A folding device and a flexible screen mobile terminal

Abstract

The present invention proposes a folding device and a flexible screen mobile terminal, the folding device includes a first shell, a second shell, an intermediate shell, a supporting mechanism, a rotating and moving mechanism and a limiting mechanism, the first shell and the second shell are used to jointly carry the flexible screen, the first shell and the second shell are respectively arranged on both sides of the intermediate shell; a receiving cavity for accommodating the folding part of the flexible screen is arranged in the intermediate shell, the rotating and moving mechanism is installed in the receiving cavity, the first shell and the second shell are rotatably connected with the intermediate shell through the rotating and moving mechanism; the limiting mechanism is installed on the intermediate shell; the supporting mechanism includes a first supporting plate and a second supporting plate, the first supporting plate and the second supporting plate can be rotatably installed on the intermediate shell, the first supporting plate and the first shell are mutually transmitted via the rotating and moving mechanism, and the second supporting plate and the second shell are mutually transmitted via the rotating and moving mechanism. The folding device of the present invention solves the problem that the existing folding device cannot provide stable support for the display screen.

Description

Technical Field

[0001] The present invention relates to the technical field of display terminals, and in particular to a folding device and a flexible screen mobile terminal. Background Art

[0002] With the development of electronic equipment technology, users have an increasing demand for electronic equipment with large size and easy to carry. Therefore, electronic equipment with foldable flexible screens has received widespread attention. When the foldable flexible screen is assembled with the shell of the electronic device, in order to ensure that it can switch between the folded and unfolded states, the folding deformation area of ​​the flexible screen is usually not fixedly connected to the shell. When the foldable flexible screen is folded, the folding deformation area will have two possible movement states: folding outward with a protrusion and folding inward with a concave setting.

[0003] The application number "201810384028.8" in the public specification of the Chinese invention patent application and the name "Flexible display device and folding device thereof" discloses a flexible screen folding device. The mechanism is connected by a gear rack transmission and a multi-link connection. The innermost link is provided with a rack, which cooperates with the gear set responsible for rotation. The outermost link is connected to the flexible screen support plate. When the mechanism is in the unfolded state, the multi-link is in parallel connection and jointly supports the flexible screen. When the mechanism is in the folded state, the gear linkage drives the rack to rotate and drives the linkage to form a bending state, making room for the bending part of the flexible screen. This form of flexible screen folding device, whether in the unfolded state or the folded state, has a gap in the middle joint and exposed gears, which affects the appearance. The folding device occupies a large space, and the connecting rod under the display screen cannot provide stable support when unfolded, which affects the display effect of the display screen. Summary of the invention

[0004] In view of the problem that the existing folding device cannot provide stable support for the display screen, the present invention provides a folding device and a flexible screen mobile terminal.

[0005] The present invention provides a folding device, which is suitable for folding a flexible screen, comprising a first shell, a second shell, an intermediate shell, a supporting mechanism, a rotating and moving mechanism and a limiting mechanism, wherein the first shell and the second shell are used to jointly carry the flexible screen, and the first shell and the second shell are respectively arranged on both sides of the intermediate shell; a containing cavity for accommodating a folded part of the flexible screen is arranged in the intermediate shell, the rotating and moving mechanism is installed in the containing cavity, and the first shell and the second shell are rotatably connected to the intermediate shell through the rotating and moving mechanism; the limiting mechanism is installed on the intermediate shell; the supporting mechanism comprises a first supporting plate and a second supporting plate, the first supporting plate and the first shell are mutually transmitted via the rotating and moving mechanism, and the second supporting plate and the second shell are mutually transmitted via the rotating and moving mechanism;

[0006] When the first shell and the second shell are in the unfolded state, the limiting mechanism interferes with the rotating and movable mechanism to limit the displacement of the rotating and movable mechanism, and the first support plate and the second support plate interfere with the flexible screen to support the flexible screen; when the first shell and the second shell are folded, the limiting mechanism releases the position restriction on the rotating and movable mechanism, and the rotating and movable mechanism drives the first support plate and the second support plate to deflect toward the direction of the accommodating cavity to form an avoidance space between the first support plate and the second support plate.

[0007] Optionally, the rotating and moving mechanism includes a first transmission assembly, a second transmission assembly and a rack, the rack is installed at one end of the intermediate shell, and a first slide groove and a second slide groove are provided on the end surface of the intermediate shell, and the first slide groove and the second slide groove are respectively provided on both sides of the rack; the first transmission assembly and the second transmission assembly are both engaged with the rack, the first support plate and the first shell are mutually transmitted via the first transmission assembly, and the second support plate and the second shell are mutually transmitted via the second transmission assembly.

[0008] Optionally, the first transmission assembly includes a first moving gear, a first moving gear shaft and a first connecting portion; the second transmission assembly includes a second moving gear, a second moving gear shaft and a second connecting portion; the first moving gear and the second moving gear are relatively arranged in the accommodating cavity, and both are meshed with the rack; the first moving gear shaft is installed on the first moving gear, and the first moving gear shaft passes through the first sliding groove and is connected to the first housing; the second moving gear shaft is installed on the second moving gear, and the second moving gear shaft passes through the second sliding groove and is connected to the second housing; the first connecting portion is installed on the first moving gear shaft and is connected to the first supporting plate; the second connecting portion is installed on the second moving gear shaft and is connected to the second supporting plate;

[0009] When the first shell and the second shell are folded, the first moving gear and the second moving gear move from the first position to the second position, and the first moving gear and the second moving gear rotate in opposite directions. The first moving gear moves along the extension direction of the first slide groove, and the second moving gear moves along the extension direction of the second slide groove; the first connecting portion drives the first support plate to deflect toward the accommodating cavity; the second connecting portion drives the second support plate to deflect toward the accommodating cavity to form an avoidance space between the first support plate and the second support plate.

[0010] Optionally, the limiting mechanism includes a mounting plate, a first limiting boss, a second limiting boss and a return spring, the mounting plate being mounted on the end face of the intermediate shell and being located between the rack and the intermediate shell, the mounting plate being arranged between the first slide groove and the second slide groove, and the mounting plate being provided with a groove for accommodating the first limiting boss and the second limiting boss; one end of the first limiting boss extends to the first slide groove and conflicts with the first moving gear shaft; one end of the second limiting boss extends to the second slide groove and conflicts with the second moving gear shaft; the return spring connects the first limiting boss and the second limiting boss.

[0011] Optionally, the supporting mechanism further includes a first connecting rod, a second connecting rod, a first limiting slider and a second limiting slider, one end of the first connecting rod is rotatably connected to the first supporting plate, and the other end of the first connecting rod is rotatably connected to the end surface of the intermediate shell; the first limiting slider is movably mounted on the first connecting rod, and the first connecting rod is connected to the first connecting part through the first limiting slider; one end of the second connecting rod is rotatably connected to the second supporting plate, and the other end of the second connecting rod is rotatably connected to the end surface of the intermediate shell; the second limiting slider is movably mounted on the second connecting rod, and the second connecting rod is connected to the second connecting part through the second limiting slider.

[0012] Optionally, a first rotation point and a second rotation point are provided on both sides of the intermediate shell; a first rotation hole and a first linkage hole are provided on the first support plate, the first rotation hole is provided on one side of the first support plate and is located in the extension direction of the first support plate, and the first rotation hole is rotatably connected to the first rotation point; the first linkage hole is provided at one end of the first support plate and is rotatably connected to one end of the first connecting rod;

[0013] A second rotation hole and a second linkage hole are provided on the second support plate. The second rotation hole is provided on one side of the second support plate and is located in the extension direction of the second support plate. The second rotation hole is rotationally connected to the second rotation point; the second linkage hole is provided at one end of the second support plate and is rotationally connected to one end of the second connecting rod.

[0014] Optionally, the first connecting portion is provided with a first arcuate groove, the first arcuate groove is located on a circle with the rotating shaft of the first moving gear shaft as the center, the first limiting slider is provided with a first cylindrical slide inserted into the first arcuate groove and sliding along the first arcuate groove; the first connecting rod is provided with a third slide groove, and the first limiting slider is provided with a first linear slide inserted into the third slide groove and sliding along the third slide groove;

[0015] The second connecting portion is provided with a second arc groove, and the second arc groove is located on a circle with the rotating axis of the second moving gear shaft as the center; the second limiting slider is provided with a second cylindrical slide inserted into the second arc groove and sliding along the second arc groove; the second connecting rod is provided with a fourth slide groove, and the second limiting slider is provided with a second linear slide inserted into the fourth slide groove and sliding along the fourth slide groove.

[0016] Optionally, the folding device also includes a synchronous movement mechanism, which includes a first synchronous member, a second synchronous member, a first connecting member and a second connecting member; a first synchronous gear is provided at one end of the first synchronous member, and a first connecting hole is provided at the other end of the first synchronous member; the first synchronous gear is rotatably mounted on the rack, and a first connecting column is provided on the first connecting member and is embedded in the first movement gear and is rotatably connected to the first connecting hole; a second synchronous gear is provided at one end of the second synchronous member, and a second connecting hole is provided at the other end of the second synchronous member; the second synchronous gear is rotatably mounted on the rack, and the first synchronous gear and the second synchronous gear are meshed; a second connecting column is provided on the second connecting member and is embedded in the second movement gear and is rotatably connected to the second connecting hole.

[0017] Optionally, the folding device further comprises an opening and closing mechanism, the opening and closing mechanism comprising a first pressure rod, a second pressure rod, a first compression spring and a second compression spring, the first pressure rod and the first compression spring are installed in the first shell, a first mounting hole for accommodating the first compression spring is provided in the first shell, and a second mounting hole for accommodating the second compression spring is provided in the second shell;

[0018] A first guide surface and a second guide surface are provided on both sides of the intermediate shell; one end of the first pressure rod is displaceably installed in the first mounting hole and is connected to the first compression spring, and the other end of the first pressure rod is in contact with the first guide surface; one end of the second pressure rod is displaceably installed in the second mounting hole and is connected to the second compression spring, and the other end of the second pressure rod is in contact with the second guide surface; when the first shell and the second shell are folded, the first pressure rod moves along the first guide surface, and the second pressure rod moves along the second guide surface.

[0019] Optionally, a first arcuate surface matching the first guide surface is disposed at one end of the first pressure rod near the first guide surface, and a second arcuate surface matching the second guide surface is disposed at one end of the second pressure rod near the second guide surface.

[0020] On the other hand, the present invention also provides a flexible screen mobile terminal, including a flexible screen and the folding device, wherein the flexible screen is arranged on the first shell, the second shell, the first support plate and the second support plate.

[0021] In the present invention, by setting a limiting mechanism, it is ensured that the first shell and the second shell can maintain the proper posture when they are unfolded or folded, and will not show a state of loose folding or incomplete unfolding due to self-gravity. By setting a supporting mechanism, when the first shell and the second shell are unfolded, the first support plate and the second support plate provide stable support for the folded part of the flexible screen to improve the display effect, and when folded, the first support plate and the second support plate provide avoidance space for the flexible screen. When the first shell and the second shell are folded, the first support plate and the second support plate are driven by the rotating moving mechanism to rotate to provide avoidance space for the flexible screen, which not only solves the storage space of the flexible screen after bending, but also reduces the space occupied by the intermediate shell and the first shell and the second shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a flexible screen terminal when it is unfolded, provided by an embodiment of the present invention;

[0023] Figure 2 is a structural schematic diagram of a flexible screen terminal provided by an embodiment of the present invention when it is in a transition state between unfolding and closing;

[0024] Figure 3 This is a schematic diagram of the structure of a flexible screen terminal after folding provided by an embodiment of the present invention;

[0025] Figure 4 is an exploded schematic diagram of a folding device provided by one embodiment of the present invention;

[0026] Figure 5 yes Figure 4 A partial enlarged view of the middle A;

[0027] Figure 6 yes Figure 4 A partial enlarged view of point B in the middle;

[0028] Figure 7 It is a schematic diagram of a rotation movement mechanism and a synchronous movement mechanism of a folding device provided by one embodiment of the present invention;

[0029] Figure 8 is a schematic diagram of a support mechanism of a folding device provided by an embodiment of the present invention;

[0030] Fig. 9 is a schematic diagram of a support mechanism of a folding device provided by an embodiment of the present invention from another angle;

[0031] Fig.10 is a schematic diagram of an intermediate housing of a folding device provided by an embodiment of the present invention;

[0032] Fig.11 is a schematic diagram of a first supporting plate of a folding device provided by an embodiment of the present invention;

[0033] Fig.12 is a schematic diagram of a rotational movement mechanism of a folding device when unfolding provided by an embodiment of the present invention;

[0034] Fig.13 It is a schematic diagram of a rotating movement mechanism of a folding device in a transition state between unfolding and closing provided by an embodiment of the present invention;

[0035] Fig.14 is a schematic diagram of a rotational movement mechanism of a folding device when it is closed, provided by one embodiment of the present invention;

[0036] Fig.15 is a schematic diagram of a limiting mechanism of a folding device after folding provided by an embodiment of the present invention;

[0037] Fig.16 is a schematic diagram of a supporting mechanism of a folding device provided by an embodiment of the present invention after folding;

[0038] Fig.17 is a schematic diagram of a synchronous motion mechanism of a folding device after folding provided by an embodiment of the present invention;

[0039] Fig.18 is a schematic diagram of an opening and closing mechanism of a folding device provided by an embodiment of the present invention after folding;

[0040] Fig.19 It is a structural schematic diagram of a first shell of a folding device provided by an embodiment of the present invention.

[0041] Description of reference numerals: 10, first housing; 11, first mounting hole; 20, second housing; 21, second mounting hole; 30, intermediate housing; 31, accommodating cavity; 32, first slide groove; 33, second slide groove; 34, first rotation point; 35, second rotation point; 36, cover plate; 37, pressure plate; 38, first guide surface; 39, second guide surface;

[0042] 40. Support mechanism; 41. First support plate; 411. First rotation hole; 412. First linkage hole; 42. Second support plate; 43. First connecting rod; 431. First rotation axis; 432. First linkage boss; 433. Third slide; 44. Second connecting rod; 441. Second rotation axis; 442. Second linkage boss; 45. First limit slider; 451. First cylindrical slide; 452. First linear slide; 46. Second limit slider;

[0043] 50. Rotational movement mechanism; 51. First movement gear; 52. Second movement gear; 53. Rack; 54. First movement gear shaft; 55. Second movement gear shaft; 56. First connecting portion; 561. First arc groove; 57. Second connecting portion; 571. Second arc groove;

[0044] 60. Limiting mechanism; 61. Mounting plate; 611. Groove; 62. First limiting boss; 63. Second limiting boss; 64. Return spring;

[0045] 70. Synchronous motion mechanism; 71. First synchronous member; 711. First synchronous gear; 712. First connecting hole; 72. Second synchronous member; 721. Second synchronous gear; 722. Second connecting hole; 73. First connecting member; 731. First connecting column; 74. Second connecting member; 741. Second connecting column;

[0046] 80. opening and closing mechanism; 81. first pressure rod; 82. second pressure rod; 83. first pressure spring; 84. second pressure spring;

[0047] 90. Flexible screen; DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0049] In order to illustrate the technical solution of the present invention, specific embodiments are provided below for illustration.

[0050] like Figure 1-Figure 6 As shown, reference Figure 7-Figure 16A folding device according to an embodiment of the present invention is suitable for folding a flexible screen, comprising a first shell 10, a second shell 20, an intermediate shell 30, a support mechanism 40, a rotation and movement mechanism 50 and a limit mechanism 60. The first shell 10 and the second shell 20 are used to carry a flexible screen 90 together, and the first shell 10 and the second shell 20 are respectively arranged on both sides of the intermediate shell 30. The intermediate shell 30 is provided with a receiving cavity 31 for accommodating the folded part of the flexible screen 90, the rotation and movement mechanism 50 is installed in the receiving cavity 31, and the first shell 10 and the second shell 20 are rotatably connected to the intermediate shell 30 through the rotation and movement mechanism 50. The limit mechanism 60 is installed on the intermediate shell 30. The support mechanism 40 comprises a first support plate 41 and a second support plate 42, the first support plate 41 and the second support plate 42 are both rotatably installed on the intermediate shell 30, the first support plate 41 and the first shell 10 are mutually transmitted via the rotation and movement mechanism 50, and the second support plate 42 and the second shell 20 are mutually transmitted via the rotation and movement mechanism 50.

[0051] When the first shell 10 and the second shell 20 are in the unfolded state, the limiting mechanism 60 conflicts with the rotation and movement mechanism 50 to limit the displacement of the rotation and movement mechanism 50, and the first support plate 41 and the second support plate 42 conflict with the flexible screen 90 to carry the flexible screen 90. When the first shell 10 and the second shell 20 are folded, the limiting mechanism 60 releases the position restriction on the rotation and movement mechanism 50, and the rotation and movement mechanism 50 drives the first support plate 41 and the second support plate 42 to deflect toward the accommodating cavity 31 to form an avoidance space between the first support plate 41 and the second support plate 42.

[0052] In this embodiment, by setting the limiting mechanism 60, it is ensured that the first shell 10 and the second shell 20 can maintain the proper posture when they are unfolded or folded, and will not show the condition of loose folding or incomplete unfolding due to self-gravity. By setting the supporting mechanism 40, the first supporting plate 41 and the second supporting plate 42 of the flexible screen 90 provide stable support for the folded part of the flexible screen 90 when the first shell 10 and the second shell 20 are unfolded, thereby improving the display effect, and the first supporting plate 41 and the second supporting plate 42 provide avoidance space for the flexible screen 90 when folded. When the first shell 10 and the second shell 20 are folded, the first supporting plate 41 and the second supporting plate 42 are driven by the rotating moving mechanism 50 to rotate to provide avoidance space for the flexible screen 90, which can not only solve the storage space of the flexible screen 90 after bending, but also reduce the space occupied by the intermediate shell 30 and the first shell 10 and the second shell 20.

[0053] like Figure 4-Figure 7 As shown, reference Figure 8-Figure 16 In some embodiments of the present invention, the rotation and movement mechanism includes a first transmission assembly, a second transmission assembly and a rack 53, the rack 53 is installed at one end of the intermediate housing 30, the end surface of the intermediate housing 30 is provided with a first slide groove 32 and a second slide groove 33, the first slide groove 32 and the second slide groove 33 are respectively arranged on both sides of the rack 53. The first transmission assembly and the second transmission assembly are both engaged with the rack 53, the first support plate 41 and the first housing 10 are mutually transmitted via the first transmission assembly, and the second support plate 42 and the second housing 20 are mutually transmitted via the second transmission assembly.

[0054] like Figure 4-Figure 7 As shown, reference Figure 8-Figure 16 In some embodiments of the present invention, the first transmission assembly includes a first motion gear 51, a first motion gear shaft 54, and a first connecting portion 56. The second transmission assembly includes a second motion gear 52, a second motion gear shaft 55, and a second connecting portion 57. The first motion gear 51 and the second motion gear 52 are arranged oppositely in the accommodating cavity 31, and both are meshed with the rack 53. The first motion gear shaft 54 ​​is mounted on the first motion gear 51, and the first motion gear shaft 54 ​​passes through the first slide groove 32 to connect with the first housing 10. The second motion gear shaft 55 is mounted on the second motion gear 52, and the second motion gear shaft 55 passes through the second slide groove 33 to connect with the second housing 20. The first connecting portion 56 is mounted on the first motion gear shaft 54 ​​and connected to the first support plate 41. The second connecting portion 57 is mounted on the second motion gear shaft 55 and connected to the second support plate 42.

[0055] When the first housing 10 and the second housing 20 are folded, the first moving gear 51 and the second moving gear 52 move from the first position to the second position, the first moving gear 51 and the second moving gear 52 rotate in opposite directions, the first moving gear 51 moves along the extension direction of the first slide slot 32, and the second moving gear 52 moves along the extension direction of the second slide slot 33. The first connecting portion 56 drives the first support plate 41 to deflect toward the accommodating cavity 31. The second connecting portion 57 drives the second support plate 42 to deflect toward the accommodating cavity 31, so as to form an escape space between the first support plate 41 and the second support plate 42.

[0056] In this embodiment, when the first shell 10 and the second shell 20 are in the unfolded state, the first shell 10, the second shell 20 and the intermediate shell 30 are in a horizontal state. At this time, the first movement gear 51 and the second movement gear 52 are respectively located at the lower ends of the first slide groove 32 and the second slide groove 33. When the first shell 10 and the second shell 20 are rotated toward the intermediate shell 30 for folding, the first movement gear 51 connected to the first shell 10 is meshed with the rack 53 and moves upward along the first slide groove 32, and the second movement gear 52 connected to the second shell 20 is meshed with the rack 53 and moves upward along the second slide groove 33. When the first shell 10 and the second shell 20 are in the transition state between unfolding and closing, the first movement gear 51 and the second movement gear 52 are respectively moved to the middle of the first slide groove 32 and the second slide groove 33. When the first shell 10 and the second shell 20 are in the closed state, the first movement gear 51 and the second movement gear 52 are respectively moved to the upper ends of the first slide groove 32 and the second slide groove 33.

[0057] like Figure 4 , Figure 5 and Fig.15 As shown, in some embodiments of the present invention, the limiting mechanism 60 includes a mounting plate 61, a first limiting boss 62, a second limiting boss 63 and a return spring 64. The mounting plate 61 is mounted on the end surface of the intermediate housing 30 and is located between the rack 53 and the intermediate housing 30. The mounting plate 61 is arranged between the first slide groove 32 and the second slide groove 33. The mounting plate 61 is provided with a groove 611 for accommodating the first limiting boss 62 and the second limiting boss 63. One end of the first limiting boss 62 extends to the first slide groove 32 and conflicts with the first motion gear shaft 54. One end of the second limiting boss 63 extends to the second slide groove 33 and conflicts with the second motion gear shaft 55. The return spring 64 connects the first limiting boss 62 and the second limiting boss 63.

[0058] In this embodiment, when the first moving gear 51 and the second moving gear 52 move upward or downward along the first sliding groove 32 and the second sliding groove 33 respectively, the first moving gear shaft 54 ​​and the second moving gear shaft 55 need to squeeze the first limiting boss 62 and the second limiting boss 63 into the groove 611. When the first moving gear 51 and the second moving gear 52 move, the first limiting boss 62 and the second limiting boss 63 extend to the first sliding groove 32 and the second sliding groove 33 respectively under the action of the return spring 64, ensuring that the first shell 10 and the second shell 20 can maintain the proper posture when in the unfolded or folded states, and will not show the condition of incomplete folding or unfolding due to self-gravity.

[0059] like Figure 4-Figure 5 As shown, reference Figure 8-Figure 16In some embodiments of the present invention, the support mechanism 40 further includes a first connecting rod 43, a second connecting rod 44, a first limiting slider 45, and a second limiting slider 46. One end of the first connecting rod 43 is rotatably connected to the first supporting plate 41, and the other end of the first connecting rod 43 is rotatably connected to the end surface of the intermediate housing 30. The first limiting slider 45 is movably mounted on the first connecting rod 43, and the first connecting rod 43 is connected to the first connecting portion 56 through the first limiting slider 45. One end of the second connecting rod 44 is rotatably connected to the second supporting plate 42, and the other end of the second connecting rod 44 is rotatably connected to the end surface of the intermediate housing 30. The second limiting slider 46 is movably mounted on the second connecting rod 44, and the second connecting rod 44 is connected to the second connecting portion 57 through the second limiting slider 46. By providing the first connecting rod 43 and the second connecting rod 44, it is convenient for the first moving gear 51 and the second moving gear 52 to drive the first supporting plate 41 and the second supporting plate 42 to rotate.

[0060] like Figure 10-11 As shown, in some embodiments of the present invention, the first rotation point 34 and the second rotation point 35 are provided on both sides of the intermediate housing 30. The first support plate 41 is provided with a first rotation hole 411 and a first linkage hole 412, the first rotation hole 411 is provided on one side of the first support plate 41 and is located in the extension direction of the first support plate 41, and the first rotation hole 411 is rotatably connected to the first rotation point 34. The first linkage hole 412 is provided at one end of the first support plate 41 and is rotatably connected to one end of the first connecting rod 43.

[0061] The second support plate 42 is provided with a second rotation hole and a second linkage hole, the second rotation hole is provided at one side of the second support plate 42 and is located in the extension direction of the second support plate 42, and the second rotation hole is rotatably connected to the second rotation point 35. The second linkage hole is provided at one end of the second support plate 42 and is rotatably connected to one end of the second connecting rod 44.

[0062] Specifically, Figure 8-Figure 9 As shown, in some embodiments of the present invention, the first connecting rod 43 is provided with a first rotating shaft 431 and a first linkage boss 432, the first connecting rod 43 is rotatably connected to the end surface of the intermediate housing 30 through the first rotating shaft 431, and the first connecting rod 43 is rotatably connected to the first linkage hole 412 through the first linkage boss 432. The second connecting rod 44 is provided with a second rotating shaft 441 and a second linkage boss 442, the second connecting rod 44 is rotatably connected to the end surface of the intermediate housing 30 through the second rotating shaft 441, and the second connecting rod 44 is rotatably connected to the second linkage hole through the second linkage boss 442.

[0063] like Figure 7-Figure 9 As shown, in some embodiments of the present invention, the first connecting portion 56 is provided with a first arc groove 561, the first arc groove 561 is located on a circle with the rotation axis of the first moving gear shaft 54 ​​as the center, and the first limiting slider 45 is provided with a first cylindrical slide 451 inserted into the first arc groove 561 and sliding along the first arc groove 561. The first connecting rod 43 is provided with a third slide groove 433, and the first limiting slider 45 is provided with a first linear slide 452 inserted into the third slide groove 433 and sliding along the third slide groove 433.

[0064] The second connecting portion 57 is provided with a second arc groove 571, and the second arc groove 571 is located on a circle with the rotation axis of the second moving gear shaft 55 as the center. The second limiting slider 46 is provided with a second cylindrical slide inserted into the second arc groove 571 and slides along the second arc groove 571. The second connecting rod 44 is provided with a fourth slide groove, and the second limiting slider 46 is provided with a second linear slide inserted into the fourth slide groove and slides along the fourth slide groove. The first arc groove 561 and the second arc groove 571 are provided to drive the first connecting rod 43 and the second connecting rod 44 to move respectively, and the structure is simple.

[0065] In this embodiment, when the first housing 10 and the second housing 20 are folded, the first moving gear 51 and the second moving gear 52 rotate, and the first arc groove 561 and the second arc groove 571 on the first connecting portion 56 and the second connecting portion 57 respectively move with the first moving gear 51 and the second moving gear 52, and the first cylindrical slide 451 in the first arc groove 561 drives the first connecting rod 43 to move, and the second connecting rod 44 is driven to move through the second cylindrical slide in the second arc groove 571. The first connecting rod 43 and the second connecting rod 44 rotate relative to the intermediate housing 30 through the first rotating shaft 431 and the second rotating shaft 441, respectively, and the first linkage boss 432 drives the first support plate 41 to rotate around the first rotating point 34 through the first linkage hole 412. The second linkage boss 442 drives the second support plate 42 to rotate around the second rotating point 35 through the second linkage hole.

[0066] like Figure 7 and Fig.17As shown, in some embodiments of the present invention, the folding device further includes a synchronous motion mechanism 70, and the synchronous motion mechanism 70 includes a first synchronous member 71, a second synchronous member 72, a first connecting member 73, and a second connecting member 74. A first synchronous gear 711 is provided at one end of the first synchronous member 71, and a first connecting hole 712 is provided at the other end of the first synchronous member 71. The first synchronous gear 711 is rotatably mounted on the rack 53, and a first connecting column 731 is provided on the first connecting member 73, which is embedded in the first motion gear 51 and rotatably connected to the first connecting hole 712. A second synchronous gear 721 is provided at one end of the second synchronous member 72, and a second connecting hole 722 is provided at the other end of the second synchronous member 72. The second synchronous gear 721 is rotatably mounted on the rack 53, and the first synchronous gear 711 and the second synchronous gear 721 are meshed. A second connecting column 741 is provided on the second connecting member 74, which is embedded in the second motion gear 52 and rotatably connected to the second connecting hole 722. Specifically, a first embedding hole 511 for embedding the first connecting column 731 is provided on the end surface of the first moving gear 51, and a second embedding hole 521 for embedding the second connecting column 741 is provided on the end surface of the second moving gear 52. The first synchronous member 71 and the second synchronous member 72 are provided so that the first housing 10 and the second housing 20 can maintain synchronous movement during the rotation movement.

[0067] like Figure 5 and Figure 6 As shown, in some embodiments of the present invention, the intermediate housing 30 includes a cover plate 36 and a pressure plate 37. The cover plates 36 are arranged at both ends of the intermediate housing 30 to cover the rotation and movement mechanism 50, the limit mechanism 60 and the synchronous movement mechanism 70. The pressure plate 37 is arranged on the side of the synchronous movement mechanism 70 away from the end surface of the intermediate housing 30. By arranging the cover plate 36 and the pressure plate 37, the structure is prevented from being exposed and the aesthetic effect is improved.

[0068] like Figure 4-Figure 6 , Fig.18 and Fig.19 As shown, in some embodiments of the present invention, the folding device further includes an opening and closing mechanism 80, and the opening and closing mechanism 80 includes a first pressure rod 81, a second pressure rod 82, a first compression spring 83, and a second compression spring 84. The first pressure rod 81 and the first compression spring 83 are installed in the first shell 10, and the first shell 10 is provided with a first installation hole 11 for accommodating the first compression spring 83. The second shell 20 is provided with a second installation hole 21 for accommodating the second compression spring 84.

[0069] The first guide surface 38 and the second guide surface 39 are provided on both sides of the intermediate shell 30. One end of the first pressure rod 81 is displaceably installed in the first mounting hole 11 and connected to the first compression spring 83, and the other end of the first pressure rod 81 contacts the first guide surface 38. One end of the second pressure rod 82 is displaceably installed in the second mounting hole 21 and connected to the second compression spring 84, and the other end of the second pressure rod 82 contacts the second guide surface 39. When the first shell 10 and the second shell 20 are folded, the first pressure rod 81 moves along the first guide surface 38, and the second pressure rod 82 moves along the second guide surface 39. By providing the opening and closing mechanism 80, the folding and unfolding of the first shell 10 and the second shell 20 are facilitated, and the hand feeling of the first shell 10 and the second shell 20 when folding and unfolding is ensured.

[0070] In this embodiment, when the first shell 10 and the second shell 20 are in the unfolded state, the first compression spring 83 and the second compression spring 84 are provided with pre-pressure, so that the first shell 10 and the second shell 20 are kept in the unfolded state without the action of external force. When the first shell 10 and the second shell 20 are folded, the first compression spring 83 and the second compression spring 84 are compressed, and the first compression rod 81 and the second compression rod 82 slide upward along the first guide surface 38 and the second guide surface 39 respectively. When the first compression rod 81 and the second compression rod 82 move to the middle position of the first guide surface 38 and the second guide surface 39 respectively, the elastic force of the first compression spring 83 and the second compression spring 84 is released, and the first compression rod 81 and the second compression rod 82 continue to slide upward along the first guide surface 38 and the second guide surface 39 respectively until the first compression rod 81 and the second compression rod 82 move to the top of the first guide surface 38 and the second guide surface 39, at which time, the first shell 10 and the second shell 20 are in the closed state.

[0071] like Figure 5 and Figure 6 As shown, in some embodiments of the present invention, the first pressure rod 81 is provided with a first arcuate surface matching the first guide surface 38 at one end near the first guide surface 38, and the second pressure rod 82 is provided with a second arcuate surface matching the second guide surface 39 at one end near the second guide surface 39.

[0072] On the other hand, Figure 1-Figure 3 As shown, a flexible screen 90 mobile terminal according to an embodiment of the present invention includes a flexible screen 90 and the folding device, and the flexible screen 90 is arranged on the first shell 10, the second shell 20, the first support plate 41 and the second support plate 42.

[0073] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A folding device, suitable for folding a flexible screen, characterized in that: It includes a first shell, a second shell, an intermediate shell, a supporting mechanism, a rotating and moving mechanism and a limiting mechanism, the first shell and the second shell are used to jointly carry a flexible screen, and the first shell and the second shell are respectively arranged on both sides of the intermediate shell; a containing cavity for accommodating a folded part of the flexible screen is arranged in the intermediate shell, the rotating and moving mechanism is installed in the containing cavity, and the first shell and the second shell are rotatably connected to the intermediate shell through the rotating and moving mechanism; the limiting mechanism is installed on the intermediate shell; the supporting mechanism includes a first supporting plate and a second supporting plate, the first supporting plate and the second supporting plate can be rotatably installed on the intermediate shell, the first supporting plate and the first shell are mutually transmitted via the rotating and moving mechanism, and the second supporting plate and the second shell are mutually transmitted via the rotating and moving mechanism; When the first shell and the second shell are in the unfolded state, the limiting mechanism conflicts with the rotation and movement mechanism to limit the displacement of the rotation and movement mechanism, and the first support plate and the second support plate conflict with the flexible screen to carry the flexible screen; when the first shell and the second shell are folded, the limiting mechanism releases the position restriction on the rotation and movement mechanism, and the rotation and movement mechanism drives the first support plate and the second support plate to deflect toward the accommodating cavity to form an avoidance space between the first support plate and the second support plate; The rotation and movement mechanism includes a first transmission assembly, a second transmission assembly and a rack, the rack is installed at one end of the intermediate housing, the end surface of the intermediate housing is provided with a first slide groove and a second slide groove, the first slide groove and the second slide groove are respectively provided on both sides of the rack; the first transmission assembly and the second transmission assembly are both engaged with the rack, the first support plate and the first housing are mutually transmitted via the first transmission assembly, and the second support plate and the second housing are mutually transmitted via the second transmission assembly; The first transmission assembly includes a first movement gear and a first movement gear shaft, the first movement gear shaft is mounted on the first movement gear, and the first movement gear shaft is connected to the first housing through the first slide slot; the second transmission assembly includes a second movement gear and a second movement gear shaft, the second movement gear shaft is mounted on the second movement gear, and the second movement gear shaft is connected to the second housing through the second slide slot; the first movement gear and the second movement gear are arranged oppositely in the accommodating cavity, and both are meshed with the rack; The limiting mechanism comprises a mounting plate, a first limiting boss, a second limiting boss and a return spring, wherein the mounting plate is mounted on the end surface of the intermediate housing and is located between the rack and the intermediate housing, the mounting plate is arranged between the first slide slot and the second slide slot, and a groove for accommodating the first limiting boss and the second limiting boss is arranged on the mounting plate; one end of the first limiting boss extends to the first slide slot and conflicts with the first moving gear shaft; one end of the second limiting boss extends to the second slide slot and conflicts with the second moving gear shaft; the return spring connects the first limiting boss and the second limiting boss; When the first moving gear and the second moving gear move upward or downward along the first sliding groove and the second sliding groove respectively, the first moving gear shaft and the second moving gear shaft squeeze the first limiting boss and the second limiting boss into the groove. When the first moving gear and the second moving gear move, the first limiting boss and the second limiting boss extend to the first sliding groove and the second sliding groove respectively under the action of the return spring.

2. The folding device according to claim 1, characterized in that: The first transmission assembly further includes a first connecting portion; the second transmission assembly further includes a second connecting portion; the first connecting portion is mounted on the first movement gear shaft and connected to the first support plate; the second connecting portion is mounted on the second movement gear shaft and connected to the second support plate; When the first shell and the second shell are folded, the first moving gear and the second moving gear move from the first position to the second position, and the first moving gear and the second moving gear rotate in opposite directions. The first moving gear moves along the extension direction of the first slide groove, and the second moving gear moves along the extension direction of the second slide groove; the first connecting portion drives the first support plate to deflect toward the accommodating cavity; the second connecting portion drives the second support plate to deflect toward the accommodating cavity to form an avoidance space between the first support plate and the second support plate.

3. The folding device according to claim 1, characterized in that: The supporting mechanism also includes a first connecting rod, a second connecting rod, a first limiting slider and a second limiting slider, one end of the first connecting rod is rotatably connected to the first supporting plate, and the other end of the first connecting rod is rotatably connected to the end surface of the intermediate shell; the first limiting slider is movably mounted on the first connecting rod, and the first connecting rod is connected to the first connecting part through the first limiting slider; one end of the second connecting rod is rotatably connected to the second supporting plate, and the other end of the second connecting rod is rotatably connected to the end surface of the intermediate shell; the second limiting slider is movably mounted on the second connecting rod, and the second connecting rod is connected to the second connecting part through the second limiting slider.

4. The folding device according to claim 3, characterized in that: A first rotation point and a second rotation point are provided on both sides of the intermediate shell; a first rotation hole and a first linkage hole are provided on the first support plate, the first rotation hole is provided on one side of the first support plate and is located in the extension direction of the first support plate, and the first rotation hole is rotatably connected to the first rotation point; the first linkage hole is provided at one end of the first support plate and is rotatably connected to one end of the first connecting rod; A second rotation hole and a second linkage hole are provided on the second support plate. The second rotation hole is provided on one side of the second support plate and is located in the extension direction of the second support plate. The second rotation hole is rotationally connected to the second rotation point; the second linkage hole is provided at one end of the second support plate and is rotationally connected to one end of the second connecting rod.

5. The folding device according to claim 3, characterized in that: The first connecting portion is provided with a first arc groove, the first arc groove is located on a circle with the rotating shaft of the first moving gear shaft as the center, the first limiting slider is provided with a first cylindrical slide inserted into the first arc groove and sliding along the first arc groove; the first connecting rod is provided with a third slide groove, and the first limiting slider is provided with a first linear slide inserted into the third slide groove and sliding along the third slide groove; The second connecting portion is provided with a second arc groove, and the second arc groove is located on a circle with the rotating axis of the second moving gear shaft as the center; the second limiting slider is provided with a second cylindrical slide inserted into the second arc groove and sliding along the second arc groove; the second connecting rod is provided with a fourth slide groove, and the second limiting slider is provided with a second linear slide inserted into the fourth slide groove and sliding along the fourth slide groove.

6. The folding device according to claim 1, characterized in that: The folding device also includes a synchronous movement mechanism, which includes a first synchronous member, a second synchronous member, a first connecting member and a second connecting member; a first synchronous gear is provided at one end of the first synchronous member, and a first connecting hole is provided at the other end of the first synchronous member; the first synchronous gear is rotatably mounted on the rack, and a first connecting member is provided with a first connecting column that is embedded in the first movement gear and rotatably connected to the first connecting hole; a second synchronous gear is provided at one end of the second synchronous member, and a second connecting hole is provided at the other end of the second synchronous member; the second synchronous gear is rotatably mounted on the rack, and the first synchronous gear and the second synchronous gear are meshed; a second connecting column is provided on the second connecting member that is embedded in the second movement gear and rotatably connected to the second connecting hole.

7. The folding device according to claim 1, characterized in that: The folding device further comprises an opening and closing mechanism, wherein the opening and closing mechanism comprises a first pressure rod, a second pressure rod, a first compression spring and a second compression spring, wherein the first pressure rod and the first compression spring are installed in the first shell, and a first mounting hole for accommodating the first compression spring is provided in the first shell; and a second mounting hole for accommodating the second compression spring is provided in the second shell; A first guide surface and a second guide surface are provided on both sides of the intermediate shell; one end of the first pressure rod is displaceably installed in the first mounting hole and is connected to the first compression spring, and the other end of the first pressure rod is in contact with the first guide surface; one end of the second pressure rod is displaceably installed in the second mounting hole and is connected to the second compression spring, and the other end of the second pressure rod is in contact with the second guide surface; when the first shell and the second shell are folded, the first pressure rod moves along the first guide surface, and the second pressure rod moves along the second guide surface.

8. The folding device according to claim 7, characterized in that: One end of the first pressure rod close to the first guide surface is provided with a first arcuate surface matching the first guide surface, and one end of the second pressure rod close to the second guide surface is provided with a second arcuate surface matching the second guide surface.

9. A flexible screen mobile terminal, characterized in that: It comprises a flexible screen and the folding device according to any one of claims 1 to 8, wherein the flexible screen is arranged on the first shell, the second shell, the first support plate and the second support plate.

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