An outer folding and unfolding mechanism and a folding electronic product

Abstract

The utility model relates to hinge opening and closing technical field discloses a kind of outer folding opening and closing mechanism and folding electronic product, and opening and closing mechanism includes opening and closing part and mounting part, opening and closing part two sides are connected mounting part respectively, and display screen is located the outside of mounting part when two sides mounting part is closed;Opening and closing part includes multiple opening and closing units, and opening and closing unit is connected by linkage assembly between;Opening and closing unit includes two symmetrically arranged shaft core, base, synchronous block, rotating part and limiting portion, the contact surface of synchronous block and rotating part is spiral surface, limiting portion is connected with base, limiting portion side is slidably connected with linkage assembly, the other side is slidably connected with mounting part, and limiting portion is used to limit the rotation interval of rotating part.The scheme can make screen fold outward, and screen is located the outside of folding surface after folding, to realize screen outer folding, and the screen after outer folding can continue to use, with the advantage of prolonging folding screen life.

Description

Technical Field

[0001] This utility model relates to the field of hinge opening and closing technology, and in particular to an outward folding opening and closing mechanism and a folding electronic product. Background Technology

[0002] Foldable display devices consist of an OLED display fixed within a bending structure. When users do not need to view the flexible display, they can use this bending structure to fold the OLED display into a shape with varying thickness. The folding hinge is a crucial structure for enabling the folding function of a foldable screen. Improving the folding hinge structure to make the flexible foldable screen thinner is one of the key directions for future development of flexible foldable screens. Foldable display devices are already widely used in various electronic products, such as mobile phones, tablets, and laptops. Compared to smaller mobile phones, larger tablets and laptops require more robust hinge structures to achieve folding. Conventional folding hinges fold the flexible screen inwards, meaning the folded screen is located inside the folding surface. The current development direction for foldable electronic products is to fold the screen outwards, placing it outside the folding surface. This outward-folding screen structure allows the screen to be used in the folded state while reducing the deformation caused by folding.

[0003] Chinese patent application CN202220123027.X discloses an outward-folding hinge module, including a fixed base, a left-turning plate, a right-turning plate, and a movable base. The left-turning plate has left active cams connecting its front and rear ends, and the right-turning plate has right active cams connecting its front and rear ends. Both the left and right active cams cooperate with driven cams on the movable base. An elastic element is provided between the movable base and the fixed base. The advantages of this invention are: arranging the cam groups at both ends of the turning plates makes the entire structure symmetrical both vertically and horizontally, thus solving the problem of poor balance; the symmetrical cam groups can double the original cam translation amount, thereby obtaining greater torque. This solution needs further improvement.

[0004] This invention overcomes the shortcomings of the prior art by providing an outward folding opening and closing mechanism and a folding electronic product. The outward folding structure is more streamlined and offers greater folding flexibility. Utility Model Content

[0005] The main purpose of this utility model is to provide an outward folding opening and closing mechanism, including an opening and closing part and a mounting part. The mounting part is used to connect to the display screen. The two sides of the opening and closing part are respectively connected to the mounting parts. The opening and closing part drives the two sides of the mounting parts to open and close. When the two sides of the mounting parts are closed, the display screen is located outside the mounting part. The opening and closing part includes multiple opening and closing units, which are connected to each other by a linkage component; The opening and closing unit includes two symmetrically arranged shafts, a base, a synchronizing block, a rotating part, and a limiting part. The two ends of the shafts are respectively connected to the base, and the base is connected to the linkage assembly. One side of the rotating part is hinged to the shafts, and the other side is slidably connected to the mounting part. The two shafts pass through the synchronizing block, and the synchronizing block connects the two shafts. The contact surface between the synchronizing block and the rotating part is a helical curved surface. The limiting part is connected to the base, and one side of the limiting part is slidably connected to the linkage assembly, and the other side is slidably connected to the mounting part. The limiting part is used to limit the rotation range of the rotating part. When the rotating part on one side rotates around the shaft core to which it is connected, it drives the synchronizing block to move along the axial direction of the shaft core, and the synchronizing block drives the rotating part connected to the shaft core on the other side to rotate synchronously.

[0006] Optionally, the rotating part includes a first torque arm and a second torque arm. The inner side of the first torque arm is hinged to the shaft core through a first sleeve, and the inner side of the second torque arm is hinged to the shaft core through a second sleeve. The synchronizing block is provided between the first sleeve and the second sleeve, and the contact surface between the synchronizing block and the first sleeve and the second sleeve is a helical curved surface. The outer side of the first torque arm is bent at a predetermined angle and slidably connected to the mounting part; the outer side of the second torque arm is bent at a predetermined angle and slidably connected to the mounting part; the adjacent sides of the first torque arm and the second torque arm are connected by a pin. The connecting block of the mounting part is provided with a first linear sliding groove to accommodate the first torque arm and the second torque arm.

[0007] Optionally, the second sleeve of the second torque arm has a space in the middle to accommodate a protrusion and a spring. A protrusion is provided at each end of the spring. The protrusion includes a third sleeve and a connecting rod. The two ends of the connecting rod are respectively connected to the third sleeve. The third sleeve is connected to the shaft core. The protrusion can move along the axial direction of the shaft core. The spring is sleeved on the shaft core. The two ends of the spring are respectively in contact with one end of the third sleeve, and the other end of the third sleeve is in contact with the second sleeve. The second sleeve on the side away from the synchronizing block is also provided with the protrusion and spring. One end of the spring contacts the third sleeve, and the other end abuts against the base. The contact surface between the third sleeve and the second sleeve is an inclined plane.

[0008] Optionally, the base includes a base plate and a cover plate, multiple opening and closing units share the same base plate, the length of the base plate matches the length of the opening and closing part, the first and last ends of the shaft are respectively connected to a cover plate, the cover plate is fixedly connected to the base plate, and the limiting part is located between the base plate and the cover plate.

[0009] Optionally, a first transition plate is provided between the cover plates at both ends of the shaft core, and a second transition plate is provided between the opening and closing units. The back of the first transition plate is fixedly connected to the base plate, and the front of the first transition plate is an arc surface. The back of the second transition plate is fixedly connected to the base plate, and the front of the second transition plate is an arc surface. The back of the cover plate is fixedly connected to the base plate, and the front of the cover plate is an arc surface. The first transition plate, the second transition plate, and the cover plate have the same curvature.

[0010] Optionally, the limiting part includes an unfolding limiting part and a closing limiting part; One end of the unfolding limiting part is slidably connected to the base plate, and the other end is slidably connected to the mounting part, which is used to limit the maximum unfolding range of the opening and closing part; One end of the closing limiting part is slidably connected to the cover plate, and the other end is slidably connected to the mounting part, which is used to limit the minimum closing range of the opening and closing part.

[0011] Optionally, the unfolding limiting part includes a first curved block and a straight plate. The first curved block is connected to the straight plate. The bottom plate is provided with a first curved groove that matches the first curved block. The connecting block of the mounting part is provided with a second straight sliding groove that accommodates the sliding of the straight plate. When the opening and closing part drives the mounting parts on both sides to unfold to a horizontal position, the end of the first curved block abuts against the end of the first curved groove. The closing limiting part includes a second curved surface block and a third curved surface block. The second curved surface block and the third curved surface block are connected by a connecting plate. The second curved surface block and the third curved surface block have opposite bending directions. The cover plate is provided with a second curved surface groove that matches the second curved surface block. The connecting block of the mounting part is provided with a third curved surface groove that matches the third curved surface block. When the opening and closing part drives the mounting parts on both sides to close and overlap, the end of the second curved surface block abuts against the end of the second curved surface groove, and the end of the third curved surface block abuts against the end of the third curved surface groove.

[0012] Optionally, the mounting part includes a connecting block and a support plate. The front side of the support plate is used to mount the screen. The front edge of the support plate is provided with a mounting groove. The connecting block is disposed in the mounting groove and is fixedly connected to the support plate. Each opening and closing unit is slidably connected to one of the connecting blocks on both sides. The opening and closing unit drives the support plate to flip and fold towards its back side.

[0013] Optionally, the linkage component includes a synchronization plate and a sliding plate, wherein the synchronization plate is connected to the connecting block in the adjacent opening and closing unit; The connecting block has a first sliding groove at one end, and the sliding plate has a second sliding groove at one end that matches the first sliding groove. The sliding plate is located on the back of the connecting block and is located in the mounting groove. The first sliding groove and the second sliding groove are engaged. The length of the sliding plate is the same as the length of the base. The sliding plate is fixedly connected to the straight plate.

[0014] This utility model also provides a foldable electronic product, including the above-mentioned outward folding mechanism, wherein the electronic product is folded or unfolded by the outward folding mechanism.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The outward folding opening and closing mechanism provided by this utility model realizes the synchronous opening and closing of the rotating parts on the left and right sides of the opening and closing unit through the synchronization block. Compared with the gear synchronous transmission structure, the structure of this solution is more concise. The rotation angle and rotation direction of the rotating part are limited by the limiting part, so that the screen folds outward. After folding, the screen is located on the outside of the folding surface, thereby realizing the outward folding of the screen. The screen can continue to be used after outward folding, which has the advantage of extending the life of the folding screen. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0017] Figure 1 This is a schematic diagram of an embodiment of the outward folding opening and closing mechanism of this utility model.

[0018] Figure 2 This is a schematic diagram of the combination of the opening and closing part and the mounting part in an embodiment of the outward folding opening and closing mechanism of this utility model.

[0019] Figure 3 This is a top view of the combination of the opening and closing part and the mounting part in an embodiment of the outward folding opening and closing mechanism of this utility model.

[0020] Figure 4 This is an exploded view of the combination of the opening and closing part and the mounting part in an embodiment of the outward folding opening and closing mechanism of this utility model.

[0021] Figure 5 This is a front view of the opening and closing unit of an embodiment of the outward folding opening and closing mechanism of this utility model.

[0022] Figure 6 This is an exploded view of the front of the opening and closing unit of an embodiment of the outward folding opening and closing mechanism of this utility model.

[0023] Figure 7 This is a schematic diagram of the back of the opening and closing unit in an embodiment of the outward folding opening and closing mechanism of this utility model.

[0024] Figure 8 This is an exploded view of the back of the opening and closing unit in an embodiment of the outward folding opening and closing mechanism of this utility model.

[0025] Figure 9 This is a front view of the combination of the opening and closing unit and the connecting block in an embodiment of the outward folding opening and closing mechanism of this utility model.

[0026] Figure 10 This is a schematic diagram of the back of the combination of the opening and closing unit and the connecting block in an embodiment of the outward folding opening and closing mechanism of this utility model.

[0027] Figure 11 This is an exploded view of the back of the combination of the opening and closing unit and the connecting block in an embodiment of the outward folding opening and closing mechanism of this utility model.

[0028] Figure 12 This is a folding diagram of an embodiment of the outward folding opening and closing mechanism of this utility model.

[0029] Figure label: 1-Opening and closing part; 10-Opening and closing unit; 11-Shaft core; 12-Base; 121-Base plate; 1211-First curved groove; 122-Cover plate; 1221-Second curved groove; 123-First transition plate; 124-Second transition plate; 13-Synchronizing block; 14-Rotating part; 141-First torque arm; 1411-First sleeve; 142-Second torque arm; 1421-Second sleeve; 143-Pin; 144-Protrusion; 1441-Third sleeve; 1442-Connecting rod; 145-Spring; 5-Limiting part; 151-Expanding limiting part; 1511-First curved surface block; 1512-Straight plate; 152-Closed limiting part; 1521-Second curved surface block; 1522-Third curved surface block; 1523-Connecting plate; 2-Mounting part; 21-Connecting block; 211-First linear sliding groove; 212-Second linear sliding groove; 213-Third curved surface groove; 214-First sliding groove; 22-Bearing plate; 221-Mounting groove; 3-Linkage component; 31-Synchronization plate; 32-Sliding plate; 321-Second sliding groove. Detailed Implementation

[0030] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only. In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implying the number of indicated technical features. Thus, unless otherwise stated, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "multiple" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, where one or more other features, integers, steps, operations, units, components, and / or combinations thereof may be present or added.

[0031] Furthermore, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; as a direct connection or an indirect connection through an intermediate medium, or as a connection within two components. All technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0032] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] like Figure 1-12 The diagram shown is a schematic representation of an embodiment of the outward folding opening and closing mechanism provided by this utility model.

[0034] Please refer to Figure 1-12 This embodiment is used to realize the screen folding of electronic products. It includes an opening and closing part 1 and a mounting part 2. The mounting part 2 is used to connect the display screen. The two sides of the opening and closing part 1 are respectively connected to the mounting part 2. The opening and closing part 1 drives the two mounting parts 2 to open and close. When the two mounting parts 2 are folded and closed, the display screen is located outside the mounting part 2. Since the screen is located outside the flip surface after folding, the screen after folding can continue to be used, that is, it can be used without unfolding, thus expanding the usage scenarios of foldable electronic products.

[0035] The opening / closing part 1 includes multiple opening / closing units 10, which are connected by a linkage component 3. In this embodiment, there are two opening / closing units 10, which open and close synchronously via the linkage component 3. Each opening / closing unit 10 includes two symmetrically arranged shafts 11, a base 12, a synchronization block 13, a rotating part 14, and a limiting part 15. The two ends of the shafts 11 are connected to the base 12, which is connected to the linkage component 3. The base 12 is used to fix the shafts 11, and the shafts 11 are used to support and connect the synchronization block 13 and the rotating part 14. One side of the rotating part 14 is hinged to the shafts 11, and the other side is slidably connected to the mounting part 20. The two shafts 11 pass through the synchronization block 13, which connects the two shafts 11. The contact surface between the synchronization block 13 and the rotating part 14 is a helical curved surface.

[0036] When one rotating part 14 rotates around the shaft 11 it is connected to, it drives the synchronizing block 13 to move along the axial direction of the shaft 11. The synchronizing block 13 then drives the rotating part 14 connected to the other shaft 11 to rotate synchronously. Specifically, each of the two shafts 11 is connected to a rotating part 14, namely the left rotating part 14 and the right rotating part 14, and the left and right rotating parts 14 are symmetrically arranged. Taking the left rotating part 14 as an example, when force is applied to the left rotating part 14 to rotate, since the contact surface between the rotating part 14 and the synchronizing block 13 is a helical surface, the rotation of the left rotating part 14 will cause the contact surface with the helical surface of the synchronizing block 13 to rotate. In order to maintain contact between the contact surface of the synchronizing block 13 and the rotating part 14, the synchronizing block 13 will move along the axial direction of the shaft 11. The movement of the synchronizing block 13 then drives the right rotating part 14 to rotate synchronously with the left rotating part 14. The process of applying force to the right rotating part 14 is similar to the above rotation process and will not be described again.

[0037] The limiting part 15 is connected to the base 12. One side of the limiting part 15 is slidably connected to the linkage component 3, and the other side is slidably connected to the mounting part 2. The limiting part 15 is used to limit the rotation range of the rotating part 14. Specifically, the limiting part 15 limits the maximum unfolding range and the minimum folding range of the opening and closing unit 10. The maximum unfolding range is when the opening and closing part 1 drives the mounting part 2 to unfold and be in a horizontal state. The minimum unfolding range is when the opening and closing part 1 drives the mounting part 2 to close and fold together.

[0038] In one embodiment, the rotating part 14 includes a first torque arm 141 and a second torque arm 142. The inner side of the first torque arm 141 is hinged to the shaft core 11 through a first sleeve 1411, and the inner side of the second torque arm 142 is hinged to the shaft core 11 through a second sleeve 1421. A synchronizing block 13 is provided between the first sleeve 1411 and the second sleeve 142. The contact surface between the synchronizing block 13 and the end of the first sleeve 1411 and the end of the second sleeve 1421 is a helical curved surface.

[0039] The outer side of the first torque arm 141 is bent at a predetermined angle and slidably connected to the mounting part 2. The outer side of the second torque arm 142 is also bent at a predetermined angle and slidably connected to the mounting part 2. The adjacent sides of the first torque arm 141 and the second torque arm 142 are connected by a pin 143, allowing the first torque arm 141 and the second torque arm 142 to have a certain amount of movement along the axial direction of the shaft core 11. The connecting block 21 of the mounting part 2 is provided with a first linear sliding groove 211 to accommodate the first torque arm 141 and the second torque arm 142.

[0040] Specifically, taking the rotation of the first torque arm 141 on the left as an example, when the first torque arm 141 on the left rotates around the shaft core 11, since the contact surface with the synchronizing block 13 is a helical curved surface, the synchronizing block 13 will move along the axial direction of the shaft core 11 during the rotation of the first sleeve 1411, thereby driving the second torque arm 142 on the left to rotate synchronously, as well as the first torque arm 141 and the second torque arm 142 on the right to rotate synchronously. Similarly, the synchronous rotation process is similar when force is applied to the second torque arm 142 on the left, the first torque arm 141 on the right, or the second torque arm 142 on the right.

[0041] In one embodiment, the second sleeve 1421 of the second torque arm 142 has a space in the middle to accommodate a protrusion 144 and a spring 145. A protrusion 144 is provided at each end of the spring 145. Each protrusion 144 includes a third sleeve 1441 and a connecting rod 1442. Both ends of the connecting rod 1442 are connected to the third sleeve 1441, which is connected to the shaft core 11. The protrusion 144 can move along the axial direction of the shaft core 11. The spring 145 is sleeved on the shaft core 11, with both ends contacting one end of the third sleeve 1441, and the other end of the third sleeve 1441 contacting the second sleeve 1421. The end of the second sleeve 1421 on the side away from the synchronizing block 13 also has a protrusion 144 and a spring 145. One end of the spring 145 contacts the third sleeve 1441, and the other end abuts against the base 12. The contact surface between the third sleeve 1441 and the second sleeve 1421 is an inclined surface. The function of the protrusion 144 and the spring 145 is to maintain the tactile feedback during the rotation of the rotating part 14, and also to keep the rotating part 14 at different angles when it rotates.

[0042] In one embodiment, the base 12 includes a base plate 121 and a cover plate 122. Multiple opening and closing units 10 share the same base plate 121. The length of the base plate 121 matches the length of the opening and closing part 1. A cover plate 122 is connected to each end of the shaft core 11. The cover plate 122 is fixedly connected to the base plate 121. A limiting part 15 is located between the base plate 121 and the cover plate 122. The base plate 121 is used for supporting and connecting the rotating part 14 and the limiting part 15, as well as for supporting the connection between the multiple opening and closing units 10. The cover plate 122 is used for fixing the shaft core 11 and for installing and positioning the limiting part 15.

[0043] Furthermore, a first transition plate 123 is provided between the cover plates 122 at both ends of the shaft core 11, and a second transition plate 124 is provided between the opening and closing units 10. The back of the first transition plate 123 is fixedly connected to the base plate 121, and the front of the first transition plate 123 is curved. The back of the second transition plate 124 is fixedly connected to the base plate 121, and the front of the second transition plate 124 is curved. The back of the cover plate 122 is fixedly connected to the base plate 121, and the front of the cover plate 122 is curved. The curved surfaces of the first transition plate 123, the second transition plate 124, and the cover plate 122 have the same curvature. The first transition plate 123 is used to cover the connection between the rotating part 14 and the base plate 121, while maintaining a continuous smooth surface between the cover plates 122. The second transition plate 124 is used to maintain a continuous smooth surface between adjacent opening and closing units 10, and serves to support the screen, preventing the screen covering the front of the opening and closing unit 10 from concave inward.

[0044] In one embodiment, the limiting part 15 includes an unfolding limiting part 151 and a closing limiting part 152. One end of the unfolding limiting part 151 is slidably connected to the base plate 121, and the other end is slidably connected to the mounting part 2, thereby limiting the maximum unfolding range of the opening and closing part 1. One end of the closing limiting part 152 is slidably connected to the cover plate 122, and the other end is slidably connected to the mounting part 2, thereby limiting the minimum closing range of the opening and closing part 1. Specifically, the limiting part 15 limits the maximum unfolding range and the minimum folding range of the opening and closing unit 10. The maximum unfolding range is when the opening and closing part 1 drives the mounting part 2 to unfold and reach a horizontal state, and the minimum unfolding range is when the opening and closing part 1 drives the mounting part 2 to close and fold together.

[0045] Specifically, the unfolding limiting part 151 includes a first curved surface block 1511 and a straight plate 1512. The first curved surface block 1511 is connected to the straight plate 1512. The base plate 121 is provided with a first curved surface groove 1211 that matches the first curved surface block 1511. The connecting block 21 of the mounting part 2 is provided with a second linear sliding groove 212 that accommodates the sliding of the straight plate 1512. When the opening and closing part 1 drives the mounting parts 2 on both sides to unfold to a horizontal position, the end of the first curved surface block 1511 abuts against the end of the first curved surface groove 1211, thereby limiting the maximum angle when the opening and closing unit 10 unfolds. The first curved surface block 1511 has a broken notch in the middle. The notches of the first curved surface block 1511 on the left and the first curved surface block 1511 on the right are staggered to maintain a large rotational surface range of the first curved surface block 1511 when the base plate 121 is narrow.

[0046] The closing limiting part 152 includes a second curved surface block 1521 and a third curved surface block 1522. The second curved surface block 1521 and the third curved surface block 1522 are connected by a connecting plate 1523. The second curved surface block 1521 and the third curved surface block 1522 have opposite bending directions. The cover plate 122 is provided with a second curved surface groove 1221 that matches the second curved surface block 1521. The connecting block 21 of the mounting part 2 is provided with a third curved surface groove 213 that matches the third curved surface block 1522. When the opening and closing part 1 drives the two mounting parts 2 to close and overlap, the end of the second curved surface block 1521 abuts against the end of the second curved surface groove 1221, and the end of the third curved surface block 1522 abuts against the end of the third curved surface groove 213, thereby limiting the minimum angle when the opening and closing unit 10 is closed.

[0047] In one embodiment, the mounting part 2 includes a connecting block 21 and a support plate 22. The front side of the support plate 22 is used to mount the screen, and the front edge of the support plate 22 is provided with a mounting groove 221. The connecting block 21 is disposed in the mounting groove 221 and is fixedly connected to the support plate 22, specifically by screws. Each opening and closing unit 10 is slidably connected to a connecting block 21 on each side. The opening and closing unit 10 drives the support plate 22 to flip and fold towards its back side. The opening and closing unit 10 drives the connecting block 21 to flip, thereby driving the entire support plate 22 and the screen connected to the support plate 22 to flip.

[0048] In one embodiment, the linkage component 3 includes a synchronization plate 31 and a sliding plate 32. The synchronization plate 31 is connected to the connecting block 21 connected to the adjacent opening and closing unit 10. The end of the connecting block 21 is provided with a first sliding groove 214, and the end of the sliding plate 32 is provided with a second sliding groove 321 that matches the first sliding groove 214. The sliding plate 32 is located on the back of the connecting block 21 and is located in the mounting groove 221. The first sliding groove 214 and the second sliding groove 321 are engaged. The length of the sliding plate 32 is the same as the length of the base 12. The sliding plate 32 is fixedly connected to the straight plate 1512, specifically by screws.

[0049] Specifically, the two ends of the sliding plate 32 are bent upward to form the second sliding groove 321. The sliding plate 32 is fixedly connected to the straight plate 1512. The sliding plate 32 and the straight plate 1512 slide synchronously in the mounting groove 221. The sliding plate 32 can ensure that multiple straight plates 1512 in the opening and closing unit 10 move synchronously.

[0050] This utility model also provides an embodiment of a foldable electronic product, including the above-described outward folding mechanism embodiment, wherein the electronic product is folded or unfolded via the outward folding mechanism. Specifically, the electronic product can be a smartphone, tablet computer, or laptop computer.

[0051] In summary, the outward folding opening and closing mechanism embodiment provided by this utility model achieves synchronous opening and closing of the rotating parts on the left and right sides of the opening and closing unit through a synchronizing block. Compared with the gear synchronous transmission structure, this solution has a more streamlined structure. By limiting the flipping angle and flipping direction of the rotating part through the limiting part, the flipping angle is folded outward. After folding, the screen is located on the outside of the flipping surface, thereby realizing the outward folding of the screen. The screen can continue to be used after outward folding, which has the advantage of extending the life of the folding screen.

[0052] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An outward folding opening and closing mechanism, characterized in that, It includes an opening and closing part and a mounting part. The mounting part is used to connect the display screen. The two sides of the opening and closing part are respectively connected to the mounting part. The opening and closing part drives the two sides of the mounting part to open and close. When the two sides of the mounting part are closed, the display screen is located outside the mounting part. The opening and closing part includes multiple opening and closing units, which are connected to each other by a linkage component; The opening and closing unit includes two symmetrically arranged shafts, a base, a synchronizing block, a rotating part, and a limiting part. The two ends of the shafts are respectively connected to the base, and the base is connected to the linkage assembly. One side of the rotating part is hinged to the shafts, and the other side is slidably connected to the mounting part. The two shafts pass through the synchronizing block, and the synchronizing block connects the two shafts. The contact surface between the synchronizing block and the rotating part is a helical curved surface. The limiting part is connected to the base, and one side of the limiting part is slidably connected to the linkage assembly, and the other side is slidably connected to the mounting part. The limiting part is used to limit the rotation range of the rotating part. When the rotating part on one side rotates around the shaft core to which it is connected, it drives the synchronizing block to move along the axial direction of the shaft core, and the synchronizing block drives the rotating part connected to the shaft core on the other side to rotate synchronously.

2. The outward folding opening and closing mechanism according to claim 1, characterized in that, The rotating part includes a first torque arm and a second torque arm. The inner side of the first torque arm is hinged to the shaft core through a first sleeve, and the inner side of the second torque arm is hinged to the shaft core through a second sleeve. The synchronizing block is provided between the first sleeve and the second sleeve, and the contact surface between the synchronizing block and the first sleeve and the second sleeve is a helical curved surface. The outer side of the first torque arm is bent at a predetermined angle and slidably connected to the mounting part; the outer side of the second torque arm is bent at a predetermined angle and slidably connected to the mounting part; the adjacent sides of the first torque arm and the second torque arm are connected by a pin. The connecting block of the mounting part is provided with a first linear sliding groove to accommodate the first torque arm and the second torque arm.

3. The outward folding opening and closing mechanism according to claim 2, characterized in that, The second sleeve of the second torque arm has a space in the middle to accommodate a protrusion and a spring. A protrusion is provided at each end of the spring. The protrusion includes a third sleeve and a connecting rod. The two ends of the connecting rod are respectively connected to the third sleeve. The third sleeve is connected to the shaft core. The protrusion can move along the axial direction of the shaft core. The spring is sleeved on the shaft core. The two ends of the spring are respectively in contact with one end of the third sleeve, and the other end of the third sleeve is in contact with the second sleeve. The second sleeve on the side away from the synchronizing block is also provided with the protrusion and spring. One end of the spring contacts the third sleeve, and the other end abuts against the base. The contact surface between the third sleeve and the second sleeve is an inclined plane.

4. The outward folding opening and closing mechanism according to claim 1, characterized in that, The base includes a base plate and a cover plate. Multiple opening and closing units share the same base plate. The length of the base plate matches the length of the opening and closing part. A cover plate is connected to each end of the shaft core. The cover plate is fixedly connected to the base plate. The limiting part is located between the base plate and the cover plate.

5. The outward folding opening and closing mechanism according to claim 4, characterized in that, A first transition plate is provided between the cover plates at both ends of the shaft core, and a second transition plate is provided between the opening and closing units. The back of the first transition plate is fixedly connected to the base plate, and the front of the first transition plate is an arc surface. The back of the second transition plate is fixedly connected to the base plate, and the front of the second transition plate is an arc surface. The back of the cover plate is fixedly connected to the base plate, and the front of the cover plate is an arc surface. The first transition plate, the second transition plate, and the cover plate have the same curvature.

6. The outward folding opening and closing mechanism according to claim 4, characterized in that, The limiting part includes an unfolding limiting part and a closing limiting part; One end of the unfolding limiting part is slidably connected to the base plate, and the other end is slidably connected to the mounting part, which is used to limit the maximum unfolding range of the opening and closing part; One end of the closing limiting part is slidably connected to the cover plate, and the other end is slidably connected to the mounting part, which is used to limit the minimum closing range of the opening and closing part.

7. The outward folding opening and closing mechanism according to claim 6, characterized in that, The unfolding limiting part includes a first curved block and a straight plate. The first curved block is connected to the straight plate. The base plate is provided with a first curved groove that matches the first curved block. The connecting block of the mounting part is provided with a second straight sliding groove that accommodates the sliding of the straight plate. When the opening and closing part drives the mounting parts on both sides to unfold to a horizontal position, the end of the first curved block abuts against the end of the first curved groove. The closing limiting part includes a second curved surface block and a third curved surface block. The second curved surface block and the third curved surface block are connected by a connecting plate. The second curved surface block and the third curved surface block have opposite bending directions. The cover plate is provided with a second curved surface groove that matches the second curved surface block. The connecting block of the mounting part is provided with a third curved surface groove that matches the third curved surface block. When the opening and closing part drives the mounting parts on both sides to close and overlap, the end of the second curved surface block abuts against the end of the second curved surface groove, and the end of the third curved surface block abuts against the end of the third curved surface groove.

8. The outward folding opening and closing mechanism according to claim 7, characterized in that, The mounting part includes a connecting block and a support plate. The front side of the support plate is used to mount the screen. The front edge of the support plate is provided with a mounting groove. The connecting block is disposed in the mounting groove and is fixedly connected to the support plate. Each opening and closing unit is slidably connected to one of the connecting blocks on both sides. The opening and closing unit drives the support plate to flip and fold towards its back side.

9. The outward folding opening and closing mechanism according to claim 8, characterized in that, The linkage component includes a synchronization plate and a sliding plate, and the synchronization plate is connected to the connecting block in the adjacent opening and closing unit; The connecting block has a first sliding groove at one end, and the sliding plate has a second sliding groove at one end that matches the first sliding groove. The sliding plate is located on the back of the connecting block and is located in the mounting groove. The first sliding groove and the second sliding groove are engaged. The length of the sliding plate is the same as the length of the base. The sliding plate is fixedly connected to the straight plate.

10. A foldable electronic product, characterized in that, Includes the outward folding mechanism as described in any one of claims 1-9, wherein the electronic product is folded or unfolded by the outward folding mechanism.

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