Outward folding opening and closing mechanism and folding electronic product

Abstract

The invention relates to the technical field of hinge opening and closing, and discloses an outward folding opening and closing mechanism and a folding electronic product, the opening and closing mechanism comprises an opening and closing part and mounting parts, the two sides of the opening and closing part are connected with the mounting parts respectively, and when the mounting parts on the two sides are closed, a display screen is located on the outer sides of the mounting parts; the opening and closing part comprises a plurality of opening and closing units, and the opening and closing units are connected through linkage assemblies; the opening and closing unit comprises two symmetrically-arranged shaft cores, a base, a synchronous block, a rotating part and a limiting part, the contact surface of the synchronous block and the rotating part is a spiral curved surface, the limiting part is connected with the base, one side of the limiting part is slidably connected with the linkage assembly, the other side of the limiting part is slidably connected with the mounting part, and the limiting part is used for limiting the rotating interval of the rotating part. According to the scheme, the screen can be folded outwards, the folded screen is located on the outer side of the folding face, then the screen is folded outwards, the outwards-folded screen can continue to be used, and the advantage that the service life of the folding screen is prolonged is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the hinge opening and closing technical field, and in particular to an outer folding opening and closing mechanism and a folding electronic product. BACKGROUND

[0002] The folding display device is fixed in a bending structure, and when the user does not need to watch the flexible display screen, the user can bend the OLED display device into a non-equal thickness form by using the bending structure. 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 future flexible folding screens. The folding display device has been widely used in various electronic products, such as mobile phones, tablets, notebooks, etc. Compared with small-sized mobile phones, larger-sized tablets and notebooks require higher-strength hinge structures to realize folding. The conventional folding hinge is to fold the flexible screen inward, that is, the folded screen is located inside the folding surface. The folding of the screen outside the folding surface is the development direction of the current folding electronic product. This outer folding screen structure can use the screen in the folded state, and the outer folding structure can reduce the folding deformation effect on the screen.

[0003] Chinese patent application CN202220123027.X discloses an outer folding hinge folding module, which comprises a fixed base, a left turning plate, a right turning plate and a movable base. The front and rear ends of the left turning plate are provided with left active cam connections, and the front and rear ends of the right turning plate are provided with right active cam connections. The left active cam and the right active cam are matched with the driven cam on the movable base. The movable base and the fixed base are provided with elastic members. The beneficial effects of the present application are as follows: the cam sets are arranged at both ends of the turning plate, which makes the whole structure symmetrical up and down and left and right, to solve the problem of poor balance; the front and rear symmetrical cam sets can double the original cam translation amount, thereby obtaining greater torque. This scheme needs to be improved.

[0004] The present application overcomes the shortcomings of the prior art and provides an outer folding opening and closing mechanism and a folding electronic product. The outer folding structure is more simplified, and the folding flexibility is greater. SUMMARY

[0005] The main purpose of the present application is to provide an outer folding opening and closing mechanism, which comprises an opening and closing part and a mounting part. The mounting part is used to connect the display screen. The opening and closing part is connected to the mounting part on both sides. The opening and closing part drives the two mounting parts to open and close. When the two mounting parts are closed, the display screen is located outside the mounting part. The opening and closing part comprises a plurality of opening and closing units, and the opening and closing units are connected through a linkage assembly. 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] The present invention also provides a foldable electronic product, including the above-described 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 invention 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 screen is folded 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 the present invention.

[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 the present invention.

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

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

[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 the present invention.

[0022] Figure 6 This is an exploded view of the front of the opening and closing unit in an embodiment of the outward folding opening and closing mechanism of the present invention.

[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 the present invention.

[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 the present invention.

[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 the present invention.

[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 the present invention.

[0027] Figure 11 This is an exploded view of the back of the opening and closing unit and connecting block assembly in an embodiment of the outward folding opening and closing mechanism of the present invention.

[0028] Figure 12 This is a folding schematic diagram of an embodiment of the outward folding opening and closing mechanism of the present invention.

[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 the present invention, 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 the present invention, 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, a feature 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 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 Figures 1-12 The diagram shown is a schematic representation of an embodiment of the outward folding opening and closing mechanism provided by the present invention.

[0034] Please refer to Figures 1-12 This embodiment is used to realize the screen folding of electronic products, including 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] The present invention 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 may be a smartphone, tablet computer, or laptop computer.

[0051] In summary, the outward folding mechanism embodiment provided by the present invention 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 the present invention, and are not intended to limit it. Under the concept of the present invention, 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 the present invention as described above. For the sake of brevity, they are not provided in detail. Although the present invention 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 the present invention.

Claims

1. An outer folding and unfolding mechanism, characterized by, The opening and closing part and the mounting part are connected, the mounting part is used for connecting the display screen, the opening and closing part is connected with the mounting part on both sides, the opening and closing part drives the mounting part on both sides to open and close, and the display screen is located outside the mounting part when the mounting part on both sides is closed. The opening and closing part comprises a plurality of opening and closing units which are connected through linkage assemblies. The opening and closing unit comprises two symmetrically arranged shaft cores, a base, a synchronous block, a rotating part and a limiting part, the two ends of the shaft core are connected with the base respectively, the base is connected with the linkage assembly, one side of the rotating part is hinged with the shaft core, the other side is slidingly connected with the mounting part, the two shaft cores pass through the synchronous block, the synchronous block connects the two shaft cores, the contact surface between the synchronous block and the rotating part is a spiral curved surface, the limiting part is connected with the base, one side of the limiting part is slidingly connected with the linkage assembly, the other side is slidingly connected with the mounting part, and the limiting part is used for limiting the rotation range of the rotating part. When one side of the rotating part rotates around the connected shaft core, the synchronous block is driven to move along the axial direction of the shaft core, and the synchronous block drives the rotating part connected with the other side of the shaft core to rotate synchronously.

2. The outer folding mechanism according to claim 1, wherein The rotating part comprises a first torsion arm and a second torsion arm, the inner side of the first torsion arm is hinged with the shaft core through a first sleeve, the inner side of the second torsion arm is hinged with the shaft core through a second sleeve, the synchronous block is arranged between the first sleeve and the second sleeve, and the contact surfaces between the synchronous block and the first sleeve and the second sleeve are spiral curved surfaces. The outer side of the first torsion arm is bent by a predetermined angle and is slidingly connected with the mounting part, the outer side of the second torsion arm is bent by a predetermined angle and is slidingly connected with the mounting part, and the adjacent side surfaces of the first torsion arm and the second torsion arm are connected through a bolt. The connecting block of the mounting part is provided with a first linear sliding groove for accommodating the first torsion arm and the second torsion arm.

3. The outer folding and unfolding mechanism according to claim 2, characterized in that The middle part of the second sleeve of the second torsion arm has a space for accommodating a protruding block and a spring, the two ends of the spring are respectively provided with one protruding block, the protruding block comprises a third sleeve and a connecting rod, the two ends of the connecting rod are respectively connected with the third sleeve, the third sleeve is connected with the shaft core, and the protruding block 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 end of the second sleeve away from the synchronous block is also provided with the protruding block and the spring, one end of the spring is in contact with the third sleeve, and the other end is in abutment with the base; The contact surface between the third sleeve and the second sleeve is a climbing inclined surface.

4. The outer folding and unfolding mechanism according to claim 1, wherein The base comprises a bottom plate and a cover plate, a plurality of opening and closing units share the same bottom plate, the length of the bottom plate matches the length of the opening and closing part, the two ends of the shaft core are respectively connected with a cover plate, the cover plate is fixedly connected with the bottom plate, and the limiting part is located between the bottom plate and the cover plate.

5. The outer folding and opening mechanism according to claim 4, wherein The first transition plate is fixedly connected with the back surface of the bottom plate, the front surface of the first transition plate is an arc surface, the back surface of the second transition plate is fixedly connected with the bottom plate, the front surface of the second transition plate is an arc surface, the back surface of the cover plate is fixedly connected with the bottom plate, and the front surface of the cover plate is an arc surface.

6. The outer folding and unfolding mechanism according to claim 4, wherein The limiting part comprises an unfolding limiting part and a closing limiting part. One end of the unfolding limiting part is slidably connected with the bottom plate, the other end is slidably connected with the mounting part, and the unfolding limiting part is used for limiting the maximum unfolding range of the opening and closing part. One end of the closing limiting part is slidably connected with the cover plate, the other end is slidably connected with the mounting part, and the closing limiting part is used for limiting the minimum closing range of the opening and closing part.

7. The outer folding and unfolding mechanism according to claim 6, characterized in that, The unfolding limiting part comprises a first curved block and a straight plate, the first curved block is connected with the straight plate, the bottom plate is provided with a first curved groove matched with the first curved block, the connecting block of the mounting part is provided with a second straight sliding groove for accommodating the sliding of the straight plate, and when the opening and closing part drives the two mounting parts to unfold horizontally, the end of the first curved block abuts against the end of the first curved groove. The closing limiting part comprises a second curved block and a third curved block, the second curved block and the third curved block are connected through a connecting plate, the bending directions of the second curved block and the third curved block are opposite, the cover plate is provided with a second curved groove matched with the second curved block, the connecting block of the mounting part is provided with a third curved groove matched with the third curved block, and when the opening and closing part drives the two mounting parts to close and overlap, the end of the second curved block abuts against the end of the second curved groove, and the end of the third curved block abuts against the end of the third curved groove.

8. The outer folding and unfolding mechanism according to claim 7, characterized in that The mounting part comprises a connecting block and a bearing plate, the front surface of the bearing plate is used for mounting a screen, the front surface edge of the bearing plate is provided with a mounting groove, the connecting block is arranged in the mounting groove, the connecting block is fixedly connected with the bearing plate, the two sides of each opening and closing unit are slidably connected with one connecting block respectively, and the opening and closing unit drives the bearing plate to flip and fold towards the back surface thereof.

9. The outer folding and unfolding mechanism according to claim 8, characterized in that The linkage assembly comprises a synchronous plate and a sliding plate, and the synchronous plate is connected with the connecting blocks in adjacent opening and closing units. The end of the connecting block is provided with a first sliding groove, the end of the sliding plate is provided with a second sliding groove matched with the first sliding groove, the sliding plate is arranged on the back surface of the connecting block and located in the mounting groove, the first sliding groove is buckled with the second sliding groove, the length of the sliding plate is the same as the length of the base, and the sliding plate is fixedly connected with the straight plate.

10. A foldable electronic product, characterized by, The electronic product is folded or unfolded through the outer folding and unfolding mechanism.

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