CN114810803A

CN114810803A - Rotating shaft mechanism and folding display device

Info

Publication number: CN114810803A
Application number: CN202210482199.0A
Authority: CN
Inventors: 谢永球
Original assignee: Huizhou TCL Mobile Communication Co Ltd
Current assignee: Huizhou TCL Mobile Communication Co Ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-07-29

Abstract

The application discloses a rotating shaft mechanism and a folding display device, wherein the rotating shaft mechanism comprises a fixed support, two overturning assemblies and a damping structure; the overturning assembly comprises a first rotating plate, a second rotating plate and a third rotating plate; one end of the first rotating plate is rotatably connected with the fixed support; the second rotating plate is rotatably connected with the first rotating plate; the third rotor plate is arranged on one side of the second rotor plate, the damping structure comprises two positioning shafts which are rotatably connected with the fixed support, the third rotor plate is fixedly connected with one of the positioning shafts, the third rotor plate is provided with a sliding groove, one side of the second rotor plate, which is close to the third rotor plate, is connected with a sliding shaft, the sliding shaft is inserted into the sliding groove, and the third rotor plate is slidably connected with the second rotor plate through the sliding shaft. According to the embodiment of the application, the flexible screen can be prevented from generating creases when being folded, and the display effect of the folding display device is guaranteed.

Description

Rotating shaft mechanism and folding display device

Technical Field

The application belongs to the electronic equipment field, especially relates to a pivot structure and folding display device.

Background

Flexible collapsible display device is more and more favored by market, and flexible screen cell-phone is the cell-phone that adopts flexible, the good screen of pliability, compares in traditional screen, and flexible screen advantage is obvious, not only provides brand-new result of use for the user, and is more small and exquisite in the volume moreover, and the consumption is lower, and the screen has the pliability simultaneously, reduces the cracked risk of screen. The folding hinge is an important component for realizing the folding characteristic of the flexible display device, and plays an important role in screen protection, folding synchronization and the like.

In the existing folding hinge, the mobile phone is U-shaped after being folded, the bending radius of the folding position of the flexible screen is small, and the folding position of the flexible screen is easy to produce creases, so that the display effect of the mobile phone with the flexible screen is influenced.

Disclosure of Invention

The embodiment of the application provides a pivot mechanism and folding display device to avoid the flexible screen to produce the crease when folding, guarantee folding display device's display effect.

In a first aspect, an embodiment of the present application provides a spindle mechanism, including

Fixing a support;

the two overturning assemblies are respectively connected to two opposite sides of the fixed support in a rotating manner, and can be switched between a folded state and an unfolded state in a rotating manner; and

the damping structure is connected with the two overturning components and is used for realizing the rotating suspension of the two overturning components;

wherein, the upset subassembly includes:

one end of the first rotating plate is rotatably connected with the fixed support;

the second rotating plate is rotatably connected with the first rotating plate; and

the third rotor plate is arranged on one side of the second rotor plate, the damping structure comprises two positioning shafts which are connected with the fixed support in a rotating mode, the third rotor plate is fixedly connected with one of the positioning shafts, a sliding groove is formed in the third rotor plate, one side, close to the third rotor plate, of the second rotor plate is connected with a sliding shaft, the sliding shaft is inserted into the sliding groove, and the third rotor plate is connected with the second rotor plate in a sliding mode.

Optionally, the first rotating plate includes a first plate body, and a first rotating portion and a second rotating portion connected to two opposite sides of the first plate body, the first rotating portion is rotatably connected to the fixing support, the second rotating portion is connected to a first rotating shaft, the second rotating plate is provided with a first rotating groove, and the second rotating portion is inserted into the first rotating groove and is rotatably connected to the first rotating groove through the first rotating shaft.

Optionally, the second rotating plate includes a second plate body and a third plate body connected to the second plate body, the second plate body is adjacent to one side of the second rotating portion departing from the first rotating portion, and the third plate body is adjacent to one side of the second rotating portion departing from the second plate body.

Optionally, the second rotating portion includes a first limiting wall and a second limiting wall which are opposite to each other, and a first rotating wall connected to the first limiting wall and the second limiting wall, and the first rotating wall is an arc surface; the first rotating groove comprises a first groove wall and a second groove wall which are opposite to each other, and a first groove bottom connected with the first groove wall and the second groove wall, the first groove bottom is an arc surface, and the second rotating part and the first rotating groove are in rotating fit through the first rotating wall and the first groove bottom;

when the two overturning assemblies are in the unfolding state, the first limiting wall is adjacent to the first groove wall so as to limit the first groove wall to rotate towards the direction close to the first limiting wall; and first avoidance spaces are formed between the second limiting wall and the second groove wall at intervals, so that the second groove wall can rotate towards the direction close to the second limiting wall.

Optionally, one side of the third plate body facing the first plate body is provided with a first surface, one side of the first plate body facing the third plate body is provided with a second surface, and when the turnover assembly is in the unfolding state, the first surface and the second surface are formed with a second avoidance space at an interval for the third plate body to face and approach the first plate body to rotate.

Optionally, the fixed support is provided with a second rotating groove, the first rotating portion is inserted into the second rotating groove, an arc-shaped boss is arranged on the groove wall of the second rotating groove, the first rotating portion is provided with a limiting groove for inserting the arc-shaped boss, and the arc-shaped boss is inserted into the limiting groove.

Optionally, the third rotating plate is adjacent to the second rotating plate, the third rotating plate comprises a fourth plate body and a third rotating portion connected with the fourth plate body, the third rotating portion is connected with the positioning shaft, a protruding portion is convexly arranged on one side of the fourth plate body, and the sliding groove is formed in the protruding portion.

Optionally, the damping structure includes two damping assemblies disposed oppositely, and the two damping assemblies are respectively connected to the third rotating plates corresponding to the two turnover assemblies;

the damping assembly includes:

the fixing plate is arranged on one side of the fixing support and provided with a first through hole, and the positioning shaft penetrates through the first through hole and is rotatably connected with the fixing support;

the movable plate is arranged between the fixed plate and the fixed support and movably connected with the positioning shaft, the movable plate can slide along the axial direction of the positioning shaft, a first cam part is convexly arranged on one side of the movable plate, which faces the third rotating plate, and a second cam part is arranged on one side of the third rotating plate, which faces the movable plate; and

the spring is sleeved on the positioning shaft, two ends of the spring are respectively connected with the movable plate and the fixed plate, and the spring is used for providing spring force to enable the first cam part and the second cam part to be abutted and matched.

Optionally, the rotating shaft mechanism further comprises a synchronizing assembly, and the synchronizing assembly is connected with the two overturning assemblies to realize synchronous rotation of the two overturning assemblies.

In a second aspect, an embodiment of the present application further provides a foldable display device, including:

two housings;

the rotating shaft mechanism is the rotating shaft mechanism in any one of the embodiments, and is connected between the two machine shells; and

the flexible screen covers the two machine shells and the rotating shaft mechanism;

the two turnover assemblies of the rotating shaft mechanism are respectively connected with the two casings so as to drive the two casings to rotate and switch between a folded state and an unfolded state.

This application is through rotating first rotor plate and fixed support to be connected, and rotate first rotor plate and second rotor plate to be connected, in folding display device folding process, the casing drives the second rotor plate and rotates, the second rotor plate drives first rotor plate simultaneously and rotates, make two casings can rotate to fold completely state, when two casings rotate to fold completely state, form the space that holds flexible screen between the first rotor plate that two upset subassemblies correspond separately, make flexible screen not bend with the fixed part nature of pivot mechanism bonding, this part folding cross-section is "water droplet" form, the angle of bending is big, be difficult to produce the crease, can not influence the display effect of flexible screen, can fold for a long time and use.

Drawings

The technical solutions and advantages of the present application will become apparent from the following detailed description of specific embodiments of the present application when taken in conjunction with the accompanying drawings.

Fig. 1 is a schematic structural diagram of a foldable display device in an unfolded state according to an embodiment of the present disclosure.

Fig. 2 is a schematic structural diagram of a foldable display device provided in an embodiment of the present application in a fully folded state.

Fig. 3 is a schematic view of a portion of the foldable display device of fig. 1 with the flexible screen removed.

Fig. 4 is a schematic structural view of the hinge mechanism and the cover in fig. 3.

Fig. 5 is a schematic structural diagram of the rotating shaft mechanism in fig. 3.

Fig. 6 is a schematic structural view of the hinge mechanism in fig. 5 from another perspective.

Fig. 7 is a structural schematic diagram of the rotating shaft mechanism in a completely folded state.

Fig. 8 is a sectional view of a foldable display apparatus according to an embodiment of the present application in a fully folded state.

Fig. 9 is an exploded view of the flip assembly and the fixed mount of the spindle mechanism.

Fig. 10 is a sectional view of the spindle mechanism of fig. 5.

Fig. 11 is a partial enlarged view of a portion a in fig. 8.

Fig. 12 is an exploded view of a damping structure.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides a folding display device.

Referring to fig. 1 to fig. 3 in combination, fig. 1 is a schematic structural diagram of a foldable display device in an unfolded state according to an embodiment of the present disclosure, and fig. 2 is a schematic structural diagram of a foldable display device in a fully folded state according to an embodiment of the present disclosure; fig. 3 is a schematic structural diagram of a portion of a foldable display device according to an embodiment of the present application, with a flexible screen removed.

In the embodiment of the present application, the folding display device 100 includes two housings 10, a hinge mechanism 20 connected between the two housings 10, and a flexible screen 30 covering the two housings 10 and the hinge mechanism 20, wherein the two housings 10 are rotatable by the hinge mechanism 20 to rotatably switch the two housings between a folded state and an unfolded state.

It should be noted that the flexible screen 30 includes a first portion covering the two housings 10 and a second portion covering the rotating shaft mechanism 20, wherein the two first portions of the flexible screen 30 are respectively fixed to the two housings 10 by adhesive, and the second portion of the flexible screen 30 directly covers the surface of the rotating shaft mechanism 20 (without being fixed by adhesive), so that the second portion of the flexible screen 30 is naturally bent during the folding process, and the display effect of the flexible screen 30 is prevented from being affected by damage to the internal component structure of the second portion of the flexible screen 30.

Referring to fig. 3, fig. 3 is a partial structural schematic view of the foldable display device 100 with the flexible screen 30 removed, when the foldable display device 100 is in the unfolded state, the surface of the two housings 10 for being fixed by gluing with the first portion and the surface of the rotating shaft mechanism 20 for being covered by the second portion are coplanar, so that the flexible screen 30 is entirely planar when the flexible screen 30 is glued on the housings 10.

It should be noted that, in one foldable display device 100, the specific number of the rotating shaft mechanisms 20 is determined according to the specific size of the foldable display device 100, and the number of the rotating shaft mechanisms 20 may be one, or two or more, and the rotating shaft mechanisms 20 are illustrated as two in the drawings of the embodiment of the present application, but should not be construed as limiting the present application.

It can be understood that the rotating shaft mechanism 20 is an important component of the foldable display device 100 for realizing the rotation switching between the folded state and the unfolded state, and the folding effect of the foldable display device 100 is closely related to the structural design of the rotating shaft mechanism 20.

In the related technology, the rotating shaft structure design of most of folding display equipment on the market at present is relatively original, the folding display equipment is in a U shape when in a folding state, the bending angle of the bending part of the flexible screen is relatively small, the flexible screen is extruded to generate creases, the display effect of the flexible screen is influenced, and the flexible screen is easy to damage due to long-term folding use, so that the flexible screen cannot normally display; moreover, folding display device is folding and can't laminate between two casings when being "U" style of calligraphy, has the gap between two casings promptly, influences folding display device's outward appearance effect.

To solve the above problem, the present embodiment further provides a new spindle mechanism 20, please refer to fig. 3, fig. 4 and fig. 5 in combination, in the present embodiment, the spindle mechanism 20 includes a fixed support 21, two flip assemblies 22 and a damping structure 23; wherein, two upset subassemblies 22 rotate respectively and connect in the relative both sides of fixing support 21, and damping structure 23 is connected with two upset subassemblies 22, and damping structure 23 is used for realizing the rotation of two upset subassemblies 22 and hovers.

The two turning assemblies 22 are further fixedly connected to the two housings 10, respectively, and when the two turning assemblies 22 rotate relative to the fixed support 21, the two turning assemblies 22 drive the two housings 10 to rotate, respectively, so that the two housings 10 are rotated and switched between the folded state and the unfolded state.

Referring to fig. 5, 6 and 7, the flipping unit 22 includes a first rotating plate 24, a second rotating plate 25 and a third rotating plate 26; one end of the first rotating plate 24 is rotatably connected with the fixed support 21; the second rotating plate 25 is rotatably connected to the first rotating plate 24; the third rotating plate 26 is disposed on one side of the second rotating plate 25, the damping structure 23 includes two positioning shafts 232 rotatably connected to the fixing support 21, the third rotating plate 26 is fixedly connected to one of the positioning shafts 232, the third rotating plate 26 is provided with a sliding slot 263, one side of the second rotating plate 25 close to the third rotating plate 26 is connected to a sliding shaft 253, the sliding shaft 253 is inserted into the sliding slot 263, and the third rotating plate 26 is slidably connected to the second rotating plate 25 through the sliding shaft 253.

It is understood that, in order to support and fix the fixing support 21, the foldable display device 100 further includes a cover 40, as shown in fig. 4, the fixing support 21 is fixedly installed in the cover 40; meanwhile, the cover 40 also serves as an isolation function for isolating the rotation shaft mechanism 20 from the outside to prevent dust and moisture from entering the casing 10 through the rotation shaft mechanism 20.

Specifically, when the housing 10 is folded under the action of an external force, the housing 10 drives the second rotating plate 25 to move, the second rotating plate 25 rotates relative to the first rotating plate 24 and drives the first rotating plate 24 to rotate relative to the fixed support 21, and meanwhile, during the rotation of the first rotating plate 24, the sliding shaft 253 rotates along the second rotating plate 25, and the sliding shaft 253 slides along the sliding groove 263 and applies an acting force to the sliding groove 263, so as to drive the third rotating plate 26 to rotate.

Referring to fig. 8, when the two housings 10 are rotated to the fully folded state, a space for accommodating the flexible screen 30 is formed between the first rotating plates 24 corresponding to the two turnover units 22, so that the portion of the flexible screen 30 not bonded to the rotating shaft mechanism 20 (i.e. the second portion) is bent naturally, and the folded section of the portion is "water drop".

It will be appreciated that the damping structure 23 is coupled to the third rotating plate 26 via the positioning shaft 232, and the damping structure 23 is configured to apply a resistance force to the third rotating plate 26 to resist rotation of the third rotating plate 26. When the external force applied to the housing 10 is removed when the housing 10 is rotated to a certain folding angle, the damping structure 23 applies a resistance to the third rotating plate 26 to prevent the third rotating plate 26 from rotating, so as to limit the sliding shaft 253 from sliding along the sliding groove 263, thereby preventing the second rotating plate 25 from rotating, and further preventing the first rotating plate 24 from rotating relative to the fixed support 21, that is, the rotating and hovering of the flip assembly 22 is realized, so that the housing 10 is maintained at a certain folding angle.

In the rotating shaft mechanism of the embodiment of the application, the first rotating plate 24 is rotatably connected with the fixed support 21, and the first rotating plate 24 is rotatably connected with the second rotating plate 25, in the folding process of the folding display device 100, the casing 10 drives the second rotating plate 25 to rotate, and meanwhile, the second rotating plate 25 drives the first rotating plate 24 to rotate, so that the two casings 10 can rotate to a completely folded state, when the two casings 10 rotate to the completely folded state, a space for accommodating the flexible screen 30 is formed between the first rotating plates 24 corresponding to the two turnover assemblies 22, and a part (namely the second part) of the flexible screen 30, which is not fixedly bonded with the rotating shaft mechanism 20, is naturally bent, the folding section of the part is in a water drop shape, the bending angle is large, the crease is not easy to generate, the display effect of the flexible screen 30 cannot be influenced, and the flexible screen can be folded for a long time.

Referring to fig. 5, 9 and 10, the first rotating plate 24 includes a first plate 242, and a first rotating portion 241 and a second rotating portion 243 connected to two opposite sides of the first plate 242, the first rotating portion 241 is rotatably connected to the fixed support 21, the second rotating portion 243 is connected to the first rotating shaft 27, the second rotating plate 25 is provided with a first rotating groove 254, and the second rotating portion 243 is inserted into the first rotating groove 254 and is rotatably connected to the first rotating groove 254 through the first rotating shaft 27.

Specifically, the second rotating portion 243 is provided with a first shaft hole penetrating through itself, two groove walls of the first rotating groove 254 along the rotating axis direction are provided with second shaft holes, the first rotating shaft 27 is sequentially installed through the second shaft hole and the first shaft hole, so as to realize the rotating connection of the first rotating portion 241 and the first rotating groove 254, and the second rotating plate 25 can rotate around the first rotating shaft 27 and rotate relative to the first rotating plate 24.

Referring to fig. 9 and 10, in the embodiment of the present application, the second rotating plate 25 includes a second plate 251 and a third plate 252 connected to the second plate 251, the second plate 251 is adjacent to a side of the second rotating portion 243 away from the first rotating portion 241, and the third plate 252 is adjacent to a side of the second rotating portion 243 away from the second plate 251.

It can be understood that, in the embodiment of the present application, the second plate 251 is adjoined to the side of the second rotating portion 243 away from the first rotating portion 241, and the third plate 252 is adjoined to the side of the second rotating portion 243 away from the second plate 251, that is, the second rotating plate 25 is partially located at the side of the first rotating plate 24 away from the flexible screen 30, instead of being directly connected to the side of the first rotating plate 24 away from the first rotating portion 241, so that the length of the flipping unit 22 extending out of the fixed support 21 can be reduced, thereby reducing the overall width of the rotating shaft mechanism 20 in the unfolded state, avoiding the rotating shaft mechanism 20 occupying too much space inside the casing 10 to cause the congestion of the space inside the casing 10, and avoiding affecting the installation and arrangement of the electronic components inside the casing 10.

Specifically, as shown in fig. 10, to implement that the second plate 251 is adjacent to the side of the second rotating portion 243 departing from the first rotating portion 241, and at the same time, to make the third plate 252 be adjacent to the side of the second rotating portion 243 departing from the second plate 251 (i.e., the third plate 252 is located at the side of the first plate 242 departing from the flexible screen 30), the surface of the second plate 251 facing the flexible screen 30 is higher than the surface of the third plate 252 facing the flexible screen 30 along the orthographic projection direction of the second rotating plate 25 on the flexible screen 30.

Referring to fig. 10 and 11 in combination, in the embodiment of the present application, the second rotating portion 243 includes a first limiting wall 244 and a second limiting wall 245 which are opposite to each other, and a first rotating wall 246 connected to the first limiting wall 244 and the second limiting wall 245, and the first rotating wall 246 is a circular arc surface; the first rotating groove 254 comprises a first groove wall 255 and a second groove wall 256 which are opposite to each other, and a first groove bottom 257 connected with the first groove wall 255 and the second groove wall 256, the first groove bottom 257 is an arc surface, and the second rotating part 243 and the first rotating groove 254 are in rotating fit through the first rotating wall 246 and the first groove bottom 257; when the two turning assemblies 22 are in the unfolded state, the first limiting wall 244 abuts against the first groove wall 255 to limit the first groove wall 255 to rotate towards the direction close to the first limiting wall 244; the second limiting wall 245 and the second groove wall 256 form a first avoidance space at an interval, so that the second groove wall 256 can rotate in a direction approaching the second limiting wall 245.

It can be understood that, taking fig. 10 as an example, fig. 10 is a cross-sectional view of the rotating shaft mechanism 20 along a direction perpendicular to the axial direction of the rotating shaft, and for the flip assembly 22 on the left side in the figure, by designing the first rotating portion 241 and the first rotating groove 254 as the above-mentioned structure, the first limiting wall 244 blocks the first groove wall 255 from rotating toward a direction close to the first limiting wall 244 during the folding movement of the foldable display device 100; since the first avoiding space is formed between the second limiting wall 245 and the second groove wall 256, the second groove wall 256 can rotate toward the direction close to the second limiting wall 245, that is, the second rotating plate 25 can only rotate around the first rotating shaft 27 counterclockwise but cannot rotate around the first rotating shaft 27 clockwise, when the second rotating plate 25 rotates until the second groove wall 256 abuts against the second limiting wall 245, the second rotating plate 25 cannot rotate continuously, and at this time, the foldable display device 100 is just switched to the fully folded state (as shown in fig. 11).

Specifically, as shown in fig. 10, in the embodiment of the present application, when the two flipping elements 22 are in the unfolded state, the second groove wall 256 is an inclined surface, and the second groove wall 256 forms a first included angle with respect to the second limiting wall 245, so that the second groove wall 256 and the second limiting wall 245 are spaced to form the first avoidance space.

Since the second rotating plate 25 is partially located on the side of the first rotating plate 24 away from the flexible screen 30 (i.e. the third plate 252 is located on the lower side of the first plate 242), i.e. the first rotating plate 24 is located on the rotating path of the second rotating plate 25, in order to prevent the first rotating plate 24 from obstructing the rotation of the second rotating plate 25 relative to the first rotating plate 24, in the embodiment of the present application, with continued reference to fig. 10, the side of the third rotating plate 252 facing the first plate 242 has a first surface 242a, and the side of the first plate 242 facing the third plate 252 has a second surface 252a, when the two flipping elements 22 are in the unfolded state, the first surface 242a and the second surface 252a are spaced to form a second escape space for the third plate 252 to rotate towards the side close to the first plate 242.

It can be understood that the first rotating plate 24 is prevented from obstructing the rotation of the second rotating plate 25 by disposing the first surface 242a and the second surface 252a at an interval and forming a second escape space for the third plate 252 to rotate toward the first plate 242, that is, the first rotating plate 24 is formed with a second escape space on the rotating path of the second rotating plate 25.

Specifically, as shown in fig. 10, when the flipping elements 22 are in the unfolded state, the second surface 252a is a slope, and the second surface 252a forms a second angle with respect to the first surface 242a, so as to form the second avoiding space. It should be noted that the second included angle is greater than or equal to the first included angle, so that the second rotating plate 25 can rotate in place.

Preferably, in the embodiment of the present application, the second included angle is equal to the first included angle, and when the second rotating plate 25 rotates until the second groove wall 256 abuts against the second limiting wall 245, the first surface 242a abuts against the second surface 252 a.

Referring to fig. 9, in the embodiment of the present application, the fixing support 21 is provided with a second rotating groove 211, the first rotating portion 241 is inserted into the second rotating groove 211, a groove wall of the second rotating groove 211 is provided with an arc-shaped boss 212, the first rotating portion 241 is provided with a limiting groove 247 into which the arc-shaped boss 212 is inserted, and the arc-shaped boss 212 is inserted into the limiting groove 247.

As shown in fig. 9, the second rotating groove 211 has a second groove bottom, the second groove bottom is an arc surface, the first rotating portion 241 has a second rotating wall rotationally engaged with the second groove bottom, the second rotating wall is also an arc surface, and the axis of the second rotating wall coincides with the axis of the second groove bottom, so that the first rotating portion 241 and the second rotating groove 211 are rotationally engaged with the second groove bottom through the second rotating wall.

It can be understood that, by providing the arc-shaped boss 212 on the groove wall of the second rotating groove 211 and providing the first rotating portion 241 with the limiting groove 247 for the arc-shaped boss 212 to be inserted, the arc-shaped boss 212 is used for limiting the rotation of the first rotating portion 241, so that the first rotating portion 241 rotates around the arc-shaped boss 212 in the second rotating groove 211, the first rotating portion 241 is prevented from being separated from the second rotating groove 211, and the stability of the rotation of the turnover assembly 22 is ensured.

Referring to fig. 5 and 6, in the embodiment of the present application, the third rotating plate 26 is adjacent to the second rotating plate 25, the third rotating plate 26 includes a fourth plate body 261 and a third rotating portion 262 connected to the fourth plate body 261, the third rotating portion 262 is connected to the positioning shaft 232, a protruding portion 264 is protruded on one side of the fourth plate body 261, and the sliding groove 263 is disposed on the protruding portion 264.

Referring to fig. 5 and 12 in combination, in the embodiment of the present application, the damping structure 23 includes two damping assemblies oppositely disposed, and the two damping assemblies are respectively connected to the third rotating plates 26 corresponding to the two turning assemblies 22; the damping assembly includes a fixed plate 231, a movable plate 233, and a spring 234; the fixing plate 231 is arranged on one side of the fixing support 21, the fixing plate 231 is provided with a through hole, and the positioning shaft 232 penetrates through the through hole and is rotatably connected with the fixing support 21; the movable plate 233 is disposed between the fixed plate 231 and the fixed support 21, the movable plate 233 is movably connected to the positioning shaft 232, the movable plate 233 is axially slidable along the positioning shaft 232, a first cam portion 235 is convexly disposed on one side of the movable plate 233 facing the third rotating plate 26, and a second cam portion 265 is disposed on one side of the third rotating plate 26 facing the movable plate 233; the spring 234 is sleeved on the positioning shaft 232, and two ends of the spring 234 are respectively connected with the movable plate 233 and the fixed plate 231, and the spring 234 is used for providing a force of the spring 234 to enable the first cam portion 235 to be in abutting fit with the second cam portion 265.

In order to simplify the overall structure of the damping structure 23 and facilitate the installation of the damping structure 23, in the embodiment of the present application, the two damping assemblies share one fixed plate 231 and one movable plate 233, two first via holes are arranged on the fixed plate 231, the two first via holes are arranged at intervals, and the two positioning shafts 232 correspondingly penetrate through the two first via holes; two second through holes are formed in the movable plate 233, the positions of the two second through holes correspond to the positions of the two first through holes one by one, and the two positioning shafts 232 correspondingly penetrate through the two second through holes so that the movable plate 233 is movably connected with the positioning shafts 232; the movable plate 233 is provided with two cam portions corresponding to the positions of the two second through holes one by one, wherein the cam portions are conventional in the art, and the specific shape of the cam portions is not described in detail herein.

Specifically, during the process of folding the two housings 10 by external force, the housing 10 drives the second rotating plate 25 to rotate, the second rotating plate 25 drives the third rotating plate 26 to rotate, the second cam portion 265 rotates along with the third rotating portion 262, because the second cam portion 265 is in abutting fit with the first cam portion 235 and the second cam portion 265 cannot rotate, a force is generated at the contact portion with the first cam portion 235 when the second cam portion 265 rotates, because the contact portion is an arc surface (or an inclined surface), the force is decomposed into a first component force along the axial direction of the positioning shaft 232 and a second component force along the radial direction of the positioning shaft 232, the first component force along the axial direction of the positioning shaft 232 can push the first cam portion 235 to move axially along the positioning shaft 232, and when the acting direction of the first component force is toward a direction away from the third rotating plate 26, the second cam portion 265 pushes the movable plate 233 to move axially away from the third rotating plate 26 along the positioning shaft 232, when the distance between the movable plate 233 and the fixed plate 231 is decreased, the spring 234 is compressed by the pressing of the movable plate 233 and the fixed plate 231, and at this time, the spring 234 applies a spring 234 force to the movable plate 233, and the first cam portion 235 abuts against the second cam portion 265 under the force of the spring 234 force, so that a resistance force for preventing the third rotating plate 26 from rotating is generated, and when the housing 10 is continuously driven by an external force, the resistance force is smaller than the external force for driving the housing 10 to fold and rotate, so that the third rotating plate 26 can still rotate; when the external force for driving the folding motion of the housing 10 is removed, the third rotating plate 26 stops rotating under the resistance, so as to prevent the second rotating plate 25 from further rotating, and the corresponding first rotating plate 24 also stops rotating, so as to realize the rotating suspension of the flip assembly 22, thereby maintaining the folding display device 100 at a certain folding angle.

It should be noted that the specific folding angle range for the foldable display device 100 to achieve the rotary hovering is determined according to the specific structural shapes of the first cam portion 235 and the second cam portion 265.

In order to realize the synchronous folding of the two housings 10, so as to save the user's labor when folding, in the embodiment of the present application, the rotating shaft mechanism 20 further includes a synchronizing component 29, and the synchronizing component 29 is connected with the two turning components 22, so as to realize the synchronous rotation of the two turning components 22.

Specifically, in the embodiment of the present application, the synchronizing assembly 29 adopts a gear synchronizing structure, and referring to fig. 5, the synchronizing assembly 29 includes a first gear 291, a second gear 292, a third gear 293, and a fourth gear 294; the first gear 291 and the second gear 292 are respectively connected with the positioning shafts 232 corresponding to the two damping components; a third gear 293 and a fourth gear 294 are disposed between the first gear 291 and the second gear 292, the third gear 293 and the fourth gear 294 are engaged with each other and rotatably connected with the fixed support 21, the third gear 293 is engaged with the first gear 291, and the fourth gear 294 is engaged with the second gear 292.

Specifically, taking fig. 5 as an example, in the process that one of the housings 10 is subjected to an external force to rotate relative to the other housing 10, the housing 10 drives the second rotating plate 25 corresponding thereto, the second rotating plate 25 drives the first rotating plate 24 rotationally connected thereto to rotate, at the same time, the second rotating plate 25 also drives the third rotating plate 26 corresponding thereto to rotate via the first sliding shaft 253, the third rotating plate 26 drives the positioning shaft 232 to rotate, and further drives the first gear 291 to rotate (clockwise), the first gear 291 is meshed with the third gear 293, the first gear 291 drives the third gear 293 to synchronously rotate in the opposite direction (counterclockwise), the third gear 293 is meshed with the fourth gear 294, the third gear 293 drives the fourth gear 294 to synchronously rotate in the opposite direction (clockwise), the fourth gear 294 is meshed with the second gear 292, the fourth gear 294 drives the second gear 292 to synchronously rotate in the opposite direction (counterclockwise), thereby drive another damping component's location axle 232 and rotate, and then drive another upset subassembly 22 and rotate, drive another casing 10 and rotate promptly, so, two upset subassemblies 22 realize synchronous rotation through synchronization component 29 to make two casings 10 fold in step, make the user more laborsaving when folding.

The embodiment of the present application provides a rotating shaft mechanism 20 and a foldable display device 100 using the rotating shaft mechanism 20, in the rotating shaft mechanism 20, by rotatably connecting a first rotating plate 24 with a fixed support 21, rotatably connecting the first rotating plate 24 with a second rotating plate 25, and fixedly connecting the second rotating plate 25 with a housing 10, during the folding process of the foldable display device 100, the housing 10 drives the second rotating plate 25 to rotate, and simultaneously the second rotating plate 25 drives the first rotating plate 24 to rotate, so that the two housings 10 can rotate to a fully folded state, when the two housings 10 rotate to the fully folded state, a space for accommodating a flexible screen 30 is formed between the respective first rotating plates 24 of the two turnover assemblies 22, so that a portion (i.e. the above second portion) where the flexible screen 30 is not adhesively fixed with the rotating shaft mechanism 20 is naturally bent, and the section of the portion is in a "water drop" shape, the bending angle is large, the folding line is not easy to generate, the display effect of the flexible screen 30 is not influenced, and the flexible screen can be folded for long time.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The hinge mechanism and the foldable display device provided in the embodiments of the present application are described in detail above, and the principles and embodiments of the present application are explained herein by applying specific examples, and the above description of the embodiments is only used to help understand the method and core ideas of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A spindle mechanism, comprising:

a fixed support;

the damping structure is connected with the two overturning components and is used for realizing the rotary hovering of the two overturning components;

wherein, the upset subassembly includes:

2. The hinge mechanism according to claim 1, wherein the first rotating plate comprises a first plate body, and a first rotating portion and a second rotating portion connected to opposite sides of the first plate body, the first rotating portion being rotatably connected to the fixed support, the second rotating portion being connected to a first rotating shaft, the second rotating plate being provided with a first rotating groove, and the second rotating portion being inserted into the first rotating groove and being rotatably connected to the first rotating groove via the first rotating shaft.

3. The hinge mechanism according to claim 2, wherein the second rotating plate comprises a second plate and a third plate connected to the second plate, the second plate is adjacent to a side of the second rotating portion facing away from the first rotating portion, and the third plate is adjacent to a side of the second rotating portion facing away from the second plate.

4. The spindle mechanism according to claim 3, wherein the second rotating portion includes a first limiting wall and a second limiting wall which are opposite to each other, and a first rotating wall connected to the first limiting wall and the second limiting wall, and the first rotating wall is a circular arc surface; the first rotating groove comprises a first groove wall and a second groove wall which are opposite to each other, and a first groove bottom connected with the first groove wall and the second groove wall, the first groove bottom is an arc surface, and the second rotating part and the first rotating groove are in rotating fit through the first rotating wall and the first groove bottom;

5. The hinge mechanism as claimed in claim 4, wherein a side of the third plate facing the first plate has a first surface, a side of the first plate facing the third plate has a second surface, and when the two flipping elements are in the unfolded state, a second avoiding space is formed between the first surface and the second surface for allowing the third plate to rotate close to the first plate.

6. The hinge mechanism according to claim 2, wherein the fixing bracket has a second rotation groove, the first rotation portion is inserted into the second rotation groove, a wall of the second rotation groove has an arc-shaped protrusion, the first rotation portion has a limiting groove into which the arc-shaped protrusion is inserted, and the arc-shaped protrusion is inserted into the limiting groove.

7. The rotating shaft mechanism according to any one of claims 1 to 6, wherein the third rotating plate is adjacent to the second rotating plate, the third rotating plate includes a fourth plate body and a third rotating portion connected to the fourth plate body, the third rotating portion is connected to the positioning shaft, a protruding portion is protruded on one side of the fourth plate body, and the sliding groove is disposed in the protruding portion.

8. The spindle mechanism according to any one of claims 1 to 6, wherein the damping structure comprises two damping assemblies disposed opposite to each other, and the two damping assemblies are respectively connected to the third rotating plates corresponding to the two turnover assemblies;

the damping assembly includes:

the movable plate is arranged between the fixed plate and the fixed support and movably connected with the positioning shaft, the movable plate can slide along the axial direction of the positioning shaft, a first cam part is convexly arranged on one side of the movable plate facing the third rotating plate, and a second cam part is arranged on one side of the third rotating plate facing the movable plate; and

9. The spindle mechanism according to any one of claims 1 to 6, further comprising a synchronizing assembly, wherein the synchronizing assembly is connected to the two turnover assemblies to realize synchronous rotation of the two turnover assemblies.

10. A folding display device, comprising:

two housings;

a rotating shaft mechanism according to any one of claims 1 to 9, the rotating shaft mechanism being connected between the two housings; and