Flexible screen hinge opening and closing mechanism

Abstract

The utility model relates to the technical field of hinges, and discloses a flexible screen hinge opening and closing mechanism which comprises a plurality of opening and closing units, and the opening and closing units are synchronously opened and closed through linkage assemblies. The opening and closing unit comprises a base, the base is provided with two parallel shaft cores, the two sides of the base are hinged to rotating parts respectively, and the two shaft cores penetrate through the corresponding rotating parts on the same side respectively; the shaft core penetrates through the sliding block, and the contact face of the sliding block and the rotating part is in a spiral shape. When the rotating part on one side rotates around the shaft core connected with the rotating part, the sliding block is driven to axially move along the shaft core, and the sliding block drives the rotating part on the other side to synchronously rotate around the shaft core connected with the rotating part. According to the scheme, a conventional synchronous gear is replaced by the sliding block, and compared with gear synchronous transmission, the synchronous structure can further reduce the thickness of the whole opening and closing mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to hinge technical field, concretely relates to a flexible screen hinge opening and closing mechanism. BACKGROUND

[0002] The folding display device is fixed in the bending structure, when the user does not need to watch the flexible display screen, the user can utilize the bending structure, and the OLED display device is bent into the non-equal thickness form. The folding hinge is an important structure for realizing the folding function of the folding screen. How to make the folding flexible screen thinner by improving the folding hinge structure is one of the key directions for the development of the future flexible folding screen. The existing market flexible screen hinge opening and closing rely on gear synchronous transmission. Because the gear needs a certain gap in matching, it can move. If the matching is too tight, it will cause the whole machine to feel abnormal or cannot rotate. If the matching is too loose, it will cause the whole machine to be virtual, produce large shaking, and make the user experience poor.

[0003] The applicant's prior application of Chinese patent CN202422586010X discloses a folding hinge and a flexible screen folding mechanism. The folding hinge includes a mounting plate, the mounting plate is provided with a connecting part, the connecting part is hingedly connected with rotating parts on both sides, the rotating parts on both sides are synchronously turned inward to fold or synchronously turned outward to unfold; the rotating part is hingedly connected with a limiting part, the limiting part is hingedly connected with a sliding part, and the sliding part slides in a sliding groove of the mounting plate; the limiting part is also hingedly connected with an extension part, and the hinge points of the limiting part and the extension part and the hinge points of the limiting part and the sliding part are located on the same axis. The scheme limits the angle of the extension part to be greater than the angle of the sliding part by the limiting part, that is, the sliding part can realize the rotation of the extension part by a large angle through the rotation of a small angle. Since the rotation angle of the sliding part is small, the thickness of the corresponding sliding groove of the rotating part can be thin, thereby reducing the overall thickness of the folding hinge. The synchronous structure in the scheme is a gear synchronization, which needs to be improved.

[0004] The utility model overcomes the shortcomings of prior art, provides a flexible screen hinge opening and closing mechanism, can replace the existing gear synchronous structure, and further reduces the thickness of the hinge. INVENTION CONTENTS

[0005] The utility model mainly aims at providing a flexible screen hinge opening and closing mechanism, which comprises a plurality of opening and closing units, and the plurality of opening and closing units are synchronously opened and closed through a linkage assembly.

[0006] The opening and closing unit comprises a base, the base is provided with two parallel shaft cores, and the base is hingedly connected with rotating parts on both sides; the two shaft cores respectively pass through the corresponding rotating parts on the same side.

[0007] The shaft core passes through the sliding block, and a contact surface of the sliding block with the rotating part is in a spiral shape; when one side rotating part rotates around the shaft core connected therewith, the sliding block is driven to move along the shaft core in an axial direction, and the sliding block drives the other side rotating part to rotate around the shaft core connected therewith synchronously.

[0008] Optionally, the rotating part comprises a fixed plate, an upper torsion arm, a lower torsion arm and a trajectory plate; the fixed plate is in sliding connection with the upper torsion arm, the lower torsion arm and the trajectory plate; the trajectory plate is in sliding connection with the base; the trajectory plate is hinged with the lower torsion arm through a connecting rod; the shaft core passes through the upper torsion arm and the lower torsion arm; the sliding block is located between the upper torsion arm and the lower torsion arm; a contact surface of a head end of the sliding block with the upper torsion arm is in a spiral shape; and a contact surface of a tail end of the sliding block with the lower torsion arm is in a spiral shape.

[0009] Optionally, the fixed plate is provided with a first guide groove and a second guide groove.

[0010] A top portion of the trajectory plate is in matching connection with the first guide groove; and a tail portion of the trajectory plate is in sliding connection with the base.

[0011] Side surfaces of the upper torsion arm and the lower torsion arm are in matching connection with the second guide groove; and adjacent side surfaces of the upper torsion arm and the lower torsion arm are connected through a sliding bolt.

[0012] Optionally, the lower torsion arm is connected with the shaft core through a first rotating cylinder; the upper torsion arm is connected with the shaft core through a second rotating cylinder; the sliding block is located between the first rotating cylinder and the second rotating cylinder; a contact surface of the first rotating cylinder with the tail end of the sliding block is in a spiral shape; and a contact surface of the second rotating cylinder with the head end of the sliding block is in a spiral shape.

[0013] Optionally, the shaft core is sleeved with a spring; the number of the second rotating cylinders is two; the spring is arranged between the two second rotating cylinders; and the spring is arranged between the second rotating cylinder and the tail end of the shaft core.

[0014] Optionally, a protrusion is arranged between the spring and the second rotating cylinder; the protrusion slides along the shaft core; the protrusion connects two shaft cores; and a contact surface of the protrusion with the second rotating cylinder is in a climbing slope.

[0015] Optionally, the base is provided with an arc-shaped groove; a tail portion of the trajectory plate is provided with an arc-shaped sliding surface; the arc-shaped sliding surface is in matching connection with the arc-shaped groove; and a block is arranged in an arc-shaped interval of the arc-shaped groove.

[0016] Optionally, the linkage assembly comprises a floating plate, a cover plate and a connecting support, the floating plate is hinged to the front surface of the track plate, the cover plate is fixedly connected to the back surface of the base, and the connecting support is arranged on the front surface of the opening and closing unit and used for connecting the opening and closing unit.

[0017] Optionally, the front end of the shaft core is hinged to the base through a C-shaped buckle, and the tail end of the shaft core is fixedly connected to the cover plate through a shaft core support, and the shaft core is hinged to the shaft core support.

[0018] Optionally, the back surface of the fixed plate is fixedly connected to a support frame, and the support frame is used for mounting the flexible screen.

[0019] Compared with the prior art, the flexible screen hinge opening and closing mechanism has the following beneficial effects:

[0020] The flexible screen hinge opening and closing mechanism provided by the utility model realizes opening and closing through the opening and closing unit, realizes synchronous opening and closing of multiple opening and closing units through the linkage assembly, and realizes synchronous rotation of the symmetrical rotating parts in the opening and closing unit through the sliding block, because the contact surface of the rotating part and the sliding block is spiral, when one side rotating part rotates, under the action of the spiral contact surface, the sliding block is pushed to move along the shaft core, and then the other side rotating part is driven to rotate synchronously, and compared with the gear synchronous transmission, the synchronous structure can further reduce the thickness of the whole opening and closing mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0021] One or more embodiments are exemplarily described by corresponding drawings, and the exemplarily description does not constitute limitation on the embodiments, elements with the same reference numerals in the drawings represent similar elements, unless specially stated, and the drawings do not constitute proportional limitation.

[0022] Figure 1 It is an opening and closing unit schematic view of the flexible screen hinge opening and closing mechanism embodiment of the utility model;

[0023] Figure 2 It is a top view of the opening and closing unit of the flexible screen hinge opening and closing mechanism embodiment of the utility model;

[0024] Figure 3 It is an opening and closing unit explosion Figure 1 of the flexible screen hinge opening and closing mechanism embodiment of the utility model;

[0025] Figure 4 It is an opening and closing unit explosion Figure 2 of the flexible screen hinge opening and closing mechanism embodiment of the utility model;

[0026] Figure 5 It is a sectional view of the opening and closing unit of the flexible screen hinge opening and closing mechanism embodiment of the utility model;

[0027] Figure 6The utility model discloses a flexible screen hinge opening and closing mechanism embodiment opening and closing unit folding state schematic drawing.

[0028] Figure 7 The utility model discloses a flexible screen hinge opening and closing mechanism embodiment opening and closing unit folding state sectional view.

[0029] Figure 8 The utility model discloses a flexible screen hinge opening and closing mechanism embodiment unfolding schematic drawing.

[0030] Figure 9 The utility model discloses a flexible screen hinge opening and closing mechanism embodiment folding schematic drawing.

[0031] Figure 10 The utility model discloses a flexible screen hinge opening and closing mechanism embodiment explosion map.

[0032] Reference signs:

[0033] 100-opening and closing unit, 110-base, 111-arc slot, 120-axis core, 121-spring, 122-bump, 123-C type buckle, 124-axis core support, 130-rotation part, 131-fixed plate, 1311-first guide slot, 1312-second guide slot, 132-upper torsion arm, 1321-second rotating cylinder, 133-lower torsion arm, 1331-first rotating cylinder, 134-trajectory plate, 1341-arc sliding surface, 135-connecting rod, 136-sliding bolt, 140-sliding block, 141-sleeve, 200-linkage assembly, 210-floating plate, 220-cover plate, 230-support frame, 240-connecting support. DETAILED DESCRIPTION

[0034] For the convenience of understanding the utility model, the utility model is explained in more detail below in combination with the drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween. The terms "vertical", "horizontal", "left", "right", "inner", "outer" and similar expressions used in the specification are for the purpose of illustration only. In the description of the utility model, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating relative importance, or implying the number of the indicated technical features. Therefore, unless otherwise specified, the features with "first", "second" can explicitly or implicitly include one or more of the features; the meaning of "multiple" is two or more. The term "include" and any variation thereof means non-exclusive inclusion, and one or more other features, integers, steps, operations, units, components and / or combinations thereof can be present or added.

[0035] In addition, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. All technical and scientific terms used in the specification are the same as the meanings commonly understood by the person skilled in the art of the utility model. The terms used in the specification of the utility model are only for the purpose of describing the specific embodiments, and are not applicable to limit the utility model. The term "and / or" used in the specification includes any and all combinations of one or more related listed items.

[0036] In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as there is no conflict between them.

[0037] As shown in the utility model provides a flexible screen hinge opening and closing mechanism embodiment schematic view. Figures 1-10

[0038] Please refer to Figures 1-10 ​The embodiment is used for realizing the opening and closing of a flexible screen, and is especially suitable for the opening and closing of an OLED display screen device. The embodiment comprises a plurality of opening and closing units 100, and the plurality of opening and closing units 100 are synchronously opened and closed through a linkage assembly 200. The number of the opening and closing units 100 can be selected according to the size of the screen or the structure of the display screen device. In the embodiment, three opening and closing units 100 are connected in series. The opening and closing unit 100 comprises a base 110, the base 110 is provided with two parallel shaft cores 120, the base 110 is hingedly connected with rotating parts 130 on two sides respectively, the two shaft cores 120 pass through the corresponding rotating parts 130 on the same side respectively, and the rotating parts 130 on the two sides rotate around the shaft cores 120 connected therewith respectively.

[0039] The shaft core 120 passes through a sliding block 140, the contact surface between the rotating part 130 and the sliding block 140 is in a spiral shape, the sliding block 140 moves along the axial direction of the shaft core 120, and therefore the spiral contact surface always keeps a fixed surface. When the rotating part 130 on one side rotates around the shaft core 120 connected therewith, the rotating part 130 and the spiral contact surface of the sliding block 140 are in close contact with each other, the rotation of the spiral contact surface is converted into the linear motion of the sliding block 140, that is, the rotating part 130 drives the sliding block 140 to move along the axial direction of the shaft core 120, and correspondingly, the linear motion of the sliding block 140 drives the rotating part 130 on the other side to synchronously rotate around the shaft core 120 connected therewith, thereby realizing the synchronous rotation and opening and closing of the rotating parts 130 on the two sides.

[0040] The sliding block 140 specifically comprises two sleeves 141, the two sleeves 141 are connected between the peripheral surfaces thereof, the two shaft cores 120 pass through the two sleeves 141 respectively, and the sleeves 141 are respectively provided with spiral surfaces at the two ends thereof, the spiral surface shapes are matched with the spiral surface shapes of the rotating parts 130.

[0041] In an embodiment, the rotating part 130 comprises a fixed plate 131, an upper torsion arm 132, a lower torsion arm 133 and a trajectory plate 134. The fixed plate 131 is slidably connected with the upper torsion arm 132, the lower torsion arm 133 and the trajectory plate 134, the trajectory plate 134 is slidably connected with the base 110, and the trajectory plate 134 is hingedly connected with the lower torsion arm 133 through a connecting rod 135. The shaft core 120 passes through the upper torsion arm 132 and the lower torsion arm 133, the sliding block 140 is located between the upper torsion arm 132 and the lower torsion arm 133, the contact surface between the first end (i.e. the first end of the sleeve 141) of the sliding block 140 and the upper torsion arm 132 is in a spiral shape, and the contact surface between the tail end (i.e. the tail end of the sleeve 141) of the sliding block 140 and the lower torsion arm 133 is in a spiral shape.

[0042] The fixed plate 131 is used to connect the upper torsion arm 132, the lower torsion arm 133 and the trajectory plate 134, so that the upper torsion arm 132, the lower torsion arm 133 and the trajectory plate 134 rotate synchronously. The trajectory plate 134 is slidingly connected with the base 110, and the trajectory plate 134 does not displace in the axial direction of the shaft core 120. The trajectory plate 134 is hingedly connected with the lower torsion arm 133 through the connecting rod 135, and the lower torsion arm 133 also does not displace in the axial direction of the shaft core. The upper torsion arm 132 can displace in the axial direction of the shaft core 120. Therefore, when the fixed plate 131 drives the upper torsion arm 132, the lower torsion arm 133 and the trajectory plate 134 to rotate, the lower torsion arm 133 drives the sliding block 140 to move along the axial direction of the shaft core 120 under the action of the helical contact surface of the sliding block 140, and the sliding block 140 drives the upper torsion arm 132 to move along the axial direction of the shaft core 120. The upper torsion arm 132 and the lower torsion arm 133 limit the movement range of the sliding block 140.

[0043] Further, the fixed plate 131 is provided with a first guide groove 1311 and a second guide groove 1312. The top of the trajectory plate 134 is matched and connected with the first guide groove 1311, and the tail of the trajectory plate 134 is slidingly connected with the base 110. The first guide groove 1311 is used for guiding and limiting the movement of the trajectory plate 134, and the setting direction of the first guide groove 1311 is the same as the rotating direction of the trajectory plate 134.

[0044] The side surfaces of the upper torsion arm 132 and the lower torsion arm 133 are matched and connected with the second guide groove 1312, and the adjacent side surfaces of the upper torsion arm 132 and the lower torsion arm 133 are connected through the sliding bolt 136. The upper torsion arm 132 and the lower torsion arm 133 are located in the same second guide groove 1312, and the second guide groove 1312 is used for guiding and limiting the movement of the upper torsion arm 132 and the lower torsion arm 133. The width of the second guide groove 1312 has a margin for the movement of the upper torsion arm 132 along the axial direction of the shaft core 120. The movement of the upper torsion arm 132 along the axial direction of the shaft core 120 is limited by the sliding bolt 136 between the upper torsion arm 132 and the lower torsion arm 133.

[0045] Specifically, the lower torsion arm 133 is connected with the shaft core 120 through the first rotating cylinder 1331, the upper torsion arm 132 is connected with the shaft core 120 through the second rotating cylinder 1321, and the sliding block 140 is located between the first rotating cylinder 1331 and the second rotating cylinder 1321. The contact surface between the first rotating cylinder 1331 and the tail end of the sliding block 140 is helical, and the contact surface between the second rotating cylinder 1321 and the head end of the sliding block 140 is helical.

[0046] In an embodiment, the shaft core 120 is sleeved with the spring 121, the number of the second rotating drum 1321 is two, the spring 121 is arranged between the two second rotating drums 1321, and the spring 121 is arranged between the second rotating drum 1321 and the tail end of the shaft core 120. During the opening and closing process of the opening and closing unit 100, the sliding block 140 moves axially along the shaft core 120 to compress the spring 121, so that a torsion is generated in the opening and closing process, to maintain the opening and closing at a certain angle.

[0047] Further, the spring 121 and the second rotating drum 1321 are provided with the protrusion 122, the protrusion 122 slides along the shaft core 120, the protrusion 122 connects two shaft cores 120, and the contact surface between the protrusion 122 and the second rotating drum 1321 is a climbing slope. Through the spring force of the spring 121 combined with the protrusion 122, the opening and closing unit 100 can realize the action of automatic closing or automatic unfolding when rotating to a certain angle.

[0048] In an embodiment, the base 110 is provided with the arc-shaped groove 111, the tail part of the track plate 134 is provided with the arc-shaped sliding surface 1341, the arc-shaped sliding surface 1341 is matched and connected with the arc-shaped groove 111, the arc-shaped groove 111 is provided with a block in the arc-shaped interval, to limit the rotating angle of the track plate 134, the angle interval is mainly limited by the base 110 and the lower torsion arm 133, and the arc-shaped groove 111 of the track plate 134 and the base 110 is mainly used for testing, so that the arc-shaped groove 111 cannot be taken out.

[0049] The rotating interval is specifically 0-180 degrees, as shown in Figure 6 , Figure 7 and Figure 9 , when the rotating interval is 0 degree, the opening and closing unit 100 is in a completely closed state, at this time, the arc-shaped sliding surface 1341 is located at the end point of the arc-shaped groove 111, and the top starting points of the helical surfaces at two ends of the sliding block 140 are in contact with the top starting points of the helical surfaces of the upper torsion arm 132 and the lower torsion arm 133 respectively; as shown in Figure 5 and Figure 8 , when the rotating interval is 180 degrees, the opening and closing unit 100 is in a completely opened state, at this time, the arc-shaped sliding surface 1341 is located at the starting point of the arc-shaped groove 111, and the bottom end points of the helical surfaces at two ends of the sliding block 140 are in contact with the bottom end points of the helical surfaces of the upper torsion arm 132 and the lower torsion arm 133 respectively.

[0050] In an embodiment, as shown in Figures 8-10 , the linkage assembly 200 includes the floating plate 210, the cover plate 220 and the connecting support 240. The floating plate 210 is hingedly connected with the front surface of the track plate 134, the cover plate 220 is fixedly connected with the back surface of the base 110, and the connection can be achieved through screws. The connecting support 240 is arranged on the front surface of the opening and closing unit 100, and is used for connecting the opening and closing unit 100. In this embodiment, the connecting support 240 is used for synchronously connecting three opening and closing units 100 and covering the blank position, and supports the flexible screen.

[0051] In an embodiment, the first end of the shaft core 120 is hinged to the base 110 through the C-shaped buckle 123, and the second end of the shaft core 120 is fixedly connected to the cover plate 220 through the shaft core support 124, and the shaft core 120 is hinged to the shaft core support 124.

[0052] In an embodiment, the back surface of the fixed plate 131 is fixedly connected to the support frame 230, and the support frame 230 is used for installing the flexible screen.

[0053] The rotating process of the embodiment is as follows:

[0054] The fixed plate 131, the floating plate 21, the upper torsion arm 132, the lower torsion arm 133, the connecting rod 135, the track plate 134 are cooperatively linked, the sliding block 140 drives the rotating parts 130 on the left and right sides to rotate synchronously, the floating plate 210 connects the three opening and closing units 100 in series, the left and right support frames 230 are rotated, the sliding block 140 slides up and down, the upper torsion arm 132 and the lower torsion arm 133 push the protrusion 122 to compress the spring 121, so that the product generates torsion, and the contact surfaces of the upper torsion arm 132, the lower torsion arm 133 and the protrusion 122 are designed to have a climbing inclined angle, so that the product is automatically closed or automatically unfolded at a certain angle.

[0055] The existing market flexible screen hinge opening and closing relies on gear synchronous transmission. Since the gear needs a certain gap in matching, movement can be performed. If the matching is too tight, the whole machine feels abnormal or cannot be rotated. If the matching is too loose, the whole machine has a virtual position and produces large shaking, so that the user experience is poor. In the embodiment, the sliding block is used for matching transmission, and the sliding block and the upper torsion arm adopt a spiral-shaped contact surface. In the rotating process, the spirals contact and tightly adhere to each other, so that the hand feeling is greatly improved.

[0056] The thickness of the whole machine can also be reduced, and the total thickness is 8.4 mm, and the thickness of a single screen after unfolding is 4.2 mm, so that the whole machine is more light and thin, and has more experience and technology, and the weight of the whole machine is reduced, so that the user carries more conveniently.

[0057] In summary, in the embodiment of the utility model, the opening and closing unit is used to realize opening and closing, the linkage assembly is used to realize synchronous opening and closing of multiple opening and closing units, the rotating parts symmetrically arranged in the opening and closing unit realize synchronous rotation through the sliding block, and since the contact surfaces of the rotating parts and the sliding block are spiral-shaped, when one side rotating part rotates, the sliding block is driven to move along the shaft core under the action of the spiral contact surface, and then the other side rotating part is driven to rotate synchronously, so that the synchronous structure can further reduce the thickness of the whole opening and closing mechanism compared with the gear synchronous transmission.

[0058] The above examples are only used to illustrate the technical solutions of the present application, and are not limited thereto; under the idea of the present application, the technical features in the above examples or different examples can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for simplicity; although the present application has been described in detail with reference to the foregoing examples, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing examples can still be modified, or some technical features therein can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A flexible screen hinge opening and closing mechanism, characterized in that, The opening and closing mechanism comprises a plurality of opening and closing units which are synchronously opened and closed by a linkage assembly; The opening and closing unit comprises a base provided with two parallel shaft cores, and two rotating parts are respectively hinged to the two sides of the base, and the two shaft cores respectively pass through the corresponding rotating parts on the same side; The shaft core passes through a sliding block, and the contact surface between the sliding block and the rotating part is in a spiral shape; when one side of the rotating part rotates around the shaft core connected thereto, the sliding block is driven to move axially along the shaft core, and the sliding block drives the other side of the rotating part to rotate synchronously around the shaft core connected thereto. 2.The flexible screen hinge opening and closing mechanism according to claim 1, characterized in that, The rotating part comprises a fixed plate, an upper torsion arm, a lower torsion arm and a trajectory plate; the fixed plate is slidably connected with the upper torsion arm, the lower torsion arm and the trajectory plate, the trajectory plate is slidably connected with the base, and the trajectory plate is hingedly connected with the lower torsion arm through a connecting rod; the shaft core passes through the upper torsion arm and the lower torsion arm, and the sliding block is located between the upper torsion arm and the lower torsion arm; the contact surface between the head end of the sliding block and the upper torsion arm is in a spiral shape, and the contact surface between the tail end of the sliding block and the lower torsion arm is in a spiral shape. 3.The flexible screen hinge opening and closing mechanism according to claim 2, characterized in that, The fixed plate is provided with a first guide groove and a second guide groove; The top of the trajectory plate is matched and connected with the first guide groove, and the tail of the trajectory plate is slidably connected with the base; The side surfaces of the upper torsion arm and the lower torsion arm are matched and connected with the second guide groove, and the adjacent side surfaces of the upper torsion arm and the lower torsion arm are connected through a sliding bolt. 4.The flexible screen hinge opening and closing mechanism according to claim 2, characterized in that, The lower torsion arm is connected with the shaft core through a first rotating drum, the upper torsion arm is connected with the shaft core through a second rotating drum, the sliding block is located between the first rotating drum and the second rotating drum, the contact surface between the first rotating drum and the tail end of the sliding block is in a spiral shape, and the contact surface between the second rotating drum and the head end of the sliding block is in a spiral shape.

5. The flexible screen hinge opening and closing mechanism according to claim 4, characterized in that, The shaft core is sleeved with a spring, the number of the second rotating drums is two, the spring is arranged between the two second rotating drums, and the spring is arranged between the second rotating drum and the tail end of the shaft core. 6.The flexible screen hinge opening and closing mechanism according to claim 5, characterized in that, A protrusion is arranged between the spring and the second rotating drum, the protrusion slides along the shaft core, the protrusion connects the two shaft cores, and the contact surface between the protrusion and the second rotating drum is in a climbing slope shape. 7.The flexible screen hinge opening and closing mechanism according to claim 2, characterized in that, The base is provided with an arc-shaped groove, the tail of the trajectory plate is provided with an arc-shaped sliding surface, the arc-shaped sliding surface is matched and connected with the arc-shaped groove, and a block is arranged in the arc-shaped interval of the arc-shaped groove. 8.The flexible screen hinge opening and closing mechanism according to claim 2, characterized in that, The linkage assembly comprises a floating plate, a cover plate and a connecting support, the floating plate is hingedly connected with the front surface of the trajectory plate, the cover plate is fixedly connected with the back surface of the base, and the connecting support is arranged on the front surface of the opening and closing unit and used for connecting the opening and closing unit. 9.The flexible screen hinge opening and closing mechanism according to claim 8, characterized in that, The head end of the shaft core is hingedly connected with the base through a C-shaped buckle, the tail end of the shaft core is fixedly connected with the cover plate through a shaft core support, and the shaft core is hingedly connected with the shaft core support. 10.The flexible screen hinge opening and closing mechanism according to claim 8, characterized in that, The back surface of the fixed plate is fixedly connected with a support frame, and the support frame is used for mounting a flexible screen.

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