Folding device, display screen assembly and intelligent terminal equipment

Abstract

The invention discloses a folding device, a display screen assembly and intelligent terminal equipment, the folding device comprises a base, a first rotating arm, a first connecting piece, a first fixing structure, a first connecting arm, a second rotating arm, a second connecting piece, a second fixing structure and a second connecting arm, and the first rotating arm and the second rotating arm are rotatably connected to the base; the first connecting piece and the second connecting piece are slidably connected to the first rotating arm and the second rotating arm correspondingly, and the first fixing structure and the second fixing structure are used for keeping the first connecting piece to be located at a first preset position relative to the first rotating arm and keeping the second connecting piece to be located at a second preset position relative to the second rotating arm correspondingly. The first connecting arm and the second connecting arm are rotationally connected to the base, and the first connecting arm and the second connecting arm are rotationally connected to the first connecting piece and the second connecting piece correspondingly. By means of the folding device, the folding device can keep the flexible screen in the folded state and the unfolded state.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent terminal equipment, and in particular to a folding device, a display screen assembly and an intelligent terminal equipment. Background Art

[0002] At present, flexible screens are widely used in smart terminal devices (such as tablets, mobile phones, smart watches, laptops, etc.). The bendable characteristics of flexible screens are combined with hinge mechanisms to realize the folding and unfolding of flexible screens, so that smart terminal devices can be suitable for different usage scenarios.

[0003] However, the flexible screen has a certain elasticity. When the flexible screen is deformed to switch to the folded state and the unfolded state, the flexible screen has an elastic force. The elastic force will cause the flexible screen to rebound and cause the hinge mechanism to be unable to keep the flexible screen in the folded state and the unfolded state. Summary of the invention

[0004] The embodiments of the present invention disclose a folding device, a display screen assembly and a smart terminal device. The folding device can keep the flexible screen in a folded state and an unfolded state by providing a force through a first holding structure and a second holding structure.

[0005] In a first aspect, an embodiment of the present invention discloses a folding device, comprising a base, a first rotating arm, a first connecting member, a first holding structure, a first connecting arm, a second rotating arm, a second connecting member, a second holding structure and a second connecting arm, wherein one end of the first rotating arm is rotatably connected to the base, and the first connecting member is slidably connected to the first holding structure at the other end of the first rotating arm, the first holding structure is arranged between the first rotating arm and the first connecting member, and the first holding structure is used to provide a force to keep the first connecting member sliding to a first preset position relative to the first rotating arm, the first preset position at least includes a first position and a second position, one end of the first connecting arm is rotatably connected to the base, the other end of the first connecting arm is rotatably connected to the first connecting member, one end of the second rotating arm is rotatably connected to the base, the second connecting member is slidably connected to the other end of the second rotating arm, the second holding structure is arranged between the second rotating arm and the second connecting member, the second holding structure is used to provide a force to keep the second connecting member sliding to a second preset position relative to the second rotating arm, the second preset position at least includes a third position and a fourth position, one end of the second connecting arm is rotatably connected to the base, and the other end of the second connecting arm is rotatably connected to the second connecting member;

[0006] Wherein, when the first rotating arm and the second rotating arm rotate relative to the base and approach each other, the first connecting member rotates relative to the base along with the first rotating arm, and the first connecting member slides relative to the first rotating arm in a direction away from the base to the first position, the first connecting arm rotates relative to the base and the first connecting member, the second connecting member rotates relative to the base along with the second rotating arm, and the second connecting member slides relative to the second rotating arm in a direction away from the base to the third position, and the second connecting arm rotates relative to the base and the second connecting member;

[0007] When the first rotating arm and the second rotating arm rotate relative to the base and move away from each other, the first connecting member rotates with the first rotating arm relative to the base, and the first connecting member slides to the second position relative to the first rotating arm in a direction close to the base, the first connecting arm rotates relative to the base and the first connecting member, the second connecting member rotates with the second rotating arm relative to the base, and the second connecting member slides to the fourth position relative to the second rotating arm in a direction close to the base, and the second connecting arm rotates relative to the base and the second connecting member.

[0008] As an optional implementation, in an embodiment of the present invention, the first holding structure includes a first clamping portion and two second clamping portions, one of the first clamping portion and the second clamping portion is provided on the first rotating arm, and the other of the first clamping portion and the second clamping portion is provided on the first connecting member, and the two second clamping portions are arranged at intervals along the direction in which the first connecting member slides relative to the first rotating arm, and when the first connecting member slides relative to the first rotating arm to the first position, the first clamping portion is clamped and connected to the second clamping portion of the two second clamping portions that is away from the base, and when the first connecting member slides relative to the first rotating arm to the second position, the first clamping portion is clamped and connected to the second clamping portion of the two second clamping portions that is close to the base;

[0009] The second holding structure includes a third clamping portion and two fourth clamping portions, one of the third clamping portion and the fourth clamping portion is arranged on the second rotating arm, and the other of the third clamping portion and the fourth clamping portion is arranged on the second connecting member, and the two fourth clamping portions are arranged at intervals along the direction in which the second connecting member slides relative to the second rotating arm, and when the second connecting member slides to the third position relative to the second rotating arm, the third clamping portion is clamped and connected to the fourth clamping portion of the two fourth clamping portions away from the base, and when the second connecting member slides to the fourth position relative to the second rotating arm, the third clamping portion is clamped and connected to the fourth clamping portion of the two fourth clamping portions close to the base.

[0010] As an optional implementation, in an embodiment of the present invention, the first holding structure further includes a first holding member and a first elastic member, the first holding member can be slidably disposed on the first connecting member, the first holding member is provided with the first clamping portion, the second clamping portion is provided on the first rotating arm, the first elastic member is provided between the first holding member and the first connecting member, and the first elastic member is used to provide an elastic force to enable the first clamping portion to be clamped and connected to the second clamping portion when the first connecting member slides to the first position or the second position relative to the first rotating arm;

[0011] The second holding structure also includes a second holding member and a second elastic member. The second holding member can be slidably disposed on the second connecting member. The second holding member is provided with the third clamping portion. The fourth clamping portion is disposed on the second rotating arm. The second elastic member is disposed between the second holding member and the second connecting member. The second elastic member is used to provide an elastic force to enable the third clamping portion to be clamped and connected to the fourth clamping portion when the second connecting member slides to the third position or the fourth position relative to the second rotating arm.

[0012] As an optional implementation, in an embodiment of the present invention, the first connecting member is provided with a first guide post, the first retaining member is provided with a second guide post, the second guide post is arranged toward the first guide post, and the two ends of the first elastic member are respectively sleeved on the first guide post and the second guide post;

[0013] The second connecting member is provided with a third guide post, the second holding member is provided with a fourth guide post, the fourth guide post is arranged toward the third guide post, and two ends of the second elastic member are respectively sleeved on the third guide post and the fourth guide post.

[0014] As an optional implementation, in an embodiment of the present invention, the first connecting member is provided with a first sliding groove and a first mounting groove which are connected to each other, the first rotating arm is slidably connected to the first sliding groove, the first holding member can be slidably arranged in the first mounting groove, one end of the first elastic member is connected to a side of the first mounting groove facing the first sliding groove, and the other end of the first elastic member is connected to a side of the first holding member facing away from the first sliding groove;

[0015] The second connecting member is provided with a second sliding groove and a second mounting groove which are interconnected. The second rotating arm is slidably connected to the second sliding groove. The second retaining member can be slidably disposed in the second mounting groove. One end of the second elastic member is connected to a side of the second mounting groove facing the second sliding groove, and the other end of the second elastic member is connected to a side of the second retaining member facing away from the first sliding groove.

[0016] As an optional embodiment, in an embodiment of the present invention, the folding device also includes a first support plate and a second support plate, the first support plate can be movably connected to the first connecting member and the first connecting arm, when the first connecting arm rotates relative to the first connecting member and the base, the first support plate moves relative to the first connecting member and the first connecting arm to change the angle between the first support plate and the first connecting member, and the second support plate can be movably connected to the second connecting member and the second connecting arm, when the second connecting arm rotates relative to the second connecting member and the base, the second support plate moves relative to the second connecting member and the second connecting arm to change the angle between the second support plate and the second connecting member.

[0017] As an optional implementation, in an embodiment of the present invention, the first connecting member has a first surface, the first surface is provided with a first mounting groove, the first retaining structure is at least partially located in the first mounting groove, and the first supporting plate is located on one side of the first surface on the first connecting member and covers the first mounting groove;

[0018] The second connecting member has a second surface, the second surface is provided with a second mounting groove, the first retaining structure is at least partially located in the second mounting groove, and the second supporting plate is located on one side of the second surface on the second connecting member and covers the second mounting groove.

[0019] As an optional embodiment, in an embodiment of the present invention, the first connecting member has a first inclined surface, the first support plate has a first limiting surface, the second connecting member has a second inclined surface, and the second support plate has a second limiting surface. When the first connecting arm and the second connecting arm rotate relative to the base and approach each other, the first limiting surface is used to abut against the first inclined surface to limit the angle between the first support plate and the first connecting member, and the second limiting surface abuts against the second inclined surface to limit the angle between the second support plate and the second connecting member.

[0020] As an optional implementation, in an embodiment of the present invention, the first support plate is rotatably connected to one of the first connecting member and the first connecting arm, and is connected to the other of the two in an arcuate sliding manner, and the second support plate is rotatably connected to one of the second connecting member and the second connecting arm, and is connected to the other of the two in an arcuate sliding manner.

[0021] As an optional implementation, in an embodiment of the present invention, the rotation axis of the first rotating arm relative to the base and the rotation axis of the first connecting arm relative to the base are parallel to each other and do not overlap;

[0022] A rotation axis of the second rotating arm relative to the base and a rotation axis of the second connecting arm relative to the base are parallel to each other and do not overlap.

[0023] In a second aspect, an embodiment of the present invention discloses a display screen assembly, comprising a flexible screen and a folding device of the first aspect, wherein the first connecting member and the second connecting member are both connected to a non-display surface of the flexible screen, and when the first rotating arm and the second rotating arm rotate relative to a base and approach each other, the first connecting member and the second connecting member drive the flexible screen to fold the flexible screen, and when the first rotating arm and the second rotating arm rotate relative to the base and move away from each other, the first connecting member and the second connecting member drive the flexible screen to unfold the flexible screen.

[0024] In a third aspect, an embodiment of the present invention discloses a smart terminal device, comprising the display screen assembly of the second aspect.

[0025] Compared with the prior art, the embodiments of the present invention have at least the following beneficial effects:

[0026] In an embodiment of the present invention, one end of the first rotating arm is rotatably connected to the base, and the other end of the first rotating arm is slidably connected to the connecting piece. When the first rotating arm rotates relative to the base, the first connecting piece rotates relative to the base accordingly. At the same time, the first connecting arm is rotatably connected to the base and the first connecting piece, so that when the first connecting piece rotates relative to the base, the first connecting piece can slide away from or close to the base relative to the first rotating arm to adjust the distance between the first rotating arm and the base, and one end of the second rotating arm is rotatably connected to the base, and the other end of the second rotating arm is slidably connected to the connecting piece. When the second rotating arm rotates relative to the base, the second connecting piece rotates relative to the base accordingly. At the same time, the second connecting arm is rotatably connected to the base and the second connecting piece, so that when the second connecting piece rotates relative to the base, the second connecting piece can slide away from or close to the base relative to the second rotating arm to adjust the distance between the second rotating arm and the base. Based on this, the first connecting member and the second connecting member are connected to the flexible screen, and when the first connecting member and the second connecting member rotate relative to the base, the flexible screen can be driven to fold or unfold. For example, when the first rotating arm and the second rotating arm rotate relative to the base and approach each other, the first connecting member and the second connecting member rotate relative to the base and drive the flexible screen to fold. During the folding process, the first connecting member slides away from the base to the first position, and the second connecting member slides away from the base to the third position. The distance between the first connecting member and the second connecting member and the base increases, which can avoid the folding device from squeezing the flexible screen and causing damage to the flexible screen during the folding process. When the first rotating arm and the second rotating arm rotate relative to the base and move away from each other, the first connecting member and the second connecting member rotate relative to the base and drive the flexible screen to unfold. During the unfolding process, the first connecting member slides close to the base to the second position, and the second connecting member slides close to the base to the fourth position. The distance between the first connecting member and the second connecting member and the base decreases, which can avoid the folding device from stretching the flexible screen and causing damage to the flexible screen during the unfolding process.

[0027] Furthermore, the first holding structure provides a force to keep the first connection member in the first position relative to the first rotating arm, and the second holding structure provides a force to keep the second connection member in the third position relative to the second rotating arm. At this time, the flexible screen can be kept suspended in the folded state. At the same time, the first holding structure can also provide a force to keep the first connection member in the second position relative to the first rotating arm, and the second holding structure can also provide a force to keep the second connection member in the fourth position relative to the second rotating arm. At this time, the flexible screen can be kept suspended in the unfolded state. In this way, the folding device can keep the flexible screen in the folded state and the unfolded state by providing forces through the first holding structure and the second holding structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this technical field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 is a structural schematic diagram of a folding device (in unfolded state) disclosed in Embodiment 1 of the present invention;

[0030] Figure 2 It is a structural schematic diagram of a folding device (folded state) disclosed in Embodiment 1 of the present invention;

[0031] Figure 3 is a structural schematic diagram of a folding device having a first support plate and a second support plate disclosed in Embodiment 1 of the present invention;

[0032] Figure 4 It is a schematic diagram of the exploded structure of a folding device (partial structure is hidden) disclosed in the first embodiment of the present invention;

[0033] Figure 5 is a schematic diagram of the internal structure of a folding device disclosed in Embodiment 1 of the present invention;

[0034] Figure 6 is a structural schematic diagram of a display screen assembly disclosed in Embodiment 2 of the present invention;

[0035] Figure 7 is a schematic diagram of the structure of the intelligent terminal device (folded state) disclosed in Embodiment 3 of the present invention;

[0036] Figure 8 It is a structural diagram of the intelligent terminal device (in unfolded state) disclosed in Embodiment 3 of the present invention.

[0037] Description of main reference numerals

[0038] 100, folding device; 10, base; 11, first rotating arm; 12, first connecting member; 12a, first guide column; 12b, first sliding groove; 12c, first mounting groove; 121, first surface; 122, first inclined surface; 13a, first engaging portion; 13b, second engaging portion; 131, first holding member; 131a, second guide column; 132, first elastic member; 14, first connecting arm; 15, second rotating arm; 16, second connecting member; 16a, third guide column; 16b, Second sliding groove; 16c, second mounting groove; 161, second surface; 162, second inclined surface; 17a, third engaging portion; 17b, fourth engaging portion; 171, second retaining member; 171a, fourth guide column; 172, second elastic member; 18, second connecting arm; 191, first supporting plate; 191a, first limiting surface; 192, second supporting plate; 192a, second limiting surface; 200, display screen assembly; 20, flexible screen; 20a, non-display surface; 300, smart terminal device. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the present invention, the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like are based on the directions or positional relationships shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction.

[0041] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0042] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0044] The present invention discloses a folding device, a display screen assembly and an intelligent terminal device. The folding device can keep the flexible screen in a folded state and an unfolded state by providing a force through a first holding structure and a second holding structure.

[0045] Embodiment 1

[0046] See also Figure 1 and Figure 2 , is a structural schematic diagram of a folding device 100 provided in Embodiment 1 of the present invention, the folding device 100 includes a base 10, a first rotating arm 11, a first connecting member 12, a first holding structure, a first connecting arm 14, a second rotating arm 15, a second connecting member 16, a second holding structure and a second connecting arm 18, one end of the first rotating arm 11 is rotatably connected to the base 10, the first connecting member 12 is slidably connected to the other end of the first rotating arm 11, the first holding structure is arranged between the first rotating arm 11 and the first connecting member 12, the first holding structure is used to provide a force to keep the first connecting member 12 sliding to a first preset position relative to the first rotating arm 11, and the first preset position at least includes The first position and the second position are included, one end of the first connecting arm 14 is rotatably connected to the base 10, the other end of the first connecting arm 14 is rotatably connected to the first connecting member 12, one end of the second rotating arm 15 is rotatably connected to the base 10, the second connecting member 16 is slidably connected to the other end of the second rotating arm 15, the second holding structure is provided between the second rotating arm 15 and the second connecting member 16, the second holding structure is used to provide a force to keep the second connecting member 16 sliding to a second preset position relative to the second rotating arm 15, the second preset position at least includes a third position and a fourth position, one end of the second connecting arm 18 is rotatably connected to the base 10, and the other end of the second connecting arm 18 is rotatably connected to the second connecting member 16;

[0047] Among them, Figure 1As shown, when the first rotating arm 11 and the second rotating arm 15 rotate relative to the base 10 and move away from each other, the first connecting member 12 rotates with the first rotating arm 11 relative to the base 10, and the first connecting member 12 slides to the second position relative to the first rotating arm 11 in a direction close to the base 10, the first connecting arm 14 rotates relative to the base 10 and the first connecting member 12, the second connecting member 16 rotates with the second rotating arm 15 relative to the base 10, and the second connecting member 16 slides to the fourth position relative to the second rotating arm 15 in a direction close to the base 10, and the second connecting arm 18 rotates relative to the base 10 and the second connecting member 16. Figure 2 As shown, when the first rotating arm 11 and the second rotating arm 15 rotate relative to the base 10 and approach each other, the first connecting member 12 rotates with the first rotating arm 11 relative to the base 10, and the first connecting member 12 slides to a first position relative to the first rotating arm 11 in a direction away from the base 10, the first connecting arm 14 rotates relative to the base 10 and the first connecting member 12, the second connecting member 16 rotates with the second rotating arm 15 relative to the base 10, and the second connecting member 16 slides to a third position relative to the second rotating arm 15 in a direction away from the base 10, and the second connecting arm 18 rotates relative to the base 10 and the second connecting member 16.

[0048] In this embodiment, one end of the first rotating arm 11 is rotatably connected to the base 10, and the other end of the first rotating arm 11 is slidably connected to the connecting member. When the first rotating arm 11 rotates relative to the base 10, the first connecting member 12 rotates relative to the base 10 accordingly. At the same time, the first connecting arm 14 is rotatably connected to the base 10 and the first connecting member 12, so that when the first connecting member 12 rotates relative to the base 10, the first connecting member 12 can slide away from or close to the base 10 relative to the first rotating arm 11, so as to adjust the distance between the first rotating arm 11 and the base 10, and one end of the second rotating arm 15 is rotatably connected to the base 10, and the other end of the second rotating arm 15 is slidably connected to the connecting member. When the second rotating arm 15 rotates relative to the base 10, the second connecting member 16 rotates relative to the base 10 accordingly. At the same time, the second connecting arm 18 is rotatably connected to the base 10 and the second connecting member 16, so that when the second connecting member 16 rotates relative to the base 10, the second connecting member 16 can slide away from or close to the base 10 relative to the second rotating arm 15, so as to adjust the distance between the second rotating arm 15 and the base 10. Based on this, the first connecting member 12 and the second connecting member 16 are connected to the flexible screen. When the first connecting member 12 and the second connecting member 16 rotate relative to the base 10, they can drive the flexible screen to fold or unfold. For example, when the first rotating arm 11 and the second rotating arm 15 rotate relative to the base 10 and approach each other, the first connecting member 12 and the second connecting member 16 rotate relative to the base 10 and drive the flexible screen to fold. During the folding process, the first connecting member 12 slides away from the base 10 to the first position, and the second connecting member 16 slides away from the base 10 to the third position. The distance between the first connecting member 12 and the second connecting member 16 and the base 10 increases, which can prevent the folding device 100 from squeezing the flexible screen and causing damage to the flexible screen during the folding process. When the first rotating arm 11 and the second rotating arm 15 rotate relative to the base 10 and move away from each other, the first connecting member 12 and the second connecting member 16 rotate relative to the base 10 and drive the flexible screen to unfold. During the unfolding process, the first connecting member 12 slides close to the base 10 to the second position, and the second connecting member 16 slides close to the base 10 to the fourth position. The distance between the first connecting member 12 and the second connecting member 16 and the base 10 is reduced, which can prevent the folding device 100 from stretching the flexible screen and causing damage to the flexible screen during the unfolding process.

[0049] Furthermore, the first holding structure provides a force to keep the first connecting member 12 in the first position relative to the first rotating arm 11, and the second holding structure provides a force to keep the second connecting member 16 in the third position relative to the second rotating arm 15. At this time, the flexible screen can be kept suspended in the folded state. At the same time, the first holding structure can also provide a force to keep the first connecting member 12 in the second position relative to the first rotating arm 11, and the second holding structure can also provide a force to keep the second connecting member 16 in the fourth position relative to the second rotating arm 15. At this time, the flexible screen can be kept suspended in the unfolded state. In this way, the folding device 100 can keep the flexible screen in the folded state and the unfolded state by providing forces through the first holding structure and the second holding structure.

[0050] in, Figure 1 and Figure 2 The purpose is to illustrate the way in which the folding device 100 realizes the unfolding and folding of the flexible screen. Figure 3 and Figure 4 .

[0051] In some embodiments, such as Figure 3 and Figure 4As shown, the first holding structure includes a first engaging portion 13a and two second engaging portions 13b, one of the first engaging portion 13a and the second engaging portion 13b is provided on the first rotating arm 11, and the other of the two is provided on the first connecting member 12, and the two second engaging portions are arranged at intervals along the direction in which the first connecting member 12 slides relative to the first rotating arm 11. When the first connecting member 12 slides to the first position relative to the first rotating arm 11, the first engaging portion 13a is engaged and connected to the second engaging portion 13b of the two second engaging portions 13b far away from the base 10. When the first connecting member 12 slides to the second position relative to the first rotating arm 11, the first engaging portion 13a is engaged and connected to the second engaging portion 13b of the two second engaging portions 13b close to the base 10. The second holding structure includes a third engaging portion 17a and two fourth engaging portions 17b, one of the third engaging portion 17a and the fourth engaging portion 17b is provided on the second rotating arm 15, and the other of the third engaging portion 17a and the fourth engaging portion 17b is provided on the second connecting member 16, and the two fourth engaging portions 17b are arranged at intervals along the direction in which the second connecting member 16 slides relative to the second rotating arm 15. When the second connecting member 16 slides to the third position relative to the second rotating arm 15, the third engaging portion 17a is engaged and connected to the fourth engaging portion 17b of the two fourth engaging portions 17b away from the base 10. When the second connecting member 16 slides to the fourth position relative to the second rotating arm 15, the third engaging portion 17a is engaged and connected to the fourth engaging portion 17b of the two fourth engaging portions 17b close to the base 10. In this way, when the first rotating arm 11 and the second rotating arm 15 rotate relative to the base 10 and approach each other, the first connecting member 12 and the second connecting member 16 rotate relative to the base 10 and drive the flexible screen to fold. During the folding process, the first connecting member 12 slides away from the base 10 to the first position, and the second connecting member 16 slides away from the base 10 to the third position. At this time, the first clamping portion 13a is clamped and connected to the second clamping portion 13b of the two second clamping portions 13b away from the base 10, and the third clamping portion 17a is clamped and connected to the fourth clamping portion 17b of the two fourth clamping portions 17b away from the base 10, so that the first connecting member 12 remains in the first position and the second connecting member 16 remains in the third position. In this way, the flexible screen can remain suspended in the folded state. When the first rotating arm 11 and the second rotating arm 15 rotate relative to the base 10 and move away from each other, the first connecting member 12 and the second connecting member 16 rotate relative to the base 10 and drive the flexible screen to unfold. During the unfolding process, the first connecting member 12 slides close to the base 10 to the second position, and the second connecting member 16 slides close to the base 10 to the fourth position. At this time, the first clamping portion 13a is clamped and connected to the second clamping portion 13b of the two second clamping portions 13b close to the base 10, and the third clamping portion 17a is clamped and connected to the fourth clamping portion 17b of the two fourth clamping portions 17b close to the base 10, so that the first connecting member 12 remains in the second position and the second connecting member 16 remains in the fourth position. In this way, the flexible screen can remain hovering in the unfolded state.

[0052] Exemplarily, the first holding structure further includes a first holding member 131 and a first elastic member 132. The first holding member 131 can be slidably disposed on the first connecting member 12. The first holding member 131 is provided with a first engaging portion 13a, and the second engaging portion 13b is disposed on the first rotating arm 11. The first elastic member 132 is disposed between the first holding member 131 and the first connecting member 12. The first elastic member 132 is used to provide an elastic force when the first connecting member 12 slides to the first position or the second position relative to the first rotating arm 11 so that the first engaging portion 13a is engaged and connected to the second engaging portion 13b. 3b, the second holding structure also includes a second holding member 171 and a second elastic member 172, the second holding member 171 can be slidably disposed on the second connecting member 16, the second holding member 171 is provided with a third locking portion 17a, and the fourth locking portion 17b is disposed on the second rotating arm 15, and the second elastic member 172 is disposed between the second holding member 171 and the second connecting member 16, and the second elastic member 172 is used for providing an elastic force when the second connecting member 16 slides to the third position or the fourth position relative to the second rotating arm 15 so that the third locking portion 17a is locked and connected to the fourth locking portion 17b. In this way, when the first connecting member 12 slides away from the base 10 to the first position, and the second connecting member 16 slides away from the base 10 to the third position, the first holding member 131 slides relative to the first connecting member 12 under the elastic force of the first elastic member 132, so that the first engaging portion 13a is engaged with the second engaging portion 13b of the two second engaging portions 13b away from the base 10, and the second holding member 171 slides relative to the second connecting member 16 under the elastic force of the first elastic member 132, so that the third engaging portion 17a is engaged with the fourth engaging portion 17b of the two fourth engaging portions 17b away from the base 10. When the first connecting member 12 slides from the first position to the second position, and the second connecting member 16 slides from the third position to the fourth position, the first engaging portion 13a is disengaged from the second engaging portion 13b, the third engaging portion 17a is disengaged from the fourth engaging portion 17b, and the first elastic member 132 and the second elastic member 172 are compressed and have an elastic force. When the first connecting member 12 slides close to the base 10 to the second position, and the second connecting member 16 slides close to the base 10 to the fourth position, the first holding member 131 slides relative to the first connecting member 12 under the elastic force of the first elastic member 132, so that the first engaging portion 13a is engaged with the second engaging portion 13b of the two second engaging portions 13b close to the base 10, and the second holding member 171 slides relative to the second connecting member 16 under the elastic force of the first elastic member 132, so that the third engaging portion 17a is engaged with the fourth engaging portion 17b of the two fourth engaging portions 17b close to the base 10. Similarly, when the first connecting member 12 slides from the second position to the first position, and the second connecting member 16 slides from the fourth position to the third position, the first engaging portion 13a is disengaged from the second engaging portion 13b, and the third engaging portion 17a is disengaged from the fourth engaging portion 17b.

[0053] In some embodiments, the first connecting member 12 is provided with a first guide column 12a, the first retaining member 131 is provided with a second guide column 131a, the second guide column 131a is arranged toward the first guide column 12a, the two ends of the first elastic member 132 are respectively sleeved on the first guide column 12a and the second guide column 131a, the second connecting member 16 is provided with a third guide column 16a, the second retaining member 171 is provided with a fourth guide column 171a, the fourth guide column 171a is arranged toward the third guide column 16a, and the two ends of the second elastic member 172 are respectively sleeved on the third guide column 16a and the fourth guide column 171a. In this way, when the first elastic member 132 provides a force to make the first retaining member 131 slide relative to the first connecting member 12, the first elastic member 132 extends, and the first guide column 12a and the second guide column 131a are used to provide guidance for the extension of the first elastic member 132 to avoid distortion of the first elastic member 132 and reduce the service life of the first elastic member 132. When the first elastic member 132 is squeezed and compressed by the first retaining member 131, the first guide column 12a and the second guide column 131a can also provide guidance. When the second elastic member 172 provides a force to make the second retaining member 171 slide relative to the second connecting member 16, the second elastic member 172 extends, and the third guide column 16a and the fourth guide column 171a are used to provide guidance for the extension of the second elastic member 172 to avoid distortion of the second elastic member 172 and reduce the service life of the second elastic member 172. When the second elastic member 172 is squeezed and compressed by the second retaining member 171, the third guide column 16a and the fourth guide column 171a can also provide guidance.

[0054] For example, Figure 4As shown, the first connecting member 12 is provided with a first sliding groove 12b and a first mounting groove 12c that are connected to each other, the first rotating arm 11 is slidably connected to the first sliding groove 12b, the first holding member 131 can be slidably arranged in the first mounting groove 12c, one end of the first elastic member 132 is connected to a side of the first mounting groove 12c facing the first sliding groove 12b, and the other end of the first elastic member 132 is connected to a side of the first holding member 131 away from the first sliding groove 12b, the second connecting member 16 is provided with a second sliding groove 16b and a second mounting groove 16c that are connected to each other, the second rotating arm 15 is slidably connected to the second sliding groove 16b, the second holding member 171 can be slidably arranged in the second mounting groove 16c, one end of the second elastic member 172 is connected to a side of the second mounting groove 16c facing the second sliding groove 16b, and the other end of the second elastic member 172 is connected to a side of the second holding member 171 away from the first sliding groove 12b. In this way, the first rotating arm 11 and the first connecting member 12 are slidably connected through the first sliding groove 12b, and the second connecting arm 18 and the second connecting member 16 are slidably connected through the second sliding groove 16b. At the same time, on one hand, the first retaining member 131 is slidably arranged through the first mounting groove 12c, and the first mounting groove 12c is communicated with the first sliding groove 12b, so that the first retaining member 131 slides relative to the first mounting groove 12c so that the first engaging portion 13a can be engaged and connected to the second engaging portion 13b. On the other hand, the second retaining member 171 is slidably arranged through the second mounting groove 16c, and the second mounting groove 16c is communicated with the second sliding groove 16b, so that the second retaining member 171 slides relative to the second mounting groove 16c so that the third engaging portion 17a can be engaged and connected to the fourth engaging portion 17b. On the other hand, by using the first mounting groove 12c and the second mounting groove 16c to respectively set the first retaining member 131 and the second retaining member 171, the space occupied by the first retaining member 131 and the second retaining member 171 can be reduced. The overall volume of the folding device 100 is relatively small, which is conducive to maintaining the miniaturized design of the smart terminal device when applied to the smart terminal device.

[0055] In some embodiments, such as Figure 3 and Figure 5As shown, the folding device 100 also includes a first support plate 191 and a second support plate 192. The first support plate 191 can be movably connected to the first connecting member 12 and the first connecting arm 14. When the first connecting arm 14 rotates relative to the first connecting member 12 and the base 10, the first support plate 191 moves relative to the first connecting member 12 and the first connecting arm 14 to change the angle between the first support plate 191 and the first connecting member 12. The second support plate 192 can be movably connected to the second connecting member 16 and the second connecting arm 18. When the second connecting arm 18 rotates relative to the second connecting member 16 and the base 10, the second support plate 192 moves relative to the second connecting member 16 and the second connecting arm 18 to change the angle between the second support plate 192 and the second connecting member 16. In this way, when the first rotating arm 11 and the second rotating arm 15 rotate relative to the base 10 and approach each other, a roughly U-shaped accommodation space is formed between the first connecting member 12, the base 10 and the second connecting member 16. At this time, an angle is formed between the first supporting plate 191 and the first connecting member 12, and an angle is formed between the second supporting plate 192 and the second connecting member 16. This causes the shape of the accommodation space to change under the action of the first supporting plate 191 and the second supporting plate 192, and the bottom of the U-shape is formed into a water drop shape, that is, the first connecting member 12 and the second connecting member 16 are roughly parallel, and the first supporting plate 191 and the second supporting plate 192 are both inclined into the accommodation space. The first supporting plate 191 and the second supporting plate 192 are connected to the flexible screen, and the bent part of the flexible screen is in the shape of a water drop. The first supporting plate 191 and the second supporting plate 192 can provide support for the flexible screen and maintain the shape of the bent part of the flexible screen. In the figure, the state of the flexible screen in the accommodation space is shown by dotted lines.

[0056] For example, see again Figure 3 and Figure 4The first connecting member 12 has a first surface 121, the first surface 121 is provided with a first mounting groove 12c, the first holding structure is at least partially located in the first mounting groove 12c, the first support plate 191 is located on one side of the first surface 121 on the first connecting member 12 and blocks the first mounting groove 12c, the second connecting member 16 has a second surface 161, the second surface 161 is provided with a second mounting groove 16c, the first holding structure is at least partially located in the second mounting groove 16c, and the second support plate 192 is located on one side of the second surface 161 on the second connecting member 16 and blocks the second mounting groove 16c. In this way, on the one hand, by using the first mounting groove 12c to accommodate at least part of the first holding structure and the second mounting groove 16c to accommodate at least part of the second holding structure, the space occupied by the first holding structure and the second holding structure can be reduced, and the overall volume of the folding device 100 is relatively small. When applied to a smart terminal device, it is conducive to maintaining a miniaturized design of the smart terminal device. On the other hand, by using the first support plate 191 and the second support plate 192 to respectively cover the first mounting groove 12c and the second mounting groove 16c, the first retaining member 131 and the second retaining member 171 can be prevented from being exposed, thereby maintaining the appearance integrity of the folding device 100, and the first retaining member 131 and the second retaining member 171 can be protected, thereby reducing the risk of damage to the first retaining member 131 and the second retaining member 171 and increasing the service life of the folding device 100.

[0057] Alternatively, if Figure 5 As shown, the first connecting member 12 has a first inclined surface 122, the first support plate 191 has a first limiting surface 191a, the second connecting member 16 has a second inclined surface 162, and the second support plate 192 has a second limiting surface 192a. When the first connecting arm 14 and the second connecting arm 18 rotate relative to the base 10 and approach each other, the first limiting surface 191a is used to abut against the first inclined surface 122 to limit the angle between the first support plate 191 and the first connecting member 12, and the second limiting surface 192a abuts against the second inclined surface 162 to limit the angle between the second support plate 192 and the second connecting member 16. In this way, the angle between the first support plate 191 and the first connecting member 12 can be maintained by the abutment between the first limiting surface 191a and the first inclined surface 122, and the angle between the second support plate 192 and the second connecting member 16 can be maintained by the abutment between the second limiting surface 192a and the second inclined surface 162, thereby improving the stability of the support of the flexible screen by the first support plate 191 and the second support plate 192 and maintaining the shape of the bent part of the flexible screen.

[0058] In some embodiments, the first support plate 191 is connected to one of the first connecting member 12 and the first connecting arm 14 by rotation, and connected to the other by arc-shaped sliding, and the second support plate 192 is connected to one of the second connecting member 16 and the second connecting arm 18 by rotation, and connected to the other by arc-shaped sliding. This embodiment provides a variety of connection methods, which can form an angle between the first support plate 191 and the first connecting member 12, and an angle between the second support plate 192 and the second connecting member 16 when the first connecting member 12 and the second connecting member 16 rotate relative to the base 10. The selection can be based on actual conditions, and this embodiment does not specifically limit this.

[0059] Exemplarily, the rotation axis of the first rotating arm 11 relative to the base 10 and the rotation axis of the first connecting arm 14 relative to the base 10 are parallel to each other and do not overlap, and the rotation axis of the second rotating arm 15 relative to the base 10 and the rotation axis of the second connecting arm 18 relative to the base 10 are parallel to each other and do not overlap. Thus, taking the first rotating arm 11 and the first connecting arm 14 as an example, when the first rotating arm 11 rotates relative to the base 10, the first connecting member 12 rotates relative to the base 10, and the first connecting arm 14 rotates relative to the base 10 at the same time. At this time, since the rotation axis of the first rotating arm 11 relative to the base 10 and the rotation axis of the first connecting arm 14 relative to the base 10 are parallel to each other and do not overlap, that is, the rotation centers do not overlap, the first rotating arm 11 and the first connecting arm 14 form a displacement difference when rotating, and the distance between the first connecting member 12 and the base 10 will change, so that when the first connecting member 12 rotates relative to the base 10, the first connecting member 12 slides relative to the first rotating arm 11. The second rotating arm 15 and the second rotating arm 15 can also utilize the displacement difference formed during rotation, so that the second connecting member 16 rotates relative to the base 10 while the second connecting member 16 slides relative to the second rotating arm 15, which will not be repeated.

[0060] The first embodiment of the present invention provides a folding device 100, wherein one end of a first rotating arm 11 is rotatably connected to a base 10, and the other end of the first rotating arm 11 is slidably connected to a connecting member. When the first rotating arm 11 rotates relative to the base 10, the first connecting member 12 rotates relative to the base 10 accordingly. At the same time, a first connecting arm 14 is rotatably connected to the base 10 and the first connecting member 12, so that when the first connecting member 12 rotates relative to the base 10, the first connecting member 12 can slide relative to the first rotating arm 11 away from or close to the base 10, so as to adjust the first rotating arm 11 and the first connecting member 12. The distance between the base 10 is adjusted by rotating one end of the second rotating arm 15 and rotatably connected to the base 10, and the other end of the second rotating arm 15 is slidably connected to the connecting piece. When the second rotating arm 15 rotates relative to the base 10, the second connecting piece 16 rotates relative to the base 10. At the same time, the second connecting arm 18 is rotatably connected to the base 10 and the second connecting piece 16, so that when the second connecting piece 16 rotates relative to the base 10, the second connecting piece 16 can slide relative to the second rotating arm 15 away from or close to the base 10 to adjust the distance between the second rotating arm 15 and the base 10. Based on this, the first connecting member 12 and the second connecting member 16 are connected to the flexible screen. When the first connecting member 12 and the second connecting member 16 rotate relative to the base 10, they can drive the flexible screen to fold or unfold. For example, when the first rotating arm 11 and the second rotating arm 15 rotate relative to the base 10 and approach each other, the first connecting member 12 and the second connecting member 16 rotate relative to the base 10 and drive the flexible screen to fold. During the folding process, the first connecting member 12 slides away from the base 10 to the first position, and the second connecting member 16 slides away from the base 10 to the third position. The distance between the first connecting member 12 and the second connecting member 16 and the base 10 increases, which can prevent the folding device 100 from squeezing the flexible screen and causing damage to the flexible screen during the folding process. When the first rotating arm 11 and the second rotating arm 15 rotate relative to the base 10 and move away from each other, the first connecting member 12 and the second connecting member 16 rotate relative to the base 10 and drive the flexible screen to unfold. During the unfolding process, the first connecting member 12 slides close to the base 10 to the second position, and the second connecting member 16 slides close to the base 10 to the fourth position. The distance between the first connecting member 12 and the second connecting member 16 and the base 10 is reduced, which can prevent the folding device 100 from stretching the flexible screen and causing damage to the flexible screen during the unfolding process.

[0061] Furthermore, the first holding structure provides a force to keep the first connecting member 12 in the first position relative to the first rotating arm 11, and the second holding structure provides a force to keep the second connecting member 16 in the third position relative to the second rotating arm 15. At this time, the flexible screen can be kept suspended in the folded state. At the same time, the first holding structure can also provide a force to keep the first connecting member 12 in the second position relative to the first rotating arm 11, and the second holding structure can also provide a force to keep the second connecting member 16 in the fourth position relative to the second rotating arm 15. At this time, the flexible screen can be kept suspended in the unfolded state. In this way, the folding device 100 can keep the flexible screen in the folded state and the unfolded state by providing forces through the first holding structure and the second holding structure.

[0062] Embodiment 2

[0063] See also Figure 6 , which is a structural schematic diagram of a display screen assembly 200 provided in Embodiment 2 of the present invention, including a flexible screen 20 and a folding device 100 of Embodiment 1, wherein the first connecting member 12 and the second connecting member 16 are both connected to the non-display surface 20a of the flexible screen 20, and when the first rotating arm and the second rotating arm rotate relative to the base and approach each other, the first connecting member 12 and the second connecting member 16 drive the flexible screen 20 to fold the flexible screen 20, and when the first rotating arm and the second rotating arm rotate relative to the base and move away from each other, the first connecting member 12 and the second connecting member 16 drive the flexible screen 20 to unfold the flexible screen 20.

[0064] In this embodiment, the first connector 12 and the second connector 16 can drive the flexible screen 20 to achieve folding of the flexible screen 20, and during the folding process, the distance between the first connector 12 and the second connector 16 and the base increases, that is, the folding device 100 can be extended to avoid the folding device 100 applying pressure to the flexible screen 20 and causing damage to the flexible screen 20 when the folding device 100 drives the flexible screen 20 to achieve folding of the flexible screen 20. At the same time, the first connector 12 and the second connector 16 can also drive the flexible screen 20 to achieve unfolding of the flexible screen 20, and during the unfolding process, the distance between the first connector 12 and the second connector 16 and the base decreases, that is, the folding device 100 can be shortened to avoid the folding device 100 applying tension to the flexible screen 20 and causing damage to the flexible screen 20 when the folding device 100 drives the flexible screen 20 to achieve unfolding of the flexible screen 20.

[0065] Embodiment 2 of the present invention provides a display screen assembly 200, wherein the folding device 100 can realize the folding and unfolding of the flexible screen 20, and the folding device 100 can keep the flexible screen 20 in a folded state and an unfolded state.

[0066] Embodiment 3

[0067] Please also read Figure 7 and Figure 8 , is a structural diagram of a smart terminal device 300 provided in Embodiment 3 of the present invention, including the display screen assembly 200 of Embodiment 2.

[0068] in, Figure 7 The folding device of the display screen assembly 200 and the flexible screen are shown in the folded state. Figure 8 The folding device of the display screen assembly 200 and the unfolded state of the flexible screen are shown.

[0069] Exemplarily, the smart terminal device 300 may be a tablet computer, a mobile phone, a smart watch, a laptop computer, etc., which is not specifically limited in this embodiment.

[0070] The folding and unfolding of the flexible screen can be achieved through the folding device, which can meet the different needs of users for using the smart terminal device 300. For example, when the flexible screen is in the folded state, the smart terminal device 300 occupies less space, which is convenient for carrying, storing and transporting the smart terminal device 300. When the flexible screen is in the unfolded state, it can provide a larger display area, which is convenient for users to operate the flexible screen and view the content displayed on the flexible screen.

[0071] Embodiment 3 of the present invention provides a smart terminal device 300, wherein the folding device 100 can realize the folding and unfolding of the flexible screen 20, and the folding device can keep the flexible screen in a folded state and an unfolded state.

[0072] The above is a detailed introduction to a folding device, a display screen assembly and a smart terminal device disclosed in the embodiments of the present invention. This article uses individual examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the folding device, the display screen assembly and the smart terminal device of the present invention and their core ideas; at the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A folding device, characterized in that: include: Base; A first rotating arm, one end of which is rotatably connected to the base; a first connecting member, the first connecting member being slidably connected to the other end of the first rotating arm; a first retaining structure, the first retaining structure being disposed between the first rotating arm and the first connecting member, the first retaining structure being used to provide a force to keep the first connecting member from sliding relative to the first rotating arm to a first preset position, the first preset position at least including a first position and a second position; A first connecting arm, one end of the first connecting arm is rotatably connected to the base, and the other end of the first connecting arm is rotatably connected to the first connecting member; a second rotating arm, one end of which is rotatably connected to the base; a second connecting member, the second connecting member being slidably connected to the other end of the second rotating arm; a second retaining structure, the second retaining structure being disposed between the second rotating arm and the second connecting member, the second retaining structure being used to provide a force to keep the second connecting member sliding relative to the second rotating arm to a second preset position, the second preset position at least including a third position and a fourth position; as well as A second connecting arm, one end of the second connecting arm is rotatably connected to the base, and the other end of the second connecting arm is rotatably connected to the second connecting member; Wherein, when the first rotating arm and the second rotating arm rotate relative to the base and approach each other, the first connecting member rotates relative to the base along with the first rotating arm, and the first connecting member slides relative to the first rotating arm in a direction away from the base to the first position, the first connecting arm rotates relative to the base and the first connecting member, the second connecting member rotates relative to the base along with the second rotating arm, and the second connecting member slides relative to the second rotating arm in a direction away from the base to the third position, and the second connecting arm rotates relative to the base and the second connecting member; When the first rotating arm and the second rotating arm rotate relative to the base and move away from each other, the first connecting member rotates with the first rotating arm relative to the base, and the first connecting member slides to the second position relative to the first rotating arm in a direction close to the base, the first connecting arm rotates relative to the base and the first connecting member, the second connecting member rotates with the second rotating arm relative to the base, and the second connecting member slides to the fourth position relative to the second rotating arm in a direction close to the base, and the second connecting arm rotates relative to the base and the second connecting member.

2. The folding device according to claim 1, characterized in that: The first holding structure comprises a first clamping portion and two second clamping portions, one of the first clamping portion and the second clamping portion is arranged on the first rotating arm, and the other of the first clamping portion and the second clamping portion is arranged on the first connecting member, and the two second clamping portions are arranged at intervals along the direction in which the first connecting member slides relative to the first rotating arm, when the first connecting member slides relative to the first rotating arm to the first position, the first clamping portion is clamped and connected to the second clamping portion of the two second clamping portions that is far away from the base, and when the first connecting member slides relative to the first rotating arm to the second position, the first clamping portion is clamped and connected to the second clamping portion of the two second clamping portions that is close to the base; The second holding structure includes a third clamping portion and two fourth clamping portions, one of the third clamping portion and the fourth clamping portion is arranged on the second rotating arm, and the other of the third clamping portion and the fourth clamping portion is arranged on the second connecting member, and the two fourth clamping portions are arranged at intervals along the direction in which the second connecting member slides relative to the second rotating arm, and when the second connecting member slides to the third position relative to the second rotating arm, the third clamping portion is clamped and connected to the fourth clamping portion of the two fourth clamping portions away from the base, and when the second connecting member slides to the fourth position relative to the second rotating arm, the third clamping portion is clamped and connected to the fourth clamping portion of the two fourth clamping portions close to the base.

3. The folding device according to claim 2, characterized in that: The first holding structure further includes a first holding member and a first elastic member, the first holding member can be slidably disposed on the first connecting member, the first holding member is provided with the first clamping portion, the second clamping portion is disposed on the first rotating arm, the first elastic member is disposed between the first holding member and the first connecting member, and the first elastic member is used to provide an elastic force to enable the first clamping portion to be clamped and connected to the second clamping portion when the first connecting member slides relative to the first rotating arm to the first position or the second position; The second holding structure also includes a second holding member and a second elastic member. The second holding member can be slidably disposed on the second connecting member. The second holding member is provided with the third clamping portion. The fourth clamping portion is disposed on the second rotating arm. The second elastic member is disposed between the second holding member and the second connecting member. The second elastic member is used to provide an elastic force to enable the third clamping portion to be clamped and connected to the fourth clamping portion when the second connecting member slides to the third position or the fourth position relative to the second rotating arm.

4. The folding device according to claim 3, characterized in that: The first connecting member is provided with a first guide post, the first holding member is provided with a second guide post, the second guide post is arranged toward the first guide post, and the two ends of the first elastic member are respectively sleeved on the first guide post and the second guide post; The second connecting member is provided with a third guide post, the second holding member is provided with a fourth guide post, the fourth guide post is arranged toward the third guide post, and two ends of the second elastic member are respectively sleeved on the third guide post and the fourth guide post.

5. The folding device according to claim 3, characterized in that: The first connecting member is provided with a first sliding groove and a first mounting groove which are connected to each other, the first rotating arm is slidably connected to the first sliding groove, the first holding member is slidably arranged in the first mounting groove, one end of the first elastic member is connected to a side of the first mounting groove facing the first sliding groove, and the other end of the first elastic member is connected to a side of the first holding member facing away from the first sliding groove; The second connecting member is provided with a second sliding groove and a second mounting groove which are interconnected. The second rotating arm is slidably connected to the second sliding groove. The second retaining member can be slidably disposed in the second mounting groove. One end of the second elastic member is connected to a side of the second mounting groove facing the second sliding groove, and the other end of the second elastic member is connected to a side of the second retaining member facing away from the first sliding groove.

6. The folding device according to any one of claims 1 to 4, characterized in that: The folding device also includes a first support plate and a second support plate, the first support plate being movably connected to the first connecting member and the first connecting arm, and when the first connecting arm rotates relative to the first connecting member and the base, the first support plate moves relative to the first connecting member and the first connecting arm to change the angle between the first support plate and the first connecting member, and the second support plate being movably connected to the second connecting member and the second connecting arm, and when the second connecting arm rotates relative to the second connecting member and the base, the second support plate moves relative to the second connecting member and the second connecting arm to change the angle between the second support plate and the second connecting member.

7. The folding device according to claim 6, characterized in that: The first connecting member has a first surface, the first surface is provided with a first mounting groove, the first retaining structure is at least partially located in the first mounting groove, and the first supporting plate is located on one side of the first surface on the first connecting member and covers the first mounting groove; The second connecting member has a second surface, the second surface is provided with a second mounting groove, the first retaining structure is at least partially located in the second mounting groove, and the second supporting plate is located on one side of the second surface on the second connecting member and covers the second mounting groove.

8. The folding device according to claim 6, characterized in that: The first connecting member has a first inclined surface, the first supporting plate has a first limiting surface, the second connecting member has a second inclined surface, and the second supporting plate has a second limiting surface. When the first connecting arm and the second connecting arm rotate relative to the base and approach each other, the first limiting surface is used to abut against the first inclined surface to limit the angle between the first supporting plate and the first connecting member, and the second limiting surface abuts against the second inclined surface to limit the angle between the second supporting plate and the second connecting member.

9. The folding device according to claim 8, characterized in that: The first support plate is rotatably connected to one of the first connecting member and the first connecting arm, and is connected to the other of the two in an arcuate sliding manner. The second support plate is rotatably connected to one of the second connecting member and the second connecting arm, and is connected to the other of the two in an arcuate sliding manner.

10. The folding device according to any one of claims 1 to 5, characterized in that: The rotation axis of the first rotating arm relative to the base and the rotation axis of the first connecting arm relative to the base are parallel to each other and do not overlap; A rotation axis of the second rotating arm relative to the base and a rotation axis of the second connecting arm relative to the base are parallel to each other and do not overlap.

11. A display screen assembly, characterized in that: It includes a flexible screen and a folding device as described in any one of claims 1 to 10, wherein the first connecting member and the second connecting member are both connected to the non-display surface of the flexible screen, when the first rotating arm and the second rotating arm rotate relative to the base and approach each other, the first connecting member and the second connecting member drive the flexible screen to fold the flexible screen, and when the first rotating arm and the second rotating arm rotate relative to the base and move away from each other, the first connecting member and the second connecting member drive the flexible screen to unfold the flexible screen.

12. An intelligent terminal device, characterized in that: Comprising the display screen assembly as claimed in claim 11.

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