, and the rotating component is used to drive the synchronizer 16 to move axially and drive the connecting component to rotate, the sliding component and the synchronizer 16 are assembled, the connecting component is used to drive the sliding component to rotate, the synchronizer 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.

[0033] 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 and folded states, and the structure is stable, with smaller rotational clearance, which improves the overall user experience.

[0034] The pin assembly 15 includes two pin shafts 151, which are arranged at intervals and correspondence in the radial direction. The two pin shafts 151 synchronously penetrate the synchronizer 16. The rotating assembly includes a first rotating member 11 and a second rotating member 12. The two pin shafts 151 respectively penetrate the first rotating member 11 and the second rotating member 12; the first rotating member 11 has a first rotating groove 111, and the second rotating member 12 has a second rotating groove. 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 synchronizer 16. 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 synchronizer 16 moves axially, it drives the first rotating member 11 and the second rotating member 12 to rotate synchronously.

[0035] 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 that the rotating assembly, the sliding assembly and the cam plate 32 are assembled together. Moreover, when the rotating assembly rotates, under the action of the first rotating slot 111 and the second rotating slot, 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 synchronized by the cooperation of the first rotating slot 111 and the second rotating slot.

[0036] The connecting assembly includes two connecting plates 17, which are respectively assembled with the first rotating member 11 and the second rotating member 12. 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. The first outer rotating plate and the second outer rotating plate are used to synchronously drive the two connecting plates 17 to rotate.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] The connecting plate 17 has a pin slot 172, the cross-section of the pin slot 172 is long and extends obliquely, and the pin slot 172 is connected to the inner plate slot 171; the connecting component includes two positioning pins 18, the two positioning pins 18 are in one-to-one correspondence and docking arrangement with the two connecting plates 17, and the two positioning pins 18 respectively pass through 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, it drives the connecting plate 17 to move axially.

[0041] 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.

[0042] The floating plate assembly 2 includes two side floating plates 21, which are in one-to-one correspondence and assembly arrangement with the two connecting plates 17. The side floating plates 21 have floating plate members 212, and the connecting plates 17 have floating slides 173. The floating slides 173 are arranged in an arc shape. The floating plate members 212 are embedded with the floating slides 173. When the connecting plates 17 rotate, the side floating plates 21 are driven to rotate.

[0043] In this way, the side floating plate 21 is rotated by the cooperation between the floating chute 173 and the floating plate 212, and the switching between 90 degrees and 180 degrees is achieved.

[0044] 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 a corresponding manner at intervals; 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 the bottom of the interval, and the first outer plate columns 113 are 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. 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.

[0045] With the cooperation of the rotating fixed block 211 and the floating plate 212, the angular rotation of the side floating plate 21 is more stable. At the same time, the rotation virtual position is smaller, which improves the overall user experience.

[0046] 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 34; the cam plate 32 has two cam portions 321, and the two cam portions 321 are respectively engaged with the first rotating member 11 and the second rotating member 12.

[0047] 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.

[0048] The self-locking assembly 3 includes a middle lock spring 35, and the cam plate 32 has a cam column, which extends 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 34; the buckle assembly 34 includes a buckle plate and a baffle, which are assembled in a superimposed manner, and 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.

[0049] 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 clearance is smaller, and the overall user experience is improved.

[0050] 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, the fixed column is embedded in and fixes the bayonet plate 33 or the snap assembly 34, and the synchronizer 16 has a center groove 162, and the center groove 162 is arranged to extend vertically along the axial direction, and the fixed column is embedded in the center groove 162, and the fixed column is used to position the synchronizer 16.

[0051] 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 shaft 151 is also fixed. Furthermore, under the action of the same fixed 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.

[0052] The pin shaft 151 is provided with an axis limiting piece 152, which is convexly arranged along the radial direction of the pin shaft 151 and 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 through the first rotating cylinder 114, and the first rotating cylinder 114 is located between the axis limiting piece 152 and the cam portion 321. The axis limiting piece 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 piece 152, the axial movement of the first rotating member 11 is avoided from being too large, which facilitates the switching of the flexible screen between 90 degrees or 180 degrees.

[0053] The end of the first rotating cylinder 114 forms a cylinder wheel portion 115, and the cylinder wheel portion 115 is arranged in meshing with the cam portion 321, so that when the cylinder wheel portion 115 rotates and moves axially, it pushes the cam portion 321 to move axially, and then self-locks through the self-locking assembly 3, thereby meeting self-locking requirements in different states.

[0054] 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 scope of protection of the present invention.

Claims

1. The inward folding flexible screen hinge device is characterized by:

7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. said linking rod is pivotally connected to said linking rod. said linking rod is pivotally connected to said linking rod. said linking rod is pivotally connected to said linking rod. and a second latching mechanism, wherein the first latching mechanism is configured to engage with the first and second latching mechanisms, the second latching mechanism being configured to engage with the first and second latching mechanisms, and the second latching mechanism being configured to engage with the first and second latching mechanisms.

2. The inward folding flexible screen hinge device according to claim 1, 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 a connecting plate groove, 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 plate grooves, and the first outer rotating plate and the second outer rotating plate are respectively embedded with the two connecting plates. The first outer rotating plate and the second outer rotating plate are used to synchronously drive the two connecting plates to rotate.

3. The inward folding flexible screen hinge device according to claim 2, characterized in that: The connecting plate has an inner plate groove, and the sliding assembly includes a first sliding member and a second sliding member, the first sliding member includes a first sliding plate, and the second sliding member includes a second sliding plate, and the first sliding plate and the second sliding plate are respectively embedded in the inner plate grooves of the two connecting plates; when the two connecting plates rotate synchronously, the first sliding member and the second sliding member are synchronously driven to rotate, and when the synchronous member moves axially, the first sliding member and the second sliding member are synchronously driven to move axially.

4. The inward folding flexible screen hinge device according to claim 3, characterized in that: The connecting plate has a pin slot, the cross-section of the pin slot is long and obliquely extended, and the pin slot is connected to the inner plate slot; the connecting assembly includes two positioning pins, the two positioning pins are in one-to-one correspondence with the two connecting plates and are butt-jointed, and the two positioning pins respectively pass through 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.

5. The inward folding flexible screen hinge device according to claim 4, 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 plates have floating plate members, and the connecting plates have floating slides. The floating slides are arranged in an arc shape, and the floating plate members are embedded in the floating slides. When the connecting plates rotate, the side floating plates are driven to rotate.

6. The inward folding flexible screen hinge device according to claim 5, 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 a corresponding interval; the first outer rotation plate includes two first outer strips and two first outer plate columns, the two first outer strips are arranged at the bottom of the interval, the first outer plate columns are connected to the first outer strips, and the two first outer plate columns are extended in opposite directions, the rotation block is located between the two first outer strips, and rotation grooves are formed on both sides of the rotation block, respectively. 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.

7. The inward folding flexible screen hinge device according to claim 1, 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 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 superimposed and assembled, the buckle plate is fixed, and the baffle is used to dock with the self-locking spring and the center lock spring.

8. The inward folding flexible screen hinge device according to claim 1, 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 snap assembly, the synchronizer 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 synchronizer.

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