Flexible screen hinge opening and closing mechanism

Abstract

The invention 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 block 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 present invention relates to the field of hinge technology, and in particular to a flexible screen hinge opening and closing mechanism. Background Art

[0002] The structure of the folding display device is to fix the OLED display screen in the bending structure. When the user does not need to watch the flexible display screen, the user can use the bending structure to bend the OLED display device into a non-uniform thickness. 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 flexible folding screens in the future. The opening and closing of the hinges of the existing flexible screens in the market rely on gears for synchronous transmission. Because the gears need a certain gap in the matching to move, if the matching is tight, the whole machine will feel abnormal or unable to rotate. If the matching is loose, the whole machine will be in a vacant position, resulting in greater shaking, which will give the user a poor experience.

[0003] The Chinese patent CN202422586010X previously applied by the applicant 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 portion, and the connecting portion is hinged with rotating portions on both sides, and the rotating portions on both sides are synchronously flipped inward and folded or synchronously flipped outward and flattened; the rotating portion is hinged with a limiting portion, and the limiting portion is hinged with a sliding portion, and the sliding portion slides in the slide groove of the mounting plate; the limiting portion is also hinged with the extension portion, and the hinge point of the limiting portion and the extension portion is located on the same axis as the hinge point of the limiting portion and the sliding portion. In this scheme, the angle of flipping and folding of the extension portion is limited by the limiting portion to be greater than the angle of flipping and folding of the sliding portion, that is, the sliding portion can achieve a large rotation angle of the extension portion by rotating a small angle. Since the sliding portion rotates at a small angle, the thickness of the slide groove corresponding to the rotating portion can be made thin, thereby reducing the overall thickness of the folding hinge. The synchronization structure in this scheme is gear synchronization, which needs to be improved.

[0004] The present invention overcomes the shortcomings of the prior art and provides a flexible screen hinge opening and closing mechanism, which can replace the existing gear synchronization structure and further reduce the thickness of the hinge. Summary of the invention

[0005] The main purpose of the present invention is to provide a flexible screen hinge opening and closing mechanism, comprising a plurality of opening and closing units, wherein the plurality of opening and closing units are synchronously opened and closed through a linkage assembly; The opening and closing unit comprises a base, the base is provided with two parallel shaft cores, two sides of the base are respectively hinged to the rotating part, and the two shaft cores respectively pass through the corresponding rotating parts on the same side; The shaft core passes through the sliding block, and the contact surface between the sliding block and the rotating block is spiral-shaped; when the rotating part on one side rotates around the shaft core to which it is connected, the sliding block is driven to move axially along the shaft core, and the sliding block drives the rotating part on the other side to rotate synchronously around the shaft core to which it is connected.

[0006] Optionally, the rotating part includes a fixing plate, an upper torsion arm, a lower torsion arm and a track plate; the fixing plate is slidably connected to the upper torsion arm, the lower torsion arm and the track plate, the track plate is slidably connected to the base, and the track plate is hinged to 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, the contact surface of the head end of the sliding block with the upper torsion arm is spiral, and the contact surface of the tail end of the sliding block with the lower torsion arm is spiral.

[0007] Optionally, the fixing plate is provided with a first guiding groove and a second guiding groove; The top of the track plate is connected to the first guiding groove in a matching manner, and the tail of the track plate is slidably connected to the base; The sides of the upper torsion arm and the lower torsion arm are connected to the second guiding groove in a matching manner, and the adjacent sides of the upper torsion arm and the lower torsion arm are connected by a sliding pin.

[0008] Optionally, the lower torsion arm is connected to the shaft core through a first rotating cylinder, the upper torsion arm is connected to the shaft core through a second rotating cylinder, the sliding block is located between the first rotating cylinder and the second rotating cylinder, the contact surface of the first rotating cylinder with the tail end of the sliding block is spiral, and the contact surface of the second rotating cylinder with the head end of the sliding block is spiral.

[0009] Optionally, a spring is sleeved on the shaft core, 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.

[0010] Optionally, a convex block is arranged between the spring and the second rotating cylinder, the convex block slides along the shaft core, the convex block connects the two shaft cores, and the contact surface of the convex block with the second rotating cylinder is a climbing inclined surface.

[0011] Optionally, the base is provided with an arc groove, the tail of the track plate is provided with an arc sliding surface, the arc sliding surface is connected to the arc groove in a matching manner, and a stop is arranged in the arc section of the arc groove.

[0012] Optionally, the linkage assembly includes a floating plate, a cover plate and a connecting bracket, 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 bracket is arranged on the front surface of the opening and closing unit for connecting the opening and closing unit.

[0013] Optionally, the head end of the shaft core is slidably connected to the base through a C-shaped buckle, the tail end of the shaft core is fixedly connected to the cover plate through a shaft core bracket, and the shaft core is hinged to the shaft core bracket.

[0014] Optionally, the back surface of the fixing plate is fixedly connected to a support frame for mounting a flexible screen.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The flexible screen hinge opening and closing mechanism provided by the present invention realizes opening and closing through an opening and closing unit, and realizes synchronous opening and closing of multiple opening and closing units through a linkage component. The symmetrically arranged rotating parts in the opening and closing unit realize synchronous rotation through sliding blocks. Since the contact surface between the rotating part and the sliding block is spiral, when one side of the rotating part rotates, under the action of the spiral contact surface, the sliding block is pushed to move along the axis, thereby driving the other side of the rotating part to rotate synchronously. This synchronous structure can further reduce the thickness of the entire opening and closing mechanism compared with the gear synchronous transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the figures in the drawings do not constitute a proportional limitation.

[0017] Figure 1 Schematic diagram of the opening and closing unit of the flexible screen hinge opening and closing mechanism according to an embodiment of the present invention; Figure 2 Top view of the opening and closing unit of the flexible screen hinge opening and closing mechanism according to an embodiment of the present invention; Figure 3 Explosion of the opening and closing unit of the flexible screen hinge opening and closing mechanism according to an embodiment of the present invention Figure 1 ; Figure 4 Explosion of the opening and closing unit of the flexible screen hinge opening and closing mechanism according to an embodiment of the present invention Figure 2 ; Figure 5 Schematic diagram of the rotating part, sliding block and axis core of the opening and closing unit of the flexible screen hinge opening and closing mechanism according to an embodiment of the present invention; Figure 6 Cross-sectional view of the opening and closing unit of the flexible screen hinge opening and closing mechanism according to an embodiment of the present invention; Figure 7 Schematic diagram of the folded state of the opening and closing unit of the flexible screen hinge opening and closing mechanism according to an embodiment of the present invention; Figure 8 Cross-sectional view of the folded state of the opening and closing unit of the flexible screen hinge opening and closing mechanism according to an embodiment of the present invention; Figure 9 Explosion schematic diagram of the floating plate and the opening and closing unit of the flexible screen hinge opening and closing mechanism according to an embodiment of the present invention; Figure 10 Schematic diagram of the unfolded state of the flexible screen hinge opening and closing mechanism according to an embodiment of the present invention; Figure 11 Schematic diagram of the folded state of the flexible screen hinge opening and closing mechanism according to an embodiment of the present invention; Figure 12 Exploded view schematic diagram of the flexible screen hinge opening and closing mechanism embodiment of the present invention.

[0018] Reference numerals: 100 - Opening and closing unit; 110 - Base; 111 - Arc groove; 120 - Axle core; 121 - Spring; 122 - Bump; 123 - C - type buckle; 124 - Axle core bracket; 130 - Rotating part; 131 - Fixed plate; 1311 - First guiding groove; 1312 - Second guiding groove; 1313 - Trajectory groove; 132 - Upper torsion arm; 1321 - Second rotating cylinder; 133 - Lower torsion arm; 1331 - First rotating cylinder; 134 - Trajectory plate; 1341 - Arc sliding surface; 1342 - Guiding block; 1343 - Rotating shaft cylinder; 135 - Link; 1351 - Third rotating cylinder; 136 - Sliding bolt; 140 - Sliding block; 141 - Sleeve; 142 - Connecting part; 143 - Spiral surface; 200 - Linkage assembly; 210 - Floating plate; 211 - Hinge hole; 212 - Slider; 220 - Cover plate; 230 - Support frame; 240 - Connecting bracket. Detailed implementation manners

[0019] For the convenience of understanding the present invention, the present invention will be described in more detail below with reference to the drawings and specific embodiments. It should be noted that when an element is expressed as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is expressed as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The terms "vertical", "horizontal", "left", "right", "inside", "outside" and similar expressions used in this specification are only for the purpose of illustration. In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating relative importance or implicitly indicating the quantity of the indicated technical features. Thus, unless otherwise specified, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features; the meaning of "multiple" is two or more. The term "including" and any deformation thereof mean non - exclusive inclusion, and there may be or be added one or more other features, integers, steps, operations, units, components and / or their combinations.

[0020] In addition, unless otherwise clearly defined and limited, the terms "install", "connect", and "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or the internal communication of two components. All technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not applicable to limiting the present invention. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0021] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] As Figures 1-12 shown, it is a schematic diagram of an embodiment of a flexible screen hinge opening and closing mechanism provided by the present invention.

[0023] Please refer to Figures 1-12 , this embodiment is used to realize the opening and closing of a flexible screen, and is particularly suitable for the opening and closing of an OLED display device. It includes a plurality of opening and closing units 100, and the plurality of opening and closing units 10 are synchronously opened and closed through a linkage component 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 device. In this embodiment, specifically, three opening and closing units 100 are connected in series. The opening and closing unit 100 includes a base 110, and the base 110 is provided with two parallel axis cores 120. Both sides of the base 110 are respectively hinged to a rotating part 130, and the two axis cores 120 respectively pass through the corresponding rotating parts 130 on the same side. The rotating parts 130 on both sides rotate around the axis cores 120 to which they are connected respectively.

[0024] The axis core 120 passes through a sliding block 140. The contact surface between the sliding block 140 and the rotating part 130 is spiral. The sliding block 140 moves along the axial direction of the axis core 120, so its spiral contact surface always maintains a fixed orientation. When one side of the rotating part 130 rotates around the axis core 120 to which it is connected, the spiral contact surface between the rotating part 130 and the sliding block 140 is in mutual contact. 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 axially along the axis core 120. Correspondingly, the linear movement of the sliding block 140 drives the rotating part 130 on the other side to rotate synchronously around the axis core 120 to which it is connected, thereby realizing the synchronous rotation and opening and closing of the rotating parts 130 on both sides.

[0025] The sliding block 140 specifically includes two sleeves 141. The circumferential surfaces of the two sleeves 141 are connected by a connecting portion 142. The two sleeves 141 are parallel to each other and are an integral structure with the connecting portion 142. Two shaft cores 120 respectively pass through the two sleeves 141. Spiral surfaces 143 are respectively provided at both ends of the sleeves 141. The shape of the spiral surface 143 matches the shape of the spiral surface 143 of the rotating portion 130. Based on the installation method and structure of the sliding block 140 and the shaft core 120, the spiral surface 143 of the sliding block 140 itself does not rotate around the shaft core 120. In order to keep the spiral surface of the sliding block 140 in matching contact with the spiral surface of the rotating portion 130, during the rotation of one side of the rotating portion 130, the sliding block 140 is pushed to move along the axial direction of the shaft core 120. The symmetric structure of the sliding block 140 itself will drive the rotating portion 130 on the other side that matches it to synchronously turn inwards or outwards.

[0026] In an embodiment, the rotating portion 130 includes a fixing plate 131, an upper torsion arm 132, a lower torsion arm 133, and a track plate 134. The fixing plate 131 is slidably connected to the upper torsion arm 132, the lower torsion arm 133, and the track plate 134. The track plate 134 is slidably connected to the base 110. The track plate 134 and the lower torsion arm 133 are hinged by 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 head end (i.e., the head end of the sleeve 141) of the sliding block 140 and the upper torsion arm 132 is spiral-shaped. 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 spiral-shaped.

[0027] The fixing plate 131 is used to connect the upper torsion arm 132, the lower torsion arm 133, and the track plate 134, so that the upper torsion arm 132, the lower torsion arm 133, and the track plate 134 rotate synchronously. The track plate 134 is slidably connected to the base 110 and does not generate displacement in the axial direction of the shaft core 120. The track plate 134 and the lower torsion arm 133 are hinged by a connecting rod 135, and the lower torsion arm 133 does not generate displacement 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 fixing plate 131 drives the upper torsion arm 132, the lower torsion arm 133, and the track plate 134 to rotate, under the action of the spiral contact surface between the lower torsion arm 133 and the sliding block 140, the sliding block 140 is driven to move along the axial direction of the shaft core 120, and the sliding block 140 then 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 moving range of the sliding block 140.

[0028] Further, the fixing plate 131 is provided with a first guiding groove 1311 and a second guiding groove 1312. The top of the track plate 134 is matingly connected to the first guiding groove 1311, and the tail of the track plate 134 is slidably connected to the base 110, specifically by means of an arc-shaped sliding surface 1341 slidingly connected to the base 110. The first guiding groove 1311 is used for guiding and limiting the movement of the track plate 134, and the setting direction of the first guiding groove 1311 is the same as the rotation direction of the track plate 134.

[0029] The setting direction of the second guiding groove 1312 is parallel to the radial direction of the shaft core 120. The non-adjacent sides of the upper torsion arm 132 and the lower torsion arm 133 are respectively matingly connected to both sides of the second guiding groove 1312, and the adjacent sides of the upper torsion arm 132 and the lower torsion arm 133 are connected by a sliding pin 136. The upper torsion arm 132 and the lower torsion arm 133 are located within the same second guiding groove 1312. The second guiding 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 guiding groove 1312 has a margin for the upper torsion arm 132 to move 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 restricted between the upper torsion arm 132 and the lower torsion arm 133 by the sliding pin 136, and the upper torsion arm 132 and the lower torsion arm 133 slide within the second guiding groove 1312 when rotating.

[0030] Specifically, the lower torsion arm 133 is connected to the shaft core 120 through a first rotating cylinder 1331, the upper torsion arm 132 is connected to the shaft core 120 through a second rotating cylinder 1321, 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 spiral-shaped, and the contact surface between the second rotating cylinder 1321 and the head end of the sliding block 140 is spiral-shaped.

[0031] In an embodiment, a spring 121 is sleeved on the shaft core 120. The number of the second rotating cylinders 1321 is two, a spring 121 is provided between the two second rotating cylinders 1321, and a spring 121 is provided between the second rotating cylinder 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 during the opening and closing process to maintain the opening and closing at a certain angle.

[0032] Further, a convex block 122 is provided between the spring 121 and the second rotating cylinder 1321. The convex block 122 slides along the shaft core 120. The convex block 122 connects two shaft cores 120, and the contact surface between the convex block 122 and the second rotating cylinder 1321 is a climbing inclined surface. By combining the elastic force of the spring 121 through the convex block 122, the opening and closing unit 100 can complete the actions of automatic closing or automatic unfolding when rotating to a certain angle.

[0033] Specifically, the number of bumps 122 is three. A spring 121 is provided between the second rotating cylinders 1321, and a bump 122 is provided between each end of the spring 121 and the second rotating cylinder 1321. A spring 121 and a bump 122 are provided between the second rotating cylinder 1321 and the tail end of the shaft core 120, and the bump 122 is located between the second rotating cylinder 1321 and the spring 121.

[0034] In one embodiment, the base 110 is provided with an arc-shaped groove 111, and the tail of the track plate 134 is provided with an arc-shaped sliding surface 1341. The arc-shaped sliding surface 1341 is connected to the arc-shaped groove 111 in a matching manner. A stop is provided within the arc-shaped interval of the arc-shaped groove 111. The angle interval is mainly restricted by the base 110 and the lower torsion arm 133. The arc-shaped groove 111 of the track plate 134 and the base 110 are mainly used for testing to prevent the arc-shaped groove 111 from disengaging.

[0035] The rotation interval is specifically 0 - 180 degrees. As Figure 7 、 Figure 8 and Figure 11 shown, when the rotation interval is 0 degrees, 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 starting points of the top of the spiral surfaces at both ends of the sliding block 140 are respectively in contact with the starting points of the top of the spiral surfaces of the upper torsion arm 132 and the lower torsion arm 133. As Figure 1 、 Figure 2 、 Figure 6 and Figure 10 shown, when the rotation interval is 180 degrees, the opening and closing unit 100 is in a completely open state. At this time, the arc-shaped sliding surface 1341 is located at the starting point of the arc-shaped groove 111, and the ending points of the bottom of the spiral surfaces at both ends of the sliding block 140 are respectively in contact with the ending points of the bottom of the spiral surfaces of the upper torsion arm 132 and the lower torsion arm 133.

[0036] Specifically, the top of the track plate 134 extends to form a guiding block 1342 that is connected to the first guiding groove 1311 in a matching manner. When the track plate 134 rotates, the guiding block 1342 slides within the first guiding groove 1311. The tail of the track plate 134 is provided with an arc-shaped sliding surface 1341 that is slidably connected to the arc-shaped groove 111. A bent structure extends from one side of the track plate for installing a connecting rod 135 that is hinged to the lower torsion arm 133. A rotating shaft cylinder 1343 is provided between the top and the tail of the track plate 134 for installing a rotating shaft that is hinged to the floating plate 210. The connecting rod 135 specifically includes two third rotating cylinders 1351 arranged in parallel. The two third rotating cylinders 1351 are connected to each other, and the two third rotating cylinders 1351 are respectively hinged to the track plate 134 and the lower torsion arm 133 through installed rotating shafts.

[0037] In one embodiment, as Figures 9-12As shown, the linkage component 200 includes a floating plate 210, a cover plate 220, and a connecting bracket 240. The floating plate 210 is hinged to the front surface of the track plate 134, and the cover plate 220 is fixedly connected to the back surface of the base 110, specifically by screws. The connecting bracket 240 is provided on the front surface of the opening and closing unit 100 for connecting the opening and closing unit 100. In this embodiment, it is used to synchronously connect three opening and closing units 100 to cover the blank positions and support the flexible screen. The floating plate 210 is hinged to the rotating shaft installed on the rotating shaft cylinder 1343 of the track plate 134 through a hinge hole 211. The hinge hole 211 is a long strip hole with a certain width, and the hinge point between the floating plate 210 and the track plate 134 can have a moving range in the hinge hole 211 to adapt to the rotation of the opening and closing unit 100. Trajectory grooves 1313 are provided at both ends of the fixing plate 131, and sliding blocks 212 corresponding to the trajectory grooves 1313 are provided at both ends of the floating plate 210. The relative displacement between the rotating part 130 and the floating plate 210 during rotation is limited by the trajectory grooves 1313 and the sliding blocks 212. The sliding blocks 212 are specifically arc-shaped structures.

[0038] In one embodiment, the head end of the shaft core 120 is hinged to the base 110 through a C-shaped buckle 123, the tail end of the shaft core 120 is fixedly connected to the cover plate 220 through a shaft core bracket 124, and the shaft core 120 is hinged to the shaft core bracket 124.

[0039] In one embodiment, the back surface of the fixing plate 131 is fixedly connected to the support frame 230, specifically by screw connection. The support frame 230 is used to install the flexible screen.

[0040] The specific process of rotation in this embodiment is as follows: The fixing plate 131, the floating plate 21, the upper torsion arm 132, the lower torsion arm 133, the connecting rod 135, and the track plate 134 cooperate and link. The sliding block 140 enables the rotating parts 130 on both sides to rotate synchronously. The floating plate 210 connects the three opening and closing units 100 in series. Rotate the left and right support frames 230, and the sliding block 140 slides up and down. The upper torsion arm 132 and the lower torsion arm 133 push the convex block 122 to squeeze the spring 121, causing torsion in the product. The contact surfaces of the upper torsion arm 132, the lower torsion arm 133, and the convex block 122 are designed with a climbing slope angle, enabling the product to automatically close or automatically unfold at a certain angle. The base 110 is provided with an arc-shaped groove 111, so that the opening angle of the opening and closing mechanism is 180°, and the closing angle is 0°.

[0041] The hinges of flexible screens in the existing market rely on gears for synchronous transmission. Because the gears need a certain gap in the matching to move, if the matching is tight, the whole machine will feel abnormal or unable to rotate. If the matching is loose, the whole machine will be out of position and cause large shaking, which will make the user experience poor. This embodiment uses a sliding block for matching transmission. The sliding block and the upper torque arm have a spiral contact surface. During the rotation process, the spirals contact and stick to each other, which greatly improves the feel.

[0042] The thickness of the entire machine can also be reduced, with a total thickness of 8.4mm. When unfolded, the thickness of a single screen is 4.2mm, making the entire machine thinner and lighter, with a better experience and sense of technology. At the same time, the weight of the entire machine is reduced, making it easier for users to carry.

[0043] The present invention also provides an embodiment of a foldable electronic device, which includes the above-mentioned flexible screen hinge opening and closing mechanism embodiment, and also includes a flexible screen and a control component. The foldable electronic device can specifically be a foldable screen mobile phone, a laptop computer, a tablet computer and other products.

[0044] To sum up, the embodiments provided by the present invention realize opening and closing through an opening and closing unit, realize synchronous opening and closing of multiple opening and closing units through a linkage assembly, and the symmetrically arranged rotating parts in the opening and closing units realize synchronous rotation through a sliding block. Since the contact surface between the rotating part and the sliding block is spiral, when the rotating part on one side rotates, under the action of the spiral contact surface, the sliding block is pushed to move along the axis core, thereby driving the rotating part on the other side to rotate synchronously. Compared with gear synchronous transmission, this synchronous structure can further reduce the thickness of the entire opening and closing mechanism.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flexible screen hinge opening and closing mechanism, characterized in that, It includes a plurality of opening and closing units, and the plurality of opening and closing units are synchronously opened and closed through a linkage component; The opening and closing unit includes a base, and the base is provided with two parallel axles. Both sides of the base are respectively hinged to a rotating part, and the two axles respectively pass through the corresponding rotating parts on the same side; The axle passes through a sliding block, and the contact surface between the sliding block and the rotating block is spiral-shaped; when one side of the rotating part rotates around the axle it is connected to, the sliding block is driven to move axially along the axle, and the sliding block drives the rotating part on the other side to rotate synchronously around the axle it is connected to.

2. The flexible screen hinge opening and closing mechanism according to claim 1, wherein, The rotating part includes a fixing plate, an upper torsion arm, a lower torsion arm and a track plate; the fixing plate is slidably connected to the upper torsion arm, the lower torsion arm and the track plate, the track plate is slidably connected to the base, and the track plate is hinged to the lower torsion arm through a connecting rod; the axle 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, the contact surface between the head end of the sliding block and the upper torsion arm is spiral-shaped, and the contact surface between the tail end of the sliding block and the lower torsion arm is spiral-shaped.

3. The flexible screen hinge opening and closing mechanism according to claim 2, characterized in that, The fixing plate is provided with a first guiding groove and a second guiding groove; The top of the track plate is connected to the first guiding groove in a matching manner, and the tail of the track plate is slidably connected to the base; The sides of the upper torsion arm and the lower torsion arm are connected to the second guiding groove in a matching manner, and the adjacent sides 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 to the axle through a first rotating cylinder, the upper torsion arm is connected to the axle through a second rotating cylinder, the sliding block is located between the first rotating cylinder and the second rotating cylinder, the contact surface between the first rotating cylinder and the tail end of the sliding block is spiral-shaped, and the contact surface between the second rotating cylinder and the head end of the sliding block is spiral-shaped.

5. The flexible screen hinge opening and closing mechanism according to claim 4, characterized in that A spring is sleeved on the axle. 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 axle.

6. The flexible screen hinge opening and closing mechanism according to claim 5, characterized in that, A convex block is arranged between the spring and the second rotating cylinder. The convex block slides along the axle. The convex block connects the two axles, and the contact surface between the convex block and the second rotating cylinder is a climbing inclined surface.

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 track plate is provided with an arc-shaped sliding surface, the arc-shaped sliding surface is connected to the arc-shaped groove in a matching manner, and a stopper is arranged in the arc-shaped section of the arc-shaped groove.

8. The flexible screen hinge opening and closing mechanism according to claim 2, characterized in that, The linkage component includes a floating plate, a cover plate and a connecting bracket. The floating plate is hinged to the front of the track plate, the cover plate is fixedly connected to the back of the base, and the connecting bracket is arranged on the front of the opening and closing unit 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 axle is hinged to the base through a C-shaped buckle, the tail end of the axle is fixedly connected to the cover plate through an axle bracket, and the axle is hinged to the axle bracket.

10. The flexible screen hinge opening and closing mechanism according to claim 8, wherein The back of the fixing plate is fixedly connected to a support frame for installing a flexible screen.

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